Answer:
Red blood cell production
Explanation:
Marrow makes blood and it is then sent to heart and lungs to be filled with oxygen
why a red blood cell burst when placed in water yet an onion epidermal cell does not?
Answer:
Hope it helps
Explanation:
The oncotic pressure inside the cell will be greater than the pressure outside. Thus causing the cell membrane to rupture. If red blood cells are placed in pure water, water enters into the red blood cells by osmosis and the red blood cells swell up and burst while the onion cells would absorb water due to osmosis, swell and become turgid.The cell sap move conc. than surrounding water gate into the cell by osmosis; the cell swells/becomes turgid; but does not burst due to the cell wall.
What happens as electrons move along the chain of molecules known as the electron transport chain?
They gain energy, which causes ATP molecules to lose phosphate groups.
They gain energy, which causes H *ions to join with oxygen to produce water.
They lose energy, which is then used by the cell to make ATP.
They lose energy, which is then used to break down ATP.
Answer:
The correct answer is the third statement.
Explanation:
ETS or electron transport chain is the last stage of aerobic cellular respiration that leads to the formation of a huge amount of adenosine triphosphate also known as ATP which is the energy currency of the cell.
It occurs in the inner mitochondrial membrane. Electrons are passed through various protein complexes present in the inner membrane of mitochondria.
As electrons pass through the electron transport chain, electrons move from a higher to a lower energy level and are ultimately passed to oxygen.
During this process, Energy release in the electron transport chain is trapped as a proton gradient. Due to this concentration gradient, ATP synthase is a final protein complex, forms ATP.
Thus, the correct answer is the third statement.
What might geneticists learn about genes by studying rna.
by studying RNA, geneticists could learn about where genes begin and end on a chromosome. they could also learn about where genes are active in different types of the cells.
By studying RNA, geneticists can learn about gene expression patterns, how changes in RNA can affect these patterns, and gain insights into the complex genetic code that defines each protein sequence. RNA's roles in transcribing DNA and translating it into proteins are also significant areas of understanding.
Explanation:Geneticists can gain a wealth of knowledge about genes by studying RNA, particularly regarding gene expression. RNA stands for ribonucleic acid, a molecule that plays a crucial role in the process of transcribing the genetic instructions inscribed on DNA and translating them into proteins. Each protein sequence is determined by a three-nucleotide sequence in RNA called the triplet codon, effectively forming a genetic code.
By studying RNA, geneticists can discern patterns in gene expression and even predict how changes in specific DNA or RNA sequences could potentially alter this expression. For instance, the Human Immunodeficiency Virus (HIV) is an RNA virus that uses its RNA as a template to create DNA, demonstrating a deviation from the standard genetic flow of information. This highlights the importance of RNA in the realm of genetics and why its study is so vital to understanding the complex interplay of genetic expressions in living organisms.
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ext ©
Introduction to Biology: Mastery Test
How is a scientific law different from a scientific theory?
OA.
A theory becomes a law after a long period of time has passed.
OB.
A theory is used for biology and chemistry and a law is used for physics.
HEEGES
U
C.
A theory is why something happens and a law is how something happens.
Co
Island
SA
BO
D.
A theory cannot be disproved but a law can be disproved.
nit
ES
A scientific law describes a generalized pattern in nature and is often expressed as a mathematical equation, while a scientific theory provides a comprehensive explanation for a group of related phenomena. Scientific laws describe what happens, and theories explain why and how it happens.
Explanation:The difference between a scientific law and a scientific theory is a fundamental aspect of scientific knowledge. A scientific law uses concise language to describe a generalized pattern in nature that is supported by scientific evidence and repeated experiments, often expressed in the form of a mathematical equation. In contrast, a scientific theory is a well-supported explanation of observations; it is more complex and dynamic, explaining a group of related phenomena rather than describing a single action. For instance, Newton's second law of motion, which can be summarized by the equation F = ma, is an example of a scientific law, while the Theory of Evolution is an example of a scientific theory.
Therefore, option C, stating that a theory is why something happens and a law is how something happens, accurately reflects the difference between a scientific law and a scientific theory. Scientific laws describe what happens under certain conditions in nature, often mathematically, while theories provide the explanation behind these observations, elaborating on why and how the phenomena occur.
