Answer:
Topoisomerases relax the positive supercoil of the plasmid when histones bind, thereby allowing for more histones to bind.
Explanation:
Plasmids are closed-circular DNA. Unlike linear DNA which can bind a greater number of histone molecules due to greater freedom of rotation, when plasmids binds to a histone molecule, a negative supercoil is introduced in the plasmid. However, since the plasmid is closed and the DNA is not broken, a compensatory positive supercoil in the unbound region of DNA is introduced. This limits further binding of histone molecules to the plasmids.
However, with the introduction of topoisomerases, they relax the positive supercoils, thereby stabilizing the negative supercoil. Further binding of histone molecules are initiated with the formation of negative supercoils and relaxing of positive supercoils result in more histone molecules bindingd to the plasmids.
Which sentence describes a species whose numbers are increasing?
A. The species is moved from the endangered list to the extinct list.
B. The species is placed on the endangered species list.
C. The species is moved from the endangered list to the threatened
list.
O D. The species is moved from the threatened list to the endangered
list.
People are less accurate in correctly perceiving images of their own racial group than those of other racial groups.
Please select the best answer from the choices provided
The answer is FALSE!!
Answer:
False
Explanation:
Edge 2020
Answer:
False is the correct answer just took the test
Explanation:
Peace and love
what structure is found in both plan and animal cells A chlorplast B large vacuole C cell wall D Ribosome
Answer:
D Ribosome
Explanation:
Ribosomes make proteins which is needed in plant and animal cells
Answer:
Ribosome
Explanation:
Cell wall only in plant cell, chloroplast only in plant cells also large vacuole
Which type of fruit is an apple
Answer:
an apple is a one fruit which are members of the plant family rosaceae. this are fruits that have a core of several small seeds surrounded by a tough membrane.
14. Describe two economic benefits that resulted from the wolf reintroduction.
Answer:
Reintroduction would create a significant number of jobs related to environmental and wildlife population monitoring and evaluation. These jobs would be long-term and would increase in number each year as the wolf population grows. These jobs include: scientists, wildlife and range technicians, and wildlife rangers.
Explanation:
Answer:
Reintroduction would create a significant number of jobs related to environmental and wildlife population monitoring and evaluation. These jobs would be long-term and would increase in number each year as the wolf population grows. These jobs include scientists, wildlife and range technicians, and wildlife rangers.
Explanation:
You may want to change it up a bit, if you're copping and pasting.
What is the most likely outcome of a disease that kills off the long-spined sea urchins on a reef?
ALOT OF POINTS plus marking people as brainlist
Answer:
b.) our atmosphere is now rich in oxygen gas
Explanation:
when plants do photosynthesis the plants produce oxygen and then our planet gets more and more oxygen.
How would you produce a 10^1 dilution of a 3ml bacteria sample using the entire 3mL volume
Suppose your professor handed you a test tube with 2.0 mL of an E. coli broth culture in it and told you to make a 10^-1 dilution of the entire culture. Explain how you would do this. Show your calculations.
This should help!!
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION THANK YOU!!
Answer:
D
Explanation:
It seems the most likely out of all of them.
The ban on hunting animals is an example of
Succession
Tropic cascade
Custodial management
Manipulative management
I think it is D
Answer:
It is B. Because: Trophic cascade, an ecological phenomenon triggered by the addition or removal of top predators and involving reciprocal changes in the relative populations of predator and prey through a food chain, which often results in dramatic changes in ecosystem structure and nutrient cycling.
Explanation:
Answer:
C. Custodial management
Explanation:
Custodial management = protecting wildlife/habitat and minimizing human interaction.
Massive colonies of zebra mussels cause problems because
Answer:
Zebra herds, I'd guess
Explanation:
Imagine you are a carbon atom. Describe your journey through the carbon cycle be sure to include and explain the key processes in the cycle
(include the following in your answer)
Describe how the carbon atoms in CO2 absorbed via plant photosynthesis provide the carbon atoms for all of the new carbon compounds a plant produces and uses to build its cells and tissues and to burn for energy.
