Explanation:
Sound travels in the form of a wave. Waves are characterized by three basic quantities. They are frequency, speed, and amplitude. Two of the main characteristics of sound are pitch and loudness, which in turn are determined by the frequency and amplitude of the wave, respectively.
Final answer:
Sound energy is a type of wave energy characterized by pitch, loudness, and tone. Pitch refers to the perceived frequency of a sound wave, loudness refers to the amplitude of the wave, and tone refers to the quality or timbre of the sound.
Explanation:
Sound energy is a type of wave energy that is created by vibrations and is transmitted through a medium such as air, water, or solid objects. It is characterized by several properties:
Pitch: The perceived frequency of a sound wave, which determines whether a sound is high or low.Loudness: The amplitude of a sound wave, which determines how soft or loud a sound is.Tone: The quality or timbre of a sound, which is determined by the combination of different frequencies present in the sound wave.For example, a high-pitched sound has a high frequency, while a low-pitched sound has a low frequency. Similarly, a loud sound has a large amplitude, while a soft sound has a small amplitude. The tone of a sound can vary depending on the specific combination of frequencies present.
____ON 6 _______ is a measure of the different types of organisms in a community. diversity population genetics none of the above
Diversity
measures individuals sex, race etc. helps to know each organism separately.
Name 2 limiting factors as depth increases in the benthic zone
Answer:
As depth increases in the benthic zone, there is a high pressure and limited light.
Explanation:
Benthic zone begins at the shoreline and extends downwards with the continental shelf. The benthic zone covers 70% of all earth. It can host ecosystems such as a coral reef and kelp forest. In some parts of the benthic zone, at a deeper water zone, there is high pressure, low temperature and low sunlight.
Pressure: As depth increases in the benthic zone, pressure also increases. High pressure in the zone makes a homogeneous environment and lack of oxygen develop anaerobic zone formation.
Light: In deep waters (between 200 and 1000 m), light is unable to penetrate to the lower level. Insufficient light leads toward a low photosynthesis rate which is the reason that food source comes from dead and decaying organisms drifting down from upper layers. This condition also leads to the formation of anaerobic conditions.
Two factors that limit life in the benthic zone as depth increases are the availability of light for photosynthesis and the increase in pressure.
Explanation:Two limiting factors associated with increased depth in the benthic zone include light availability and pressure. First, light availability decreases as depth increases, affecting the ability of organisms to carry out photosynthesis. This results in fewer plant species and a distinct shift in the types of organisms found in these deeper areas.
Secondly, the pressure increases significantly in the benthic zone as depth increases, which can affect the physiology of many organisms. It makes the survival hard for them.
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True Or False: All of an organism's cells has the exact same DNA Explain how you know this is true:
Answer: True.
Explanation:
All the organism cells read the same genetic blueprint. So they all have the exact same DNA.
True. All of an organism's cells have the exact same DNA.
What is DNA?The DNA in an organism is present within the nucleus of every cell and contains the genetic information necessary for the development, functioning, and reproduction of that organism. During the process of cell division, the DNA is replicated, and each daughter cell receives an identical copy of the parent cell's DNA.
This means that all cells in an organism, whether they are skin cells, muscle cells, or nerve cells, contain the same genetic information encoded in the DNA. However, not all genes in the DNA are actively expressed in every cell. Different cells express specific sets of genes that are relevant to their particular functions and characteristics. This process of gene regulation allows cells to differentiate and specialize into various cell types while still sharing the same DNA.
Exceptions to this general rule occur in certain cases such as somatic mutations, which can introduce changes in specific cells' DNA during an organism's lifetime. Additionally, some organisms, such as certain types of plants, may exhibit genomic mosaicism, where different cells contain distinct variations of the DNA due to somatic mutations or epigenetic modifications. However, on a fundamental level, the DNA sequence within an organism's cells is the same.
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Why is it commonly believed that carbon dioxide is responsible for global warming? Select 2 options. Carbon dioxide levels in the Earth’s atmosphere have been steadily decreasing. Carbon dioxide levels in the Earth’s atmosphere have been steadily increasing. Carbon has a longer average lifetime in the atmosphere. Carbon has a shorter average lifetime in the atmosphere. Other greenhouse gases amplify the effect of carbon dioxide.
