I think it's letter C...
How many atoms are there in 2.8 moles of carbon? Show work
Final answer:
To find the number of atoms in 2.8 moles of carbon, multiply the number of moles (2.8) by Avogadro's number (6.022 × 10²³ atoms/mole) to get approximately 1.68616 × 10²´ atoms.
Explanation:
To calculate the number of atoms in 2.8 moles of carbon, we can use Avogadro's number, which is 6.022 × 10²³ atoms per mole. By definition, a mole is an amount of substance that contains the same number of particles as there are atoms in 12 grams of carbon-12.
The steps are as follows:
Identify the number of moles given, which is 2.8 moles of carbon.Multiply the number of moles by Avogadro's number to get the total number of atoms.Calculation:
2.8 moles × 6.022 × 10²³ atoms/mole = 1.68616 × 10²´ atoms
So, 2.8 moles of carbon contains approximately 1.68616 × 10²´ atoms of carbon.
What life style events can affect your biology?
Hi,
There is a relatively new branch of genetics that is called epigenetics, which provides information that how can environmental factors or life style changes can affect the expression of genes without causing changes in the nucleotide sequences of the genes.
You can think about epigenetics as *Tags* which can switch genes on and off just like when we turn a lamp on it produces light and when we turn it off light donot shines.
So, how our life events affect our biology are through several ways.Dr. Rudolph Tanzi is a professor at Harvard university who showed that factors like diet, sleep, behavior and other environmental circumstances can affect our biology by triggering specific genes on and off.
For example: the studies showed that only one week of insufficient sleep can alter the activity of almost 700 genes by triggering different processes like stress, anxiety, mood swings etc.
Similarly, if we have a life style where we feel positive about everything, feel gratitude about blessings then it has shown to positively regulate the activity of genes by causing mind freshness and calmness and more stability of moods.
Similarly, diet can also affect our biology in several ways. For example: a diet that is excessively rich in carbohydrates can attack our genes and cause disbalance in blood glucose levels. While a diet rich in sulforaphane, resveratrol and epigallocatechin gallate (green tea) can reverse the damage to DNA and promote a good health.
Hope it help!
what is expected to happen during el niño
Answer:During an El nino there is change in the surface waters in the central and eastern Pacific Ocean.
Explanation:
During an El nino there is change in the surface waters in the central and eastern Pacific Ocean. The change makes them to be normal than usual. The change is as a result of the atmosphere and the winds blowing over the vast Pacific.
El nino also happen when natural climate pattern where sea water in the central and eastern tropical Pacific Ocean is warmer than average.
How many atoms of each element does sodium carbonate, Na2CO3, contain? Sodium = 1 atom, Carbon = 2 atoms, Oxygen = 3 atoms Sodium = 1 atom, Carbon = 1 atoms, Oxygen = 3 atoms Sodium = 2 atoms, Carbon = 1 atom, Oxygen = 3 atoms Sodium = 2 atoms, Carbon = 3 atom, Oxygen = 3 atoms
Answer:
2 sodium
1 carbon
3 oxygen
Explanation:
Na2 = 2 Sodium
C = 1 carbon
O3 = 3 oxygens
1.What is gene expression?
2.What is a methyl group and what does it do?
3.How does the environment effect the epigenome?
4.Can choices you make today potentially affect the health of your future children? Explain.
2. A methyl group is a carbon with 3 hydrogen atoms which is an alkyl derived from methane. A methyl group is significant in gene expression. When methyl group are attached to DNA molecules (in a process called DNA methylation), the process promotes histone complexes hence silences genes.
3. The epigenome is the collection of biochemical compounds and processes that affect the DNA and gene expression without affecting the DNA sequence. His environment affects the epigenome by indirectly affecting DNA methylation and histone modification. This subsequently affects how a gene is expressed.
4. Based on the aforementioned, it is significant to note that environmental influences on a person begin prenatally (before birth). Genome-wide changes occur immediately after fertilization, therefore life choices, like substance abuse during pregnancy, will affect the character and health of the child postnatally.