Explain how carbon compounds are transformed in five chemical reactions that are critical to the carbon cycle: photosynthesis, cell respiration, decomposition, biosynthesis and combustion.
Explain how carbon moves from one Earth System sphere (neighborhood) to another
Explain how carbon changes as it moves from one part of the carbon cycle to another
Describe where carbon is stored
Answer:
The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Since our planet and its atmosphere form a closed environment, the amount of carbon in this system does not change.
1. Photosynthesis
Photosynthesis Process
Plants pull in carbon dioxide out of the air through photosynthesis. Even though carbon dioxide makes up less than 1% of the atmosphere, it plays a major role for living things.
With CO2 and H2O in the atmosphere, photosynthesis produces sugars like glucose. This is the plant material that plants synthesize on their own.
If you have the right conditions, this process can repeat for centuries. Not only does photosynthesis pulls carbon dioxide out of the atmosphere, but it’s fuels all living things as a source of energy.
2. Decomposition
Nutrient Cycle
By mostly using sunlight, water and carbon dioxide, plants can grow. In turn, animals consume food for energy using O2 and giving off CO2. Alternatively, they die, decay and decompose repeating for millions of years.
Decomposition is the process of breaking down plants. Over vast periods of time, layers of sediment build on each other. Because of the pressure and heat from within the Earth’s crust, this generates fossil fuels. Much of this happened during the Carboniferous Era.
For example, coal, oil and natural gas (methane) are some of the common fossil fuels. Over the long-term, the decomposition of dead matter generates these fossil fuel products.
Anaerobic decomposition involves bacteria breaking down organic matter such as glucose into CO2 and methane (CH4). The nutrient cycle recycles inorganic and organic material in soil through the process of decomposition. Then, it goes back again through the same process again.
3. Respiration
Cellular Respiration
You and I are both made of carbon. We consume plants. But we also breathe in the air, which has carbon in the form of carbon dioxide.
Animals rely on plants for food, energy and oxygen. Our cells require oxygen to break down the food we consume through cellular respiration.
Once consumed, carbon dioxide is released into the atmosphere because of cell respiration. In turn, this CO2 produced from respiring cells can be used in photosynthesis again.
In other words, the plants use solar energy to break apart that same carbon dioxide in the air. Through photosynthesis, it uses that same carbon for plant material in turn releasing oxygen again.
4. Combustion
Gas Combustion
Our cars use the energy released by burning fossil fuels. And carbon is also a pollutant as carbon dioxide.
We extract fossil fuels, combustion involves burning them to release energy. But a by-product of combustion is that it releases carbon dioxide back into the atmosphere. And too much CO2 increases the greenhouse effect.
And as we deplete our oil reserves adding CO2 into the air daily, this affects the carbon cycle with an imbalance of oxygen and carbon. Carbon dioxide is one of the greenhouse gases contributing to climate change.
But there is a limit for how much fossil fuels we can extract. Over millions of years, phytoplankton resting on the ocean surface photosynthesizes and takes in CO2.
Using sunlight, it creates a molecule called glucose (C6H12O6) and sinks to bottom of the ocean. Humans discovered these fossil fuels beneath the ocean. We started to drill the ancient plankton, which over millions of years ago, became the oil we use today.
Explanation:
HOPE IT HELPS : )
What is the event called when a population travels to another area to live and reproduce?
selection
mutation
evolution
nigration
Answer:
Explanation:
migration
The Correct Answer:
migration
a sea arch is formed through wave erosion
T or F
Answer:
True
Explanation:
Mark Brainliest if correct
A sample of polyN ethylmethacrylamide (PNEMAM) has a LCST of 58C. A mixture of linear PNEMAM with water when implanted inside the body will be a:_________
a. clollapsed gel
b. solution
c. fully expanded gel
d. inverse micelle
e. semi-IPN
Answer:
The correct answer is - c. fully expanded gel
Explanation:
PolyN ethylmethacrylamide (PNEMAM) is a negative temperature based hydrogel, these type of gels have LCST or lower critical solution temperature. Under the LCST this polymer get swollen and above the LCST it contracts.