Answer:
Option B and D are correct as the Carbon dioxide levels in the Earth’s atmosphere have been steadily increasing and other greenhouse gases amplify the effect of carbon dioxide.
Explanation:
As we all are aware that increasing rate of carbon dioxide is responsible for global warming. Scientists note that the average temperature on Earth is increasing over time. They believe that a contributing factor is the greenhouse effect.
This effect is caused by the formation of greenhouse gases, such as methane, water vapor, and carbon dioxide. Increasing the amount of greenhouse gases in the atmosphere is considered to be the cause of global warming and climate change. Water vapor, carbon dioxide, methane, nitrous oxide and ozone are main green house gases.
Carbon dioxide is steadily increasing in the atmosphere over hundreds of years and it has a longer life span than most of the gases.
Option B and C
Explanation:Carbon dioxide is the most prominent greenhouse gas of atmosphere. It is very much responsible for increasing the temperature of Earth's surface by capturing the long wave infrared lights emitted by Earth's surface.
Due to industrial revolution, various natural calamities and huge increase in population over the last few centuries, amount of carbon dioxide is increasing in atmosphere significantly. And the half life of carbon dioxide in atmosphere is around 200 years which is much more than other significant greenhouse gases. This leads to the significant contribution of carbon dioxide to greenhouse effect.
What are chloroplasts? What is chlorophyll a? What role does it play in photosynthesis?
Answer:
They implement oxygen carbon dioxide and sun light radiations.....choloroplat is the greeny clr in the leaves.
Explanation:
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Chloroplasts are specialized units in plant and algal cells responsible for photosynthesis, containing chlorophyll a for light capture.
Chloroplasts are organelles found in plant and algal cells with the distinctive role of conducting photosynthesis. They contain the green pigment chlorophyll a, which is essential for capturing light energy. The structure of chloroplasts, including their membranes and thylakoids, enhances the efficiency of photosynthesis. Thylakoids are stacked in grana to increase the surface area for light absorption. Membranes house components necessary for the electron transport chain and provide a compartmentalized environment for the chemical reactions of photosynthesis. During photosynthesis, chlorophyll a absorbs light energy and emits an electron, starting the process of an electron transport chain. Electron carriers, such as the molecules NADP+ and ATP, are then used to transport energy around the cell, particularly in the synthesis of organic molecules in the Calvin cycle. The electron transport chain is essential for converting light energy into chemical energy, stored in ATP and NADPH, used to produce sugars from carbon dioxide.
| WILL MARK AS BRAINLIST IF THE ANSWER IS CORRECT | True of False. When you go up a flight of stairs, you have the same amount of POWER whether you go up them fast or slow.
What are the three groups of animals in
Aristotle's classification system?
Land, Water and Air are the three sub-groups of animals in Aristotle's classification system. He also classified on basis of red blood cells and without red blood cells.
Explanation:Aristotle is very popular in ancient Greece and he is very popular in the field of biology and mathematics. He divided the living organisms into two classes called the Plants and the Animals. He divided the animals into two classes – one which contains red blood cells and the other which didn’t contain any red blood cells.
He also noticed that most of the organisms which contained red blood cells are vertebrates i.e they contained a body vertebral column in their back. So they were called as vertebrates and the others were called as invertebrates.
lifecycle of plasmodium in human host
Life cycle of plasmodium in human host consists of 7-10 days survival, causing infection and eradication after getting treatment.
Explanation:Plasmodium is the malaria parasite that causes malaria in humans. The parasite requires two hosts so the life cycle of the parasite includes vertebrates and insect hosts. The life cycle begins from a blood-feeding insect and then into a human host.