What causes upwelling?
Explanation:
Upwelling is a oceanographic phenomenon. It is a process which results in the replacement of warm and nutrient less water with the cold and nutrient enriched water at the surface of oceans, seas, etc. As a result of this process, the surface water rises. The phenomenon behind this process is that the high intensity winds move the cold water from the middle of the ocean or sea towards the surface of the ocean or sea replacing the warm water which was present there. Due to this process, the nutrient enriched water reaches the surface of the oceans and seas.
(Wind) should be your answer
(APEX)
What is the answer for B?
Answer:
wheres b?
Explanation:
Which of the following is NOT a piece of evidence of evolution?
A graph______________.
check all that apply
is a visual representation of any differences or changes among groups
helps the reader understand statistic/results
is a type of statistic
is rarely based on actual data
is just a picture, and does not convey information regarding data
Answer:
your answer is the 1st & 2nd choice.
Explanation:
A graph is meant to illustrate the differences between 2 mediums. It could involve company sales, customer satisfaction between different years of production.
The Graph could be a visual representation of any differences or changes among groups that helps the reader understand statistics/results and sort of statistics.
The correct statement that defines the graph is the visual representation and kind of statistics.
Graph-
A diagram (such as a series of 1 or more points, lines, line segments, curves, or areas) that represents the variation of a variable as compared thereupon of 1 or more other variables.
The definition of a graph may be a diagram showing the relationships between two or more things.
An example of a graph could be a chart (mathematics) A diagram displaying data, particularly one showing the connection between two or more variables; specifically, for a function, the set of all tuples.
Thus, options A and B define the graph that is the visual representation of any differences or changes among groups and a type of statistics.
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How are organisms in the domains Bacteria and Archaea similar?
A. They are protists.
B. They are ancestors of eukaryotes.
C. They have membrane enclosed organelles.
D. They lack a nucleus.
Answer:
D
Explanation:
they are prokaryotes thus do not have a nucleus and membrane-bound organelles
The organisms in the domains Bacteria and Archaea are similar as they lack a nucleus. Thus, the correct option is D.
What do you mean by Archaea?Archaea may be defined as the unicellular microorganisms that do not have internal membranes but both have a cell wall composed of various polysaccharides and glycoconjugates and use flagella to swim.
Both bacteria and archaea are prokaryotes and do not have a nucleus and well-defined membrane-bound cell organelles.
Therefore, the correct option is D.
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Susan is planting her garden and choosing plants at the local plant nursery. She tells the clerk that she wants to plant perennials in her front garden bed. How often is Susan expecting the plants that she chooses to germinate and flower? A. Grow into larger, permanent trees and shrubs
B. Sprout every year for two years
C. Sprout every year, year after year
D. Sprout this year and need to be replanted
Answer:
C. Sprout every year, year after year
Explanation:
The perennial plants are the plants that live for more then two years, thous some may argue that they are plants that live more then three years. Whichever the case, they are not short-lived plants, but are capable of surviving for numerous years, unlike the annuals and biennials. Theoretically, the shrubs and trees would fall into this category, but they are classified separately, and this term is not used for them, but for smaller plants that do not have or have very little woody parts. These plants tend to sprout every year, and even though they seemingly die in the autumn, their roots are alive, and they emerge and grow again in the spring, sprouting again. That process repeats itself for numerous years.
Answer:
The correct answer will be option C.
Explanation:
Perennials the plants which grow for more than two seasons form the grown parts of the same plant.
The seeds of the plants are not to be sown every year as they sprout from the same part of the plant called root after they die out during winter. After winter the same root again forms the plants like observed in flowering plants of Hibiscus and Daisies.
Thus, option C-sprout every year, year after year is the correct answer.
which of the following is an example of a non Mendelian pattern of inheritance?
a. when individuals with the genotype BB cross all of the offspring have brown fur
b. All traits are inherited through patterns found by Mendel
c. When pea plants that are heterozygous for a certain trait cross same of the offspring express both distinct versions of the trait
d. When snapdragons that are true breeding for white flowers cords with snapdragons that are true breeding for red flowers the offspring produce pink flowers
Answer:
B). All traits are inherited through patterns found by Mendel.