In the question, it is mentioned that this hydrogel has a LCST of 58-degree celsius which is implanted in the human body that normally has a temperature of 37-degree celsius which is below the LCST so the polymer would expand or swell.
Food chains show energy transfer between organisms.The size of a food chain can vary, yet there is a limit to the number of levels that a food chain can reach. Why is there a limit to the number of levels that a food chain can reach?
Sugar maple (Acer saccharum) is a tree species that is found throughout the northeastern United States in higher-elevation sites without sandy soils. What can you conclude about the distribution of sugar maples in terms of their geographic range and realized niche?
Acer saccharum, the sugar maple or rock maple, is a species of flowering plant in the soapberry and lychee family Sapindaceae.It is native to the hardwood forests of eastern Canada, from Nova Scotia west through southern Quebec, central and southern Ontario to southeastern Manitoba around Lake of the Woods, and the northern parts of the central and northeastern United States.
PLEASE HELP! Predict one potential explanation for why the number of H+ passing through ATP synthase decreases in this scenario.
In eukaryotes, aerobic respiration relies on a gradient where H+ are concentrated between the inner and outer mitochondrial membranes. This gradient is used as an energy source when H+ flow through the channel protein, ATP synthase. If the mitochondrial membrane is suddenly exposed to heat, the number of H+ flowing through ATP synthase decreases.
Answer:
In chemiosmosis, the energy stored in the gradient is used to make ATP. ... Electrons are passed from one member of the transport chain to another in a series of redox ... I to IV. In eukaryotes, many copies of these molecules are found in the inner ... The transport chain builds a proton gradient across the inner mitochondrial
Explanation:
A large object orbiting a star
Answer:
It is called planet
The diagram below represents a biological process. Which set of molecules is best represented by letters A and B?
Answer:
A: carbon dioxide and water
B: glucose
Explanation:
The diagram below represents a biological process. The molecules representing the letters A and B are:
A: carbon dioxide and water
B: glucose
What is a biological process?A biological process is an action that an organism does to accomplish a particular goal that is written into its genetic code. The outcome or final state of biological processes is frequently used to characterize them, for example, the biological process of cell division produces two daughter cells (a divided cell) from a single parent cell.
The primary form of sugar in the blood, glucose, serves as the body's cells' main source of energy. The body can produce glucose from other substances or from the foods we ingest.
Due to food digestion and oxygen inhalation, the organism's body exhales carbon dioxide back into the environment.
Therefore, the molecules representing the letters A and B are:
A: carbon dioxide and water
B: glucose
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For example, red flowers and white flowers would breed ____________ flowers unless ____________ in the genetic material existed.
Answer:
For example, red flowers and white flowers would breed pink flowers unless instability in the genetic material existed.
Note: The complete answers are provided in the explanation below
Explanation:
Prior to Mendel's work on genetics using pea plants hypotheses were proposed to explain heredity.
One of these hypotheses supported the blending concept of inheritance.
Most breeders acknowledged that both sexes contributed equally to offspring traits to create offspring with intermediate traits.
For example, red flowers and white flowers would breed pink flowers unless instability in the genetic material existed.
However, this model of inheritance didn't account for the presence of non-intermediate traits that exist in populations
1. you have a bilayer with equal amounts of saturated and UNsaturated phospholipids. After testing the permeability of this membrane to glucose, you increase the proportion of saturated phospholipids in the bilayer. What will happen to the membranes permeability to glucose?
a. permeability to glucose will increase
b. permeability to glucose will decrease
c. permeability to glucose with stay the same
d. you cannot predict the outcome. You simply have to make the measurements.
2. Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large, complex, undigested lipids. Which cellular organelle must be NONfunctioning in this condition?
a. the rough endoplasmic reticulum
b. the golgi apparatus
c. the lysosome
d. the mitochondrion
Answer:
The correct option for question 1 is
Option A.
permeability to glucose will increase
2. Correct option is C.
The lysosome.