When a blood-feeding insect, say a female Anopheles mosquito, makes contact with a human body, it injects parasites in the form of 'sporozoites' into the body. This makes human the second host. The sporozoites then travel through the blood stream and enter lever where they first begin to multiply asexually. This continues for 7 to 10 days without any evidence of symptoms. Then they begin to multiply in red blood cells and continue until the cell bursts. 'Merozoites' are released after each cell break that continue the cycle of multiplication and infect the other red blood cells. Humans spike fever when parasites break free and enter bloodstream, showing the symptoms of Malaria.
the Plasma membrane forms a what between the inside and outside of the cell?
Plasma membrane forms a stable barrier.
Explanation:Cell membrane is a thin flexible membrane, it is present in every living cell.It is also known as plasma membrane or cytoplasmic membrane. This membrane is selectively permeable to organic molecules and ions. It is made up of proteins and lipidsThis membrane forms a stable barrier between two aqueous compartments i.e. to separate the inside of cells from the outside. Cell membrane separates the cytoplasm of the cell from the surroundings.Result: Plasma membrane act as a barrier to protect the cell content from the surroundings.
Final answer:
The plasma membrane acts as a selective barrier between a cell's cytoplasm and the external environment, strictly controlling what substances can enter or leave the cell, thereby maintaining homeostasis.
Explanation:
The plasma membrane, often referred to as the cell membrane, plays a critical role in cellular function. It forms a selective barrier between the internal cytoplasm and the external environment of the cell. As such, the plasma membrane enables the cell to maintain a stable internal environment, also known as homeostasis, by controlling what enters and exits the cell. This selective barrier features selective permeability, meaning it only allows certain substances to pass through while blocking others, maintaining the delicate balance necessary for the cell's survival.
Composed mainly of a bilayer of phospholipids along with proteins, cholesterol, and carbohydrates, the plasma membrane's structure is essential for its function. The hydrophilic (water-attracting) heads of phospholipids face outward and inward toward the water-rich environments, while the hydrophobic (water-repelling) tails face each other, forming the membrane's interior. This arrangement creates a semi-permeable membrane, with protein channels and transporters that assist in the selective movement of molecules.
what are the two modes through which the hypothalamus causes the release of hormones by pituitary gland?
Answer:
Explanation:
There are two sets of nerve cells in the hypothalamus that produce hormones. One set sends the hormones they produce down through the pituitary stalk to the posterior lobe of the pituitary gland where these hormones are released directly into the bloodstream. These hormones are anti-diuretic hormone and oxytocin.
The hypothalamus influences the pituitary gland's hormone release through hormonal and neural stimuli, involving releasing/inhibiting hormones for the anterior pituitary and direct secretion of hormones like oxytocin and vasopressin for the posterior pituitary.
The two modes through which the hypothalamus causes the release of hormones by the pituitary gland are hormonal stimuli and neural stimuli. The hormonal stimuli involve the hypothalamus producing hormones that stimulate the anterior portion of the pituitary gland to release other hormones regulating different endocrine glands. On the other hand, the neural stimuli method involves the neurons of the hypothalamus synthesizing hormones like oxytocin and vasopressin (or Anti-diuretic Hormone (ADH)), which are sent directly to the posterior portion of the pituitary gland and secreted into the bloodstream.
In the first mode, the hypothalamus secretes releasing hormones and inhibiting hormones that travel through capillaries to the anterior lobe of the pituitary gland, stimulating it to either release or stop releasing various pituitary hormones. For example, thyroid-stimulating hormone, released by the anterior pituitary, then stimulates the thyroid gland to produce hormones T3 and T4. The second mode is characterized by direct hormonal influence, where hormones like oxytocin and vasopressin produced by hypothalamic neurons travel via the infundibulum directly to the posterior part of the pituitary gland.
what is molecule what is atom what is chemistry
Explanation:
A molecule is a group of atoms bonded together representing the smallest fundamental unit of the chemical compund and that it can take part in a chemical reaction.
An atom is the smallest unit into which matter can be divided without the release of electrically charged particles. It is also a unit of matter that has a characteristic properties of the chemical element. The atom is the basic building block of chemistry.
Chemistry is the science that deals with the properties, composition, and structure of substances.
Jen makes a Venn diagram to compare active transport and passive transport
Answer:
Explanation: Active transport uses energy (ATP) for the moving the molecules in and out of the cellular membranes and therefore remain active, while in passive transport the molecules do not use energy for their movements and so the name is given as passive.