What is the difference between weather and climate? Give examples of each. -Why is the science of meteorology important to the everyday, average citizen? Talk about a time when meteorology impacted your plans for the weekend. -How do dew point and relative humidity work? -What are three specific thunderstorm (or hurricane, or tornado, etc) safety rules that everyone should know? - Explain how hurricanes form and where they get their energy. -What is the greenhouse effect? Why is it important to maintaining life on earth?
The first question's answer is...
"Whereas weather refers to short-term changes in the atmosphere, climate describes what the weather is like over a long period of time in a specific area. ... Looking at Climate Normals can help us describe whether the summers are hot and humid and whether the winters are cold and snowy at a particular place."
Which of the following is usually the least disruptive (least serious) type of mutation if it occurs within a gene?
A.) trinucleotide repeat
B.) nucleotide insertion
C.) single nucleotide substitution
D.) nucleotide deletion
Hi Greenrune13.
Answer: B. Nucleotide insertion
Explanation: Nucleotide insertion is the following is usually the least disruptive at least serious types of mutation if it occurs within a gene.
I hope this helps you!
Have a nice day! :)
:D
-Charlie
Thank you! :)
:D
After a direct blow to the eyeball with a soccer ball, your athlete complains of double vision and numbness in her cheek. you also notice that she has noticeable swelling and a downward displacement of the injured eye. what injury might you suspect?
In the given case, one may suspect for an orbital fracture.
An orbital fracture refers to a traumatic injury to the eye socket bone. These injuries are generally the outcome of blunt force trauma to the eye. There are three prime kinds of orbital fractures, which can take place:
1. Orbital rim fractures take place in the eye socket's bony outer edges.
2. The blowout fractures take place when the rim remains intact, however, a crack produces in the wafer-thin bone, which forms the eye socket floor.
3. Direct orbital fractures refer to the rim fractures, which have elongated into the floor.
Based on the Cell Cycle Summary Chart above, which statement pair is correct?
A
G1 phase - DNA replication
B
G2 phase - preparation of mitosis
C
S phase - DNA replication
D
M phase - mitosis
Answer:
it is c
Explanation:
Choose all that apply : Growth _____.
*occurs only in multicellular organisms
**only increases size of cells
***usually increases the complexity of an organism's structure
****is unpredictable
Answer: usually increases the complexity of an organism's structure
is unpredictable
Explanation:
Growth is define as the considerable increase in the size, age, height, length and weight of the organism. With the increase in the growth of the organism the complexity in structure of the organism also increases due to increase in the number and size of the cells. The growth is unpredicatable phenomena due to factors such as availability of food and water, genetic and environmental factors.
Answer:
***usually increases the complexity of an organism's structure
Explanation:
The other answer says usually increases the complexity of an organism's structure is unpredictable, that is two answers in one so the answer would be ***
Which conclusion can be drawn based on the sedimentary rock diagram below?
A. Trilobites are younger than clams.
B. Snails and clams evolved into mammals.
C. All species once lived on land.
D. Biodiversity increased with time.
what is the purpose of adding foreign DNA to a bacterial cell called?
a)transformation
b)biotechnology
c)genetic testing
d)nondisjunction
The answer is A. Transformation.
Answer:
a) transformation
Explanation:
The recombinant DNA molecule produced is introduced into a host organism (such as a bacteria) and can then be replicated. This process is known as transformation, in which bacterial cells capture DNA from the external environment.
Host cells copy the vector DNA along with the DNA itself, creating multiple copies of the inserted DNA. Some examples of host cells are the bacteria Escherichia coli and Bacillus subtilis and the yeast Saccharomyces cerevisiae.
what is the effect of sickle cell anemia
Answer:
Sickle Cell Anemia:It is a type of disorder which occurs inside the red blood cells or RBC's of the blood medium. And is mainly caused by the deficiency in the oxygen molecules inside the blood medium leading the nerves and the cells to have lack of oxygen.
As, the target cells become more sickle in shape and they are unable to carry on the transportation of the oxygen,O₂ molecules through the given path way or arteries inside the circulatory system present in the body.
Target Cells in the Body and Cause:It is mainly caused by the deficiency in the level of oxygen,O₂ molecules inside the blood medium, as its not because of the lack of oxygen present in the air but due to receiving an abnormal gene by the person leads to abnormality in the structure or shape of the hemoglobin over all. Making the RBC's unable to carry enough oxygen to all the cells.
