Answer:
A complimentary base pairing is how adenine can only bond with thymine and how guanine and cytosine through hydrogen bonding. It is necessary to maintain the double helix shape. Because it is opposite, that is why the DNA is that shape. It is anti parallel due to the Complementary base pairing.
Adenine can only bond with thymine and guanine with cytosine via hydrogen bonding. It's important to keep the double helix shape. Complementary base pairing causes antiparallelism.
Why complementary base pairing is necessary?Base pairs linked to a sugar-phosphate backbone form the double helix structure of DNA.
DNA is composed of four nitrogenous bases: thymine, adenine, guanine, and cytosine. Guanine and cytosine are linked by three hydrogen bonds, while adenine and thymine are linked by just two. The term for this is complimentary base pairing.
Complementary base pairing is critical for the formation of the helical helix of DNA because it permits the base pairs to be organized in the most energetically favorable manner. It is also essential for replication since it permits semiconservative replication.
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The discovery that the moon is similar in composition to the outer portions of the earth most supports the
theory.
synchronous
capture
impact
co-formation
Answer:
It most suppoet tge impact theory.
Explanation:
The his impact theory or the big splash is one of the accepted theories of tge moon and it states that the moon or luna and explain the origin of the moon that a Mars sized object planetestimal collided with the the proto Earth and the ejecta debris joined together by gravitational force which is the moon and it's orbit the Earth. The moon have similar composition to the outer portion of the Earth.
Answer:
Impact Theory
Explanation:
"The Impact Theory has two advantages over other theories about the moon's origin. First, other theories cannot explain the differences in the composition of the earth and moon. . . If Earth and a Mars-sized object collided, their iron-rich cores most likely would have merged into the earth's core. The collision would eject dust primarily from the mantles of the two bodies. This would explain why the moon's composition is similar to the composition of Earth's mantle."
The co-formation theory is not supported by that discovery because its composition should have been the same. "Although the moon is similar in age to Earth, its composition is very different. Earth is 31% iron, with most of the iron contained in the earth's core. The moon is only 8-12% iron. This difference is hard to explain if the earth and moon formed from the same material."
Therefore, it is not the co-formation theory, it is the impact theory.
Compare a lunar eclipse and a solar eclipse. For each type of eclipse, be sure to provide evidence that describes:
The alignment of the sun, moon and earth during the eclipse.
The phase of the moon that is observable during the eclipse.
How the sun’s light is being blocked on the earth and the moon.
Type your answer on a Google doc and submit
Answer:
A lunar eclipse occurs when the Earth gets in the way of the sun and blocks sunlight from hitting the moon. This makes the moon have a reddish-orange tint to it. A full moon is visible during a lunar eclipse.
A solar eclipse happens when the moon gets in between the sun and the Earth, forming a crown like ring around the moon, which is from the sun. The moon itself might not be visible, due to the angle at which it sun is hitting it at.
Which allele needs both of itself to show the phenotype
What precautions should be made to be sure that there is little chance of negative consequences from an oil spill?
Answer:
hi, here's the answer of your question
Tighten bolts on your engine to prevent oil leaks.
Replace cracked or worn hydraulic lines and fittings before they fail.
Outfit your engine with an oil tray or drip pan.
Create your own bilge sock out of oil absorbent pads to prevent oily water discharge.
hope this was helpful...
pls mark this as the brainliest answer...
Do you think there is a relationship between the amount of rainfall and the resources available to the buffalo to help them survive? If so, what evidence supports your conclusion?
Answer:
Which of the following equations are balanced correctly?
2Ag2O → 4Ag + O2
Zn + HCl → ZnCl2 + H2
Cu + H2O → CuO + H2
2C4H10 + 13O2 → 8CO2 + 10H2O
Explanation:
It may be harmful when people compete to see who can hold their
breath the longest under water. Without oxygen, brain cells
Answer:
tend to not get enough oxygen which may lead to severe brain damage and our brains can get Celebral Hypoxia which includes symptoms such as confusion and loss of coordination
Explanation:
When the brain cells receive less oxygen as required by the brain ; The brain suffers a severe damage due to brain hypoxia.