Active transport requires the expenditure of energy in the form of ATP to move substances against a concentration gradient, while passive transport does not require any energy and permits substances to move naturally from an area of higher concentration to one of lower concentration.
Explanation:The fundamental difference between active transport and passive transport involves the need for energy. Active transport requires energy in the form of ATP to move molecules against a concentration gradient - often through a membrane protein structure that functions as a pump. A known example is the sodium-potassium pump that uses energy to transport sodium out of and potassium into cells, both against their concentration gradient.
On the other hand, passive transport, does not require energy. Substances move from an area of higher concentration to lower concentration without the use of ATP or any form of energy. Passive diffusion and facilitated diffusion are two examples of passive transport.
In active transport, substances usually move from an area of low concentration to an area of high concentration, which is often termed as moving 'uphill'. The cell needs to expend energy in the form of ATP for this process. Passive transport happens naturally and does not require energy, as substances move from an area of high concentration to an area of lower concentration, going 'downhill'.
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Through the process of simple diffusion, materials move across a cell membrane
A.
from an area of higher concentration to an area of lower concentration.
B.
from an area of lower concentration to an area of higher concentration.
C.
between areas of equal concentration.
D.
all of these
Answer:
The correct answer is A from an area of higher concentration to an area of lower concentration
Explanation:
Diffusion is one of the most important membrane transport process which helps in the transport of small molecules and gases across the plasma membrane from higher concentration region to the region of low concentration until the concentration of the transported molecule becomes equal at both sides.
As the molecule move along the concentration gradient no external energy is needed to carry out simple diffusion.
Answer:
A. from an area of higher concentration to an area of lower concentration.
Explanation:
Through the process of simple diffusion, materials move across a cell membrane from an area of higher concentration to an area of lower concentration. The direction of movement can be into or out of the cell depending on the concentration of materials on either side of the membrane.
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What di eukaryotes most likely evolve from?
O A DNA
O B. Prokaryotes
Ốc Molecular potions
OD Bacteria
Answer:
Prokaryotes.
Explanation:
Most of the Eukaryotes most likely to evolve from the Prokaryotes. Prokaryotes are basically unicellular organisms that lack internal membrane-bound structures. So, they do not carry nucleus and generally have a single chromosome. Most of them have a cell wall outside the plasma membrane, which is a thin layer of lipid that completely surrounds the cell. Prokaryotes reproduce by binary fission method.
22 points!
One way to find out answers to questions is to conduct a step-by-step, controlled experiment using the _________
Answer:
Scientific method
A human adult has approximately 37 trillion (3.7 x 1013) cells in their body. Each cell has roughly 6.5 picograms (6.5 x 10-12 grams) of DNA.
How much DNA (in grams) is in an adult human’s body? (Show your work)
240.5 gram DNA is in an adult human’s body.
Explanation:
DNA is the genetic material in human body. It is given that each human cell has approximately 6.5 picograms of DNA. It is also given that there are 37 trillion cells in the body.
We have to calculate the amount of DNA in human body.
Number of cells=37 trillion = [tex]3.7 \times 10^1^3[/tex]
Amount of DNA per cell= 6.5 picogram = [tex]6.5 \times 10^-^1^2g[/tex]
Total amount of DNA in body= [tex]3.7 \times 10^1^3 \times 6.5 \times 10^-^1^2[/tex]
=240.5 g
Final answer:
To find the total amount of DNA in an adult human body, multiply 37 trillion cells by 6.5 picograms per cell and convert to grams. The result is approximately 240.5 grams of DNA.
Explanation:
To calculate the total amount of DNA in an adult human body, we will multiply the number of cells by the amount of DNA per cell. According to the question, an adult has approximately 37 trillion cells, and each cell has roughly 6.5 picograms of DNA. To find the total DNA in grams, we proceed as follows:
Total DNA (in grams) = number of cells ×amount of DNA per cell
Total DNA (in grams) = 37 trillion cells × 6.5 picograms/cell
We then convert the number of cells to a numerical value and picograms to grams:
Total DNA (in grams) = (3.7 × 10¹³ cells) × (6.5 ×10⁻¹² grams/cell)
Now, we multiply these two values:
Total DNA (in grams) = 3.7× 6.5 ×10¹³ × 10⁻¹²
Total DNA (in grams) = 24.05 10¹
Total DNA (in grams) = 240.5 grams
Therefore, the correct answer is that an adult human body contains approximately 240.5 grams of DNA.