Diseases or disorders caused by the sickle anemia:Due, to lack of oxygen in the blood medium causes the cells to die and remain under nourished.Damage to the nerves and the arteries is caused leading to some of the heart diseases and the liver disorders.Some body parts may stop working due to less supply of oxygen to them.Most of the patient's body become pale and less developed both physically and mentally.Answer:
What are some of the results of having sickle-cell anemia
blood clotting
resistance to malaria
Explanation:
What Type Of Cloud Is Cloud A. What kind of weather might you expect when you see clouds of this type?..
Cloud A is a Cumulus cloud. You should expect fair weather.
Answer:
It is 100% A!
Explanation:
Please Help!!!!
A man who is color-blind marries a woman who is not color-blind and is not a carrier of the allele for color blindness. Create a Punnett square to predict the possible genotypes of their children.
Answer:
The punnet square
Explanation:
In order to create a punnet square you have to name the or put a representation to the genes, les say it would be C and N, C for colorblind and N for normal:
Father Mother
N N
C CN CN
N NN NN
So that would be the punnet square, remember that sex comes into consideration because women can´t be colorblind nor carriers of the gene.
Which TWO descriptions are examples of mechanical energy?
1. a bird flying in the air
2.a tiger ready to pounce on its prey
3.a child chewing food
4.a girl sitting on a motionless swing
5.a log of wood on a riverbank
The correct answers are:
a tiger ready to pounce on it's prey
A child chewing food
A mother brings her 2-year-old child to the clinic because of her concerns about the child's nutritional status. for the last week, he has refused to eat anything except animal crackers and peanut butter and jelly sandwiches. which measure would be most appropriate for the nurse to suggest?
Answer:
The nurse should suggest that the child's mother not offer food from the main meals, so that the child is hungry, and the mother should eat small portions of food.
Explanation:
One of the things that worries parents the most is the lack of appetite of their children. After carefully and lovingly preparing food, it is difficult to understand why they refuse to eat and prefer to eat things that are not nutritious enough. Many parents go through this and end up seeking medical help to deal with this problem.
In such cases, what a nurse may suggest is that parents should avoid giving drinks and other types of food during meals, as they reduce appetite and should not overfill the child's plate. Ideally serve smaller portions and wait for the child to want to repeat.
The nurse should recommend engaging the child in meal planning and prep, providing nutrient-dense foods, and creating a pleasant mealtime atmosphere to encourage healthier eating habits.
For a child refusing to eat anything but animal crackers and peanut butter and jelly sandwiches, the nurse should suggest a balanced approach to nutrition that encourages parental involvement in meal planning and includes the child's participation in food preparation. To address a 2-year-old's particular eating habits, it would be most appropriate to:
Involve the child in meal planning and preparation, making the experience educational and enjoyable.Provide nutrient-dense foods at mealtime and snack-time and limit high-calorie, low-nutrition options.Maintain a pleasant mealtime atmosphere, avoiding stress and pressure, to foster a better eating experience.Keeping mealtimes positive and engaging while providing balanced, nutritious options can encourage children to diversify their diets without imposing undue stress or negative associations with food.
Identify the characteristics of a cell. Check all that apply. measures 3-500 micrometers infects all forms of living cells grows and reproduces responds to stimuli contains DNA or RNA, not both contains a cell membrane
1,3,4,6 is the answer
Cells have several defining characteristics, such as the ability to grow, reproduce, respond to stimuli, contain DNA or RNA, and possess a cell membrane. Prokaryotic cells are a typical example that can be identified by these features when observed under a microscope.
Explanation:Characteristics of a cell include:
Measures between 3-500 micrometers, although most prokaryotic cells are smaller (0.1 to 5.0 µm).Grows and reproduces, which is one of the fundamental properties of cells.Responds to stimuli, exhibiting responsiveness to the environment.Contains DNA or RNA, not both at the same time; cells contain genetic material for replication.Has a cell membrane that separates the interior of the cell from its external environment.An example that justifies these identifications is the prokaryotic cell, as seen under a microscope, which might include a cell wall, plasma membrane, cytoplasm, ribosomes, and DNA in a nucleoid region, without a membrane-bound nucleus. Such cells may also possess additional structures like flagella, pili, or capsules.