When one holds his/her breath under water the amount of oxygen flowing into the brain cells is cut off and if the oxygen supply is not restored within 5 minutes, the brain cells will start dying off which will result to severe brain damage and eventual death .
Hence we can conclude that When the brain cells receive less oxygen as required by the brain ; The brain suffers a severe damage due to brain hypoxia .
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Why would humans not be able to repair and reproduce without bacteria short summary please helpp
FIRST PERSON TO ANSWER GETS BRANLYSEST After Hunter drank a glass of milk, sugar levels in his blood increased. This stimulated the hormone insulin to be released. Insulin helped the sugar move from his blood into cells, so his blood sugar levels decreased. Which statement explains what happened next? Positive feedback caused his pancreas to stop secreting insulin. Negative feedback caused his pancreas to stop secreting insulin. Negative feedback caused his pancreas to produce more insulin. Positive feedback caused his pancreas to produce more insulin.
Answer:
The correct answer B
When the body gets the glucose, the glucose in the blood increase then the hormone insulin is released so that the glucose from the blood can be transferred from blood into the cells of the body.
The release of hormone insulin is a positive feedback.
Once the glucose is transferred into the cells of the body then the negative feedback starts acting that stops the secretion of insulin from the pancreas.
What will happen next is that negative feedback would cause his pancreas to stop secreting insulin.
The maintenance of relatively constant internal body processes depends largely on negative feedback.
Negative feedback mechanisms ensure that setpoints are returned.
Hence, whatever causes setpoints to be breached is reversed or removed totally.
In this case, the continuous secretion of insulin will further lower the blood sugar level and causes the setpoint to be breached further. Thus, the actuator (insulin) has to be removed.
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How are drug resistant strains of HIV Produced?
Answer:
If a strain of HIV is cloning itself and the patient is taking antiretroviral medication, the strain evolves around that and becomes immune to the medication. This happens a lot.
Explanation:
Why is MEIOSIS important? Select all that apply
Each new cell will have an exact copy of chromosomes
Each new cell will have half the number of chromosomes
Each new cell will have double the number of chromosomes
Meiosis results in the formation of a sex cell (egg or sperm)
Meiosis allows the body to make new skin, muscle, and bone cells
The shortest day of the year in Canada happens during _____.
March
September
June
December
can you guys help me asp
The shortest day of the year in Canada happens during December 21.
HELP PLS!!!!!!!!!!!!
A good environmental decision _____.
has no ecological costs
discounts the environmental costs
should have more benefits than costs
has only environmental benefits
ILL GIVE 40 POINTS TO WHOME OVER IS RIGHT
HELPPPPPPPPPPPPPP MEEEEEEEEEEEEEEEEEEEEEEE
find the number of atp molecules used in the beginning of glycolysis
Answer:
uses 2 atp
Explanation:
uses 2 atp, creates 4 atp and 2 nadh
Human actions cannot change Earth’s atmosphere. true or false? with explaining please I will award brainiest
Answer: false
Explanation:
there are many things humans can do to help the atmosphere. For example, humans can drive cars less, pollute less, and eat less steak. i'm not kidding. Most air pollution comes from methane from cow farts since there are so many cows in the world. (Over 2 billion !!!)
hope this helps
HAVE great DAY ^-^Molly wants to perform an experiment that shows how the conditions under which a tomato plant grows will affect the size of its fruit. What should Molly do first?
She should measure the size of her tomatoes.
She should determine the variable to be tested.
She should read other researchers' results online.
She should record her data in her notebook.
Answer:
On March 3, 1940, Aunt Molly Jackson led off the evening at the Forrest Theater. The wife of a leading coal striker, she’d been organizing the miners and writing songs about the abysmal conditions of the Kentucky mines until death threats forced her to relocate to New York City.
Which statement best summarizes the connection between Jackson’s life and her music?
She was asked to perform first because her songs were better than the other musicians’.
She started the performance because she was the wife of a leading coal striker.
She relocated to New York City because her songs led to death threats against her.