A woman at 36 weeks’ gestation is admitted to the hospital to receive a tocolytic medication in an attempt to stop labor. In addition, betamethasone (Celestone) is prescribed to enhance fetal lung maturity. The prescription reads: administer betamethasone 12 my IM daily for 3 days. The betamethasone comes in a vial labeled 6mg/mL. How many millimeters should the nurse administer each day?
Answer:
The answer is 2 milliliters or 2 mL.
Explanation:
Betamethasone is considered a steroid medication. It is used to treat varieties of condition such as skin rashes, arthritis and in the case above, fetal lung maturity. When it comes to fetal lung maturity, Betamethasone is usually administered to women who are in the gestation period of 34 weeks to 36 weeks, depending on the condition. It is administered through the muscles also known as "IM" or "intramuscular" and the usual dosage is 12 mg. In the case above, it is asking for the mililiters of administration considering that the order was 12 mg IM daily for three days. Since the Betamethasone comes in a 6mg/mL vial, you have to compute how much Betamethasone is to be given.
If there's 6 mg of Betamethasone per 1 mL, then this means that there's 12 mg of the medication in 2 mL.
So, the answer is 2 mL.
As food travels through the digestive system it is exposed to a variety of pH levels. The stomach has a pH of 2 due to the presence of Hydrochloride acid and the smallest intestine has a pH ranging from 7 to 9. HCI converts pepsinogen into pepsin an enzyme that digests proteins in the stomach. Which of the following most likely happens to pepsin as it enters the small intestine.
The pepsin begins to replicate
The pepsin’s activity increases to digest more proteins
The pepsin becomes inactive
The pepsin’s shape changes to engulf large proteins
Answer:
The answer is C. Pepsin becomes inactive as soon as it reaches small intestine.
Explanation:
Enzymes are pH specific. They once work at those specific values and if those are changed they either degrade or become inactive. The pH of stomach is acidic and that of the small intestine is basic. Therefore the enzymes will become inactive when it enters small intestine.
Answer:
C, It becomes inactive
Explanation:
Enzymes have an ideal pH, at which they best function. Many enzymes cannot function
at all outside their ideal pH range. Pepsin functions best in the extreme acid
environment of the stomach and will, therefore cease to function in the much higher pH
of the small intestine.
which of the following departments would be included in a state governments public safety function
Which of the following departments would be included in a state government's public safety function?
A. Department of Education
B. Department of Emergency Management
C. Department of Environmental Protection
D. Department of Banking and Consumer Finance
Answer:The department of Emergency Management should be added to the public safety function by the state government.
Option B
Explanation:Public Safety function deals with those departments who are responsible for giving safety to the general citizens and curbing any sort of unexpected events that can disturb the natural environment of the state. Departments like department of police, emergency medicine are among these functions.
The department of emergency management is mainly supported by paramilitary or other trained personnel who are armed and have different tactics to curb the disturbances and nuisance being caused in the locality. It actually helps the normal citizens to live a safe and normal life. So this department should be added to the public safety function of the state.
How does static electricity result in cloud-to-ground lightning
Answer:
When the positive and negative charges grow large enough, a giant spark - lightning - occurs between the two charges within the cloud. This is like a static electricity sparks you see, but much bigger. Most lightning happens inside a cloud, but sometimes it happens between the cloud and the ground.
Explanation:
Final answer:
Static electricity results in cloud-to-ground lightning by creating a large electric field between the cloud, acting as one plate of a capacitor, and the ground. The discharge process involves a downward step-leader followed by an upward return stroke which we observe as lightning.