A chloroplast is an organelle inside of cells. True or False
The answer would be, True, A chloroplast is an organelle inside of cells.
True
A chloroplast is an organelle with in the cells of plants and certain algae that is the site of photosynthesis , which is the process by which energy from the sun is converted in to chemical energy for growth . they are double -membrane organelle with the presence of outer , inner and inter membrane space . There are two distinct regions present inside a chloroplast known as the grana and stroma.
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Bo was reading in his science book and discovered that marble is a type of rock that is found in Georgia. He read that marble is formed when limestone deep below Earth's surface is heated and pressure is applied. What type of rock is marble?
Final answer:
Marble is a metamorphic rock formed from limestone under high heat and pressure, known for its light color and durability, and used historically in construction and sculpture.
Explanation:
Marble is a type of metamorphic rock that is formed under the surface of the Earth. It originates when limestone is subjected to high heat and pressure, causing it to recrystallize. This process transforms limestone into marble, a harder rock typically characterized by a light color, often white, due to its calcite or dolomite composition. Marble also features colorful markings, contributed by impurities in the original limestone. With its beautiful appearance and durability, marble has been quarried for centuries and used in various applications like buildings and sculptures.
What part does subduction play in the rock cycle?
A. It breaks rocks into sediment
B. It decreases pressure on buried rocks
C. It pulls rocks deep into earth
D. It pushes rocks up to Earths surface
Answer:
Option (C)
Explanation:
The subduction zones are the features that are created along the convergent plate boundary, where two plates move towards each other. As both the converging plate collides, the denser and heavier plate subducts below the less denser plate and this results in the formation of the subduction zone. As the heavy plate goes down, the pressure on the buried rocks increases and the denser rocks are pulled down deep into the greater depth, where the rocks undergoes partial melting. This zone is marked by the presence of a V-shaped trench that lies just above it.
Thus, the correct answer is option (C).
a(n)------ kills insects. The suffix -cide comes from the latin word caedere, which means "to strike, kill"
helllllllllo what exactly are u looking for
The correct answer to the question is a. insecticide.
The suffix -cide in the word insecticide comes from the Latin word caedere, which means to strike, kill.
The word insecticide is composed of insect, referring to the target organisms, and -cide, indicating that it is a substance that kills insects. Therefore, an insecticide is a chemical agent used to kill insects. The other options provided do not fit the definition given in the question, as they pertain to different contexts or do not correctly combine with the suffix -cide to indicate the killing of insects.
Frank had researched how solar technology can help save every. Which group should frank approach to share his findings?
A. SERI/NREL
B. IPCC
C. EPA
D. NOAA
the answer is A) SERI/NREL i think
The distribution of na+ ions across a typical biological membrane is 10 mmol/dm3 inside the cell and 140 mmol/dm3 outside the cell. at equilibrium, the concentrations are equal. what is the gibbs energy difference across the membrane at 37 deg c? assume activities are equal to concentrations. answer in kj/mol. note the difference should be calculated assuming the initial and final states are inside and outside of the cell, respectively.
The Gibbs free energy of the system refers to a state function as it is illustrated in terms of thermodynamic characteristics, which are state functions. ΔG = -RT ln(K)
K is just the concentration of keeping it at one end.
K = 10 mmol / 140 mmol
R is a constant = 8.31447 J/molK
T = 273 + 37 = 310 K
ΔG = -310 × 8.31447 × ln (10/140)
= 6802 J.
Explain how a forensic biologist would analyze a tiny sample of DNA found at a crime scene.
Forensic biologists analyze tiny DNA samples using PCR and STR loci analysis, comparing it with criminal DNA databases.
Forensic biologists analyze tiny samples of DNA found at crime scenes through a process involving DNA isolation, sequencing, and analysis. They primarily use polymerase chain reaction (PCR) amplification of short tandem repeat (STR) loci and electrophoresis to determine the length of the PCR-amplified fragment.
One of the main focuses is on mitochondrial DNA sequencing for forensics and comparing the DNA with a database of DNA profiles of known criminals. Forensic biologists play a crucial role in presenting their findings in court hearings, primarily working in crime labs of government agencies.