Explanation:
1. increasing the proportion of saturated phospholipids in lipid bilayer will increase the permeability of glucose because normally the phospholipid bilayer is impermeable to most water insoluble substances like glucose, therefore to increase glucose permeability by the membrane saturated phospholipids need to be increase in the bilayer becayse saturated phospholipids tails have no double bonds and they are straight making it permeable to glucose.
2. The cellular organelles non functioning in Tay-Sachs disease is lysosome because lysosome is an organelles found in eukaryotic organisms that contain the digestive enzymes which help to digest food. In the case of Tay-Sachs, her lysosome is not functioning that is why there is accumulation of large complex undigested lipids because the lysosomes is malfunctioning and digestion cannot take place.
Which profile view matches Topographic Map #5?
Answer:
F.
Explanation:
Because it has the right side sticking up in both so therefore your answer would be F.
Answer:
See below
Explanation:
Based on just observing it. I can say that Topographic Map #5 matches profile view F.
How do meiosis I and II contribute to genetic variation?
Meiosis I and II contributes to genetic variation by:
Giving each daughter cell one chromosome from the chromatids which remains after Meiosis IMeiosis I and II are both processes of cell differentiation where two cells divide to produce four daughter cells which contain genetic information.
Meiosis I starts with one diploid parent cell and after its division, it gets two haploid daughter cells which have the same amount of chromosome.
Meiosis II makes use of the chromatids that are left after the cell division in Meiosis I as the daughter cells get DNA.
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The diagram represents the water cycle. Which arrow includes the process of transpiration?
a. arrow 1
b. arrow 2
c. arrow 3
d. arrow 4
Answer:
b. arrow 2
Explanation:
Arrow 2 includes the process of transpiration. During transpiration, water is lost from plant surface and the stomata as a vapor. This water is taken into the atmosphere where it cools and condenses.
The arrow 2 signifies evaporation. Evaporation is a phase change from liquid to gasThis is an important aspect of the water cycle also. Surface water, water from plants and animals are evaporated They are changed into vaporAs they reach the atmosphere, they begin to cool.Consider the following food chain… Grass, beetles, raccoons, and coyotes live in a forest ecosystem. When a raccoon eats a beetle, the matter that made up the beetle’s body is transferred to the raccoon, and the total amount of matter in the ecosystem…
The total amount of matter in the ecosystem basically 'remains the same. The matter is recycled in the ecosystem, so its total amount is not changed'.
What do you mean by ecosystem?
An ecosystem is a community of living organisms (plants, animals, and microbes) and their physical environment interacting as a system. The complex network of interactions between the living organisms and their environment, including their interactions with one another, is known as an ecosystem.
Matter is a finite resource, meaning that it cannot be created or destroyed. When a raccoon eats a beetle, the matter that makes up the beetle's body is transferred to the raccoon, but it does not leave the ecosystem. The matter is simply being recycled and reused in the ecosystem. This means that the total amount of matter in the ecosystem remains the same, even though the material is being used by different organisms.
To know more about ecosystem,
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Katie has red hair, green eyes, and freckles just like her mother. Her father has brown hair, brown eyes, and no freckles. Why does Katie look more like her mother than she does then her father?
A. Because Katie’s father is older than her mother.
B. Because Katie’s father doesn’t have any freckles.
C. Because Katie’s inherited more traits from her mother than her father.
D. Because daughters always resemble their mothers more than their fathers.
Aaron keeps texting throughout his study session. Why should he minimize such distractions?
Answer: he should turn off his phone and put it in his backpack
Explanation: doing so would keep it out of reach and not feel the need to grab it whenever it chimes or rings
In general, is it easier to determine the age of a young person (15 yrs old) or someone who is older (40
yrs)? Explain your answer,
Answer: It is probably easier with someone who is younger, because you could guess somebody who is older to be 50 when they are 45 when you could easily guess a teenager's age.
Explanation:
When does exponential growth of a population occur?
A. When the ecosystem has biodiversity
B. When a population crash is occurring
C. When needs exceed resources
D. When the population is below carrying capacity
SUBMIT
Answer:
It’s D
Explanation:just took the test on ape