Explanation:
Static electricity leads to cloud-to-ground lightning due to the charge separation within the cloud and between the cloud and the ground. During an electrical storm, the cloud and the ground can be likened to a parallel-plate capacitor. The bottom of the cloud accumulates negative charges through frictional electricity caused by collisions of ice particles in the upper atmosphere. These negative charges repel negative charges on the Earth's surface, inducing a net positive charge below the thunderstorm. When the electric field's magnitude between the cloud and ground exceeds the critical value (Ec), the air gets ionized, and lightning can occur.
The lightning discharge process begins with a stream of electrons, known as a step-leader, descending towards the ground in a branching, ionized channel. When this step-leader nears the ground, a positively charged return stroke moves upwards to meet it. This creates a conducting path that allows for a massive transfer of electrons from cloud to ground and results in the bright flash and thunder that characterizes a lightning strike. The process can repeat numerous times along the same path in a single lightning strike, making lightning appear to flicker.
Which nucleotide bases form base pairs in DNA?
Adenine pairs with Thymine and Cytosine pairs with Guanine
Adenine pairs with Uracil and Guanine pairs with Cytosine
Adenine pairs with Guanine and Cytosine pairs with Thymine
Adenine pairs with Cytosine and Uracil pairs with Guanine
Answer:
Each base pair is formed from two complementary nucleotides (purine with pyrimidine) bound together by hydrogen bonds. The base pairs in DNA are adenine with thymine and cytosine with guanine.
Explanation:
In DNA, four types of nucleotide bases are present which forms base pair with each other such as adenine pairs with thymine and cytosine pairs with guanine. Thus, the correct option is A.
What are nucleotide bases?A nucleotide is composed of a nitrogenous base, a deoxyribose sugar, and a phosphate group. Nitrogenous bases are of two different types on the basis of nature of the ring present in the base: Purine and Pyrimidines.
Purines are made up of a pyrimidine and an imidazole ring. Purines include adenine and guanine. Pyrimidines are similar to pyridine in structure. These are of three types: Thymine, cytosine and uracil. In DNA, adenine and guanine are present along with thymine and cytosine.
Adenine base pairs with the thymine and forms two hydrogen bonds whereas cytosine base pairs with the guanine base with the help of three hydrogen bonds.
Therefore, the correct option is A.
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Cathy is using a high-powered microscope to look at a leaf. What does she see?
Answer:
Cells!
Explanation:
If you were studying the causes of cancer, which topic might interest you?
Question 15 options:
cyclin-dependent kinases
centromere structure
spindle-fiber structure
cell membranes
Answer:
If I were studying the causes of cancer, the topic which might interest me is "The topic of spindle-fibre structure.".
Explanation:
In cell division, the accurate segregation of chromosomes is coordinated with the complex structure of spindle fibre in cell. The mitiotic structure is consisted of two apparatus, one is centrosomes and the other is microtubules. Mitiotic spindle is formed during the polymerization process of the microtubules in centrosome. Any kind of disruption in the structure of the microtubules causes aberration in the spindle fibre structure and error in the number of chromosomes. This change is one of the major causes of developing cancer.
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Fill in the blank: Traits an organism develops during its lifetime are called ____________________ traits.
Acquired traits
Explanation:
The traits an organism develops during its lifetime are called acquired traits.
They are different from inherited traits in which organisms directly obtain from their parents.
Acquired traits are developed with time by an organism as a result of environmental influences. Inherited traits are passed from one generation to another. Acquired traits are non-inheritable and cannot be passed from generations to another.Learn more:
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if the genetic code used four bases as a code instead of three how many code units could be encoded? and why?
If the genetic code used four bases as a code instead of three then 256 units could be encoded.
Explanation:
There are 4 DNA bases that can make up the hereditary code. On the off chance that the codon for every amino corrosive was comprised of just 2 bases, just 16 unique codons would be conceivable.
Given:
1 Bases = [tex]4[/tex] DNA bases
2 Bases = [tex]4^2 = 16[/tex] DNA bases
3 Bases = [tex]4^3 = 64[/tex] DNA bases
4 Bases = [tex]4^4 = 256[/tex] DNA bases
Unmistakably this isn't sufficient. Be that as it may if every ha a codon made up of 3 bases (similar to the case) there are 64 potential blends which are all that could possibly be needed.