A variegated leaf has white patches. The patches occur where chlorophyll is missing from the chloroplasts in some of the cells. Chloroplasts have their own DNA, and are inherited from one parent only. How is the variegated leaf trait inherited?
A. Variegation is inherited from the male parent. The nucleus of the male gamete transforms into a chloroplast.
B. Variegation is inherited from the female parent. Only the egg cell contributes cytoplasm with chloroplasts to the embryo.
C. Variegation is inherited as a codominant trait, causing white and green leaf patches.
D. Variegation is inherited from the male parent. The male gamete contributes cytoplasm containing chloroplasts to the embryo.
Answer:
B. Variegation is inherited from the female parent. Only the egg cell contributes cytoplasm with chloroplasts to the embryo.
Explanation:
Inheritance of chloroplast DNA is example of cytoplasmic inheritance. The cytoplasmic DNA is transmitted from egg cell to the embryo. Being regulated by chloroplast DNA, the variegated leaf trait would also exhibit the maternal inheritance and would be passed from egg cell to the embryo.
Example: Presence of green, white or variegates leaves in Mirabilis jalapa follows maternal inheritance
Which of these is a reason why understanding animal behavior is important? It enables you to predict responses. It allows you to be exempt from danger. It ensures that you follow humane laws. It makes animals more prepared to obey you.
It enables you to predict responses, I think.
Understanding animal behavior aids in predicting their responses, safeguards humans from potential threats, aids in abiding by animal rights laws, and helps domesticate animals. Historically, this understanding facilitated better hunting strategies and ensured the humane treatment of animals. The ability to recognize innate (genetic) and learned (environmental) behaviors allows us to understand how animal respond to stimuli.
Explanation:Understanding animal behavior is crucial for several reasons. Primarily, it ensures a harmonious coexistence between humans and animals. For instance, if we understand their behavior, we can predict their responses, potentially exempt us from danger, aid in following humane laws, and foster obedience in domestic animals.
Historically, humans have created deep bonds with animals, like dogs, out of necessity for survival. This relationship required the understanding of their behaviors and migratory patterns. Therefore, the understanding forged better hunting strategies, avoidance of potential threats, and ensured humane treatment.
Our ability to differentiate between innate (genetically driven, independent of environmental influences) and learned behaviors (result of environmental conditioning) is critical. Grasping these behaviors allows us to comprehend the actions of animals in response to certain stimuli. For example, knowing that touching a hot stove would result in pain, is an instance of learned behavior in humans. The same behaviors are observable in animals too.
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Describe some species interactions during reef building.
Reefs are formed by calcium carbonate produced by the coral polyps. As a single polyp dies, its soft tissue decays, but the calcium carbonate cup remains.Other polyps build on top of the cup, and when they die, other polyps will build on their cups. Over time, this process creates larger and larger coral reefs.While corals are the chief architects of the reef structure, they are not the only builders. Corallin algae cement various corals together with compounds of calcium, and other organisms such as tube worms andmollusks donate their hard skeletons to the construction.
Some of the interactions that occurs during reef building is called mutualism.
What is reef building?The reef building can be defined as the activities of the organism called coral polyps which involves the secretion of layers of calcium carbonate.
There are many different species interactions that occur during reef building.
One example is mutualism, where two species benefit each other.
For example, the zooxanthellae, a type of algae, provides food to the coral polyps through photosynthesis. In return, the coral provides a protected environment and carbon dioxide for photosynthesis.
Learn more about photosynthesis here:
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what factor that contributes to cancer increases with exposure to the sun?
a) tobacco
b) radiation
c) asbestos
d) genetics
Though some bacteria cause disease and illness in humans, the majority are harmless. Some bacteria are used to aid digestion, used in preparation of certain foods, used to battle infections or used by industry. Bacteria have many important roles in nature. All BUT ONE is a role of bacteria out in the world around us.
A) Some bacteria increase the soil fertility.
B) Bacteria carry out 60% of total nitrogen fixation in natural ecosystems.
C) Bacteria are responsible for converting sunlight into usable chemical energy.
D) Bacteria decompose organic matter, by decay and putrefaction, to keep our earth clean.
the ans3wer would be a
The answer is C
Hope this helps!!!:)