The inheritance pattern in all the traits is observed to follow the Mendelian inheritance pattern. Thus, option B is correct.
What is the Mendelian pattern of inheritance?The Mendelian pattern of inheritance can be described as the phenotypic change in the traits with the cross between the parents.
The non-mendelian pattern is based on crossing over and non-segregation of genes in the offspring.
The separated traits result in the offspring having traits of both the parents in the cross.
In the given statements, the segregation of the genes based on the Mendelian inheritance is observed. Thus, all the traits are inherited by the Mendelian inheritance pattern. Hence, option B is correct.
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Match the following. 1. the process involving the division of the nucleus in a reproductive cell; responsible for genetic recombination meiosis 2. the process involving the division of the nucleus of a body cell ovum 3. the condition of having oogametes—gametes of different sizes and shapes; usually have eggs and sperm sexual reproduction 4. (pl. ova) the egg cell; a female gamete oogamy 5. the form of production of new individuals by two parents in which the offspring obtains half of its hereditary information from each parent mitosis 6. a small, flagellated male gamete that swims to the egg to fertilize it sperm
Answer:
1. Meiosis: The process involving the division of the nucleus in a reproductive cell...
2. Mitosis: the process involving the division of the nucleus of a body cell
3. Oogamy: the condition of having oogametes...
4. Ovum: the egg cell...
5. Sexual Reproduction: the form of production of new individuals by two parents....
6. Sperm: a small flagellated male gamete...
Explanation:
1. Meiosis is a type of cell division that produces gametes, or reproductive cells. The process produces haploids, which have half the number of chromosomes as the parent. Genetic recombination occurs in meiosis, where there is an exchange of genetic information between the chromosomes, which bring about genetic diversity.
2. Mitosis is also a type of cell division, but unlike in meiosis, they produce clones of the parent cell. They produce diploids and this occurs in body cells. The purpose of mitosis is for growth, repair and asexual reproduction.
3. Oogamy is a form of sexual reproduction. What you would observe with oogamy is that one sex cell or "gamete" is bigger than the other gamete and the bigger gamete is non-motile or it can't move, while the other can. The egg cell for example is larger than the sperm cell, but it cannot move, while the sperm cell can.
4. The female gamete is called the ovum, plural form would be ova. This is also known as the egg cell. It is non-motile, so that means it cannot move. It's main purpose is to be fertilized by the sperm cell.
5. Sexual reproduction is the fusion of two gametes, which produces a fertilized egg, or a zygote. These gametes are haploid cells, which are produced in meiosis, and they each have half the genetic information of their parent cell. Thus the offspring produced will be genetically different from their parents.
6. The sperm cell is the male gamete. It has a flagella, which is like a tail that helps it move. It's main purpose is to fertilize an egg cell.
1.Meiosis
2.Mitosis
3.Oogamy
4.Ovum
5.Sexual Repoduction
6.Sperm
Liquid water turns into water vapor at which step in the water cycle
Answer:
When water is collected from vapour form to liquid form then this process is known as condensation.
For example, water evaporated from the atmosphere reaches to the clouds and it gets converted into liquid form and again reaches to Earth in the form of rain.
Thus, we can conclude that process in which water vapor turns to liquid is called condensation.
Answer:
Liquid water turns into water vapor when it evaporates, so it fits into the evaporation step in the water cycle.
This is the amino acid cysteine. Circle the amine group, put a box around
the carboxylic acid group and use a different colored pencil/pen to circle the side
chain (R group).
H O
| ||
NH2— C- C-OH
|
CH2
|
SH
The amine group in cysteine is NH₂ found on the left side of the molecule. The carboxylic acid group is COOH found on the right side of the molecule. The R group or side chain in cysteine is CH₂-SH.