So for 4 bases, just 256 unique codons would be conceivable.
In which organism is mercury the LEAST concentrated?
A. algae
B. snails
C. large fish
D. small fish
Answer: D
Explanation: The consumption of fish especially the small fish e.g shellfish is by far the most significant source of ingestion-related mercury exposure in humans and animals.
A desalination plant is set up in a bay to provide fresh, drinkable water by removing salt from ocean water and returning the removed salt to the bay. How might the resulting increase in salinity in the bay affect the fish populations? (2 points)
Temperatures would decrease making a more suitable environment for fish populations.
The food sources available to the fish populations would increase.
Low levels of dissolved oxygen would increase.
Fish populations of all the species already living there would increase.
Answer:
Removing salt from ocean water and returning the removed salt to the bay. The resulting increase in salinity in the bay affect the fish populations because low levels of dissolved oxygen would increase.
Explanation:
Desalination plants work by reverse osmosis, meaning energy is needed to push water past a membrane at high pressure in order to separate the salt (learn more how it works). A typical plant takes an average of 10 to 13 kilowatt hours of energy per every thousand gallons processed.
Answer:
Low levels of dissolved oxygen would increase.
Explanation:
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what does selectively permeable mean?
Answer:
Selectively permeable means a membrane allows the passage of some molecules or ions and inhibits the passage of others.
Explanation:
Hope that helps :)
Answer:
Selective permeable means- to allow some molecules to pass and inhibit other molecules.
Explanation: The capacity to filter molecules to transport in or out of the cell is selective permeability.
Selective permeable membrane facilitates passage of specific molecules on the basis of some specific criteria. This kind of transport is ACTIVE TRANSPORT and requires energy.
Example is lipid bilayer of the cell membrane. It has both semipermeable abd selective permeable quality. The semipermeable layer allows passage of uncharged solutes. Lipid soluble molecules as fat soluble vitamins and some hormones can pass through the hydrophilic layer. Water can pass through the semipermeable membrane by osmosis and carbon dioxide and oxygen can pass through diffusion from this semipermeable membrane.
But for polar molecule, small ions, it is not easy to pass through this lipid bilayer. They passed through the transmembrane channels. Other large molecules pass through active transport. In active transport energy is required in the form of ATP.
What is the correct sequence of events in the field of molecular biology?
1.Friedrich Miescher conducted experiments to identify nuclein as the building blocks of life.
2.Gregor Mendel published his results to prove the Laws of Inheritance.
3.James Watson and Francis Crick proposed a model of DNA containing two linear strands of DNA.
4.Frederick Sanger developed a method for sequencing DNA.
Answer: In the field of molecular biology the correct sequence of events are as follows:
1. Gregor Mendel proves the Laws of Inheritance in 1865.
2. Friedrich Miescher conducted experiments to identify nuclein as the building blocks of life in 1869.
3. James Watson and Francis Crick presented a model of DNA in 1953.
4. Frederick Sanger developed a method for sequencing DNA in 1977.
In molecular biology, the key events include Mendel's presentation of the laws of inheritance, Miescher's discovery of 'nuclein', now known as DNA, Watson and Crick's proposal of the DNA structure, and Sanger's development of a DNA sequencing method.
Explanation:The field of molecular biology focuses on the interactions and processes within cells. In regards to the timeline of major events, the correct order is as follows:
Gregor Mendel published his results proving the Laws of Inheritance.Friedrich Miescher conducted experiments to identify nuclei, now known as DNA, as the primary constituents of life.James Watson and Francis Crick proposed a model of DNA structure, highlighting two linear strands.Frederick Sanger developed a crucial method for sequencing DNA.Learn more about Molecular Biology here:https://brainly.com/question/19138651
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What is the relationship between a chromosome and DNA?
Chromosomes are made of DNA.
DNA is made of chromosomes.
ODNA manufactures chromosomes.
Chromosomes manufacture DNA.
Answer:
Chromosomes are made of DNA
Explanation:
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