Explanation:The amine group in an amino acid is the part of the molecule that contains nitrogen (NH₂). In the case of cysteine, this would be on the left side of the molecule. You can circle this part. The carboxylic acid group is the part of the molecule that contains a carbon atom double-bonded to an oxygen atom and also bonded to a hydroxyl group (C-OH). In cysteine, this would be towards the right side of the central carbon. You can put a box around this. The R group, or side chain, is different for each different amino acid. For cysteine, this is composed of a carbon atom bonded to a sulfhydryl group (CH₂-SH). You can use a different color to circle this part.
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which is an example of a decomposer?
A. Bear
B.Algae
C.Grass
D.Bacteria
Answer: D Bacteria
Answer:
D.Bacteria
Explanation:
A & B are primary producers
D is a secondary consumer
The answer is D. Bacteria.
Bacteria breaks down dead organisms, keeping our planet from being buried in dead organisms. Thus, bacteria bear and important task in being a decomposer.
Hope this helps!
why does competiton happen?
A: Different organisms have different needs
B: There are limited resources in an ecosystem
C: There are no predators in an ecosystem
D: Organisms do not need the same resources
(I think it's B but I'm not sure)
Describe the two types of vascular tissue
Answer:
1; Xylem 2; phloemExplanation:
In human males, the process of cell division, meiosis occurs in cells of the:
Answer:
testes
Explanation:
In human males, the process of cell division, meiosis occurs in cells of the testes.
The process of Meiosis occurs in the sexual organs of sexually reproducing organisms,
which kind of electrical charge is found on a hydrogen atom of a polar water molecule
Answer:
it would have a positive charge.
An organism’s allele combination is called the
Answer:genotype
Explanation:
Answer:
Genotype
Explanation:
Got it correct on ck12
Which statement about the pancreas is not true?
A. It is an endocrine organ in the abdomen.
B. It release chemicals into the digestive system.
C. It releases insulin to increase glucose levels.
D. It release hormones into the bloodstream.
The incorrect statement is C, stating that insulin is released to increase glucose levels. Insulin actually helps to lower blood glucose levels by encouraging cells to absorb glucose.
Explanation:The statement about the pancreas that is not true is: C. It releases insulin to increase glucose levels. The pancreas indeed functions as both an endocrine and exocrine gland. As an endocrine gland, it releases hormones like insulin and glucagon into the bloodstream. Insulin's role is to decrease blood glucose levels by facilitating the uptake of glucose into cells. Conversely, glucagon works to increase blood glucose levels by stimulating the liver to convert glycogen to glucose.
As an exocrine gland, the pancreas secretes digestive enzymes into ducts that lead to the gastrointestinal tract, aiding in the digestion of food. Moreover, the pancreas produces bicarbonate to neutralize the acidity of the contents entering the small intestine from the stomach.
what effects would el nino most likely have on organisms?
El Niño would lead to the death of organisms or populations, El Niño would cause organisms to move in search of food and better conditions.
Hello. This question is incomplete. The full question is:
"What effects would el niño most likely have on organisms? check all that apply :
el niño would lead to the extinction of a species. el niño would lead to the death of organisms or populations. el niño would cause changes in the genetic makeup of organisms, el niño would cause continents to move to different parts of the planet. el niño would cause organisms to move in search of food and better conditions."
Answer:
El Niño would lead to the death of organisms or populations. El Niño would cause organisms to move in search of food and better conditions.Explanation:
El Niño is a climatic phenomenon that has many effects on nature. Basically, this phenomenon is characterized by the promotion of trade bliss from the east towards the west. When this occurs, the result is an accumulation of hot water in the upper layer of the Pacific oceans. With the increase in water temperature, evaporation becomes much higher than normal, forming large clouds laden with water vapor in this region, which will result in a strong rainy season.
El niño can affect the fauna of this region in a great way, some examples that can happen are:
El Niño would lead to the death of organisms or populations. El Niño would cause organisms to move in search of food and better conditions.Which three steps describe how an animal obtains and uses energy for growth?
First, an animal eats another organism. Then, food is built into larger molecules. Next, the animal's cells use molecules to
make new cells.
First, food is built into larger molecules. Then, the animal eats another organism. Next, the animal's cells use molecules to
make new cells.
First, an animal eats another organism. Then, food is broken down into smaller molecules. Next, the animal's cells use
molecules to make new cells.
First, food is broken down into smaller molecules. Then, the animal eats another organism. Next, the animal's cells use
molecules to make new cells.
Answer:
Your answer will be : option (C)
First, an animal eats another organism. Then, food is broken down into smaller molecules. Next, the animal’s cells use molecules to make new cells.
Explanation:
Growth can be defined as the increase in the size and change in shape of a developing organism that directly depends upon the increase in the number and size of the cells that makes up an organism.
First, an animal eats another organism. Then, food is broken down into smaller molecules. Next, the animal’s cells use molecules to make new cells are three steps which describes how animals obtains and uses energy for growth because it directly related to the definition of growth in an organism.
Answer:
Explanation:
First an animal eats another organism;
its body digests the nutrients and the mollecules;
the mollecules are used by the body to generate energy to grow
Genes that come together with different alleles are called______.
heterozygous.
homozygous.
genotype.
segregated.
Answer:
Genes that come together with different alleles are called heterozygous. ( first choice)
Question 8 (5 points)
Radioactive elements comprise a majority of the____
actinides
halogens
lanthanides
noble gases
Radioactive elements comprise a majority of the "ACTINIDES"
These are elements in the bottom row of the periodic table.
Answer: Option A. actinides
Explanation:
Radioactive element is an element whose nucleus degenerate spontaneously due to the emission of alpha and beta particles, or gamma rays.
Radioactive elements are majorly comprise of Actinides.
Actinides also called actinoids, all are radioactive elements and release energy on radioactive decay. Uranium and thorium are naturally occurring whereas plutonium are synthetic actinides which are most abundant actinides on Earth.
Hence, the correct option is A.
What is is called when group of organisms show rapid rate of diversification in their form for a period of time A)adaptive radiation B) extinction C)macroevolution D)speciation
Answer:
B - Extinction.
Explanation:
The organisms are rapidly become diverse from each other, causing the extinction of the original organism.
Which term best characterizes the role of corals in a coral reef ecosystem?
O
A. Photosynthetic
B. Parasitic
C. Abiotic
D. Biotic
Answer:
D. Biotic
Explanation:
Biotic best characterizes the role of corals in a coral reef ecosystem.
Which of the following statements is considered true of Neanderthals?
A. They evolved into homo sapiens.
B. They had some system of religious beliefs about afterlife.
C. They had smaller brains than homo sapiens (modern humans).
D. They emerged after the ice age.
Answer: B. They had some system of religious beliefs about afterlife.
Explanation:
Neanderthals are believed to have had some system of religious beliefs because they buried their dead. They did not evolve into modern humans but rather interbred with them and had larger brains compared to Homo sapiens. Neanderthals lived during the ice age, not after, and were well-adapted to cold climates.
Explanation:The correct statement about Neanderthals is that they had some system of religious beliefs about the afterlife. Archaeological evidence, such as burial sites, suggest this could be true as they buried their dead, which may imply a belief in an afterlife. Neanderthals evolved from Homo erectus and did not evolve into Homo sapiens (modern humans), but they did interbreed with them.
Neanderthals had larger brains in absolute terms compared to modern humans, although their brain size is typically considered in proportion to their overall more robust body size. They lived during the ice age, thus they did not emerge after it. Neanderthals, indeed a distinct group from Homo sapiens sapiens, showed a great capacity to adapt to cold climates and had strong, muscular builds suited for survival in harsh conditions.
which of the following is the most likely outcome of global warming
Answer:
Ongoing effects include rising sea levels due to thermal expansion and melting of glaciers and ice sheets, and warming of the ocean surface, leading to increased temperature stratification. Other possible effects include large-scale changes in ocean circulation.
Explanation:
how many electrons are in outermost energy level of an oxygen atom as it shares electrons with hydrogen atoms as part of a water molecule
Answer:
8 electrons
Explanation:
This gives each hydrogen atom two electrons in its outer energy level, which is full. It also gives oxygen 8 electrons in its outer energy level, which is also full.
Please mark brainliest and have a great day!
hydrogen atom two electrons in its outer energy level, which is full. It also gives oxygen 8 electrons in its outer energy level, which is also full.