She hoped her songs would inspire miners to continue to work in the mines despite the conditions.
Explanation:
Please help ASAP for 10pts
BRAINLIEST WILL BE GIVEN PLEASE! ANSWER THIS QUESTION!!
Answer:
B
Explanation:
First off energy cannot be created or destroyed, so the eliminates A and D. It also didn't gain any so that eliminates C.
So it would be B
I need help ASAP please
Why is the point of attachment of the frog's tongue considered to be advantageous?
Answer:
Frog's tongues are attached to the front of their mouths rather than at the back like humans.
Explanation:
This is an advantage because most frogs eat flies and insects and the like. Because they can flick their tongue a long way out they are able to catch food more effectively. This is an example of an adaptation.
Which factors add to the greenhouse effect and are caused by human activities? Select two options. (This question requires Two answers)
A.a decrease in the amount of dust in the atmosphere
B.a decrease in the amount of water on Earth’s surface
C.an increase in gases in the atmosphere that absorb heat
D.an increase in surfaces that radiate energy into the atmosphere
E.an increase in the amount of solar radiation that reflects into space
Answer:
There is overwhelming evidence that human activities, especially burning fossil fuels, are leading to increased levels of carbon dioxide and other greenhouse gases in the atmosphere, which in turn amplify the natural greenhouse effect, causing the temperature of the Earth's atmosphere, ocean, and land surface to.Human activities contribute to climate change by causing changes in Earth's atmosphere in the amounts of greenhouse gases, aerosols (small particles), and cloudiness. The largest known contribution comes from the burning of fossil fuels, which releases carbon dioxide gas to the atmosphere.
Explanation:
EXAMPLES: Burning of Fossil Fuels: Fossil fuels like coal, oil and natural gas have become an integral part of our life. ... Deforestation: Forests hold a major green area on the planet Earth. ... Increase in Population: Over the last few decades, there have been huge increase in the population.This was simulation. What are some variables that this peppered moths simulation does not address?
Answer:
The simulation only shows how a population can change overtime in response to the changes in the environment. During the industrial revolution, one particular phenotype of moths had an advantage over the other and hence, was subjected to natural selection. What this simulation does not tell us is the causality and correlation aspect of the change that occurs in the moths. Correlation does not equal causation, and the simulation does not shed any light on these variables in this case.
Explanation:
Hope that answers the question, have a great day!
Select the correct answer.
Which ocean or oceans have the International Whaling Commission declared as whale sanctuaries?
A.
Pacific Ocean
OB. Atlantic Ocean
c.
Pacific and Atlantic Ocean
OD. Indian and Southern Ocean
E. Arctic and Southern Ocean
Reset
Next
Answer:
I would choose D. Indian and Southern Ocean
Explanation:
The Indian Ocean Sanctuary was established by the IWC in 1979. To the south it borders the Southern Ocean Whale Sanctuary
What are the sources of coastal pollution?
Answer:
Point sources include combined sewer overflows, concentrated animal feeding operations, sanitary sewer overflows, storm water, oil spills, industrial discharges; discharge from boats, and dumping of ballast water from ships.
Explanation:
A keystone species is a living thing, plant or animal, that is crucial to the workings of the food web
Answer:
true
Explanation:
A_____ can rush downhill as a huge mass of soil,water,and rock,leaving a bare scar in the hillside
Answer:
Landslide.
Explanation:
Answer:
landslide
Explanation:
Before mitosis begins, which happens before the nucleus starts dividing?
The DNA replicates.
The cytoplasm separates.
The sister chromatids separate.
The homologous chromosomes cross over.
Answer:
The DNA replicates.
Before mitosis begins, the DNA replicates. During the S phase of interphase, which precedes mitosis, the DNA in the nucleus undergoes replication, resulting in the formation of identical sister chromatids.
This ensures that each daughter cell produced during mitosis receives a complete set of genetic information.
After DNA replication, the cell enters the mitotic phase, during which the nucleus divides and the replicated DNA is distributed to the daughter cells.
The cytoplasm separates during cytokinesis, which occurs after mitosis and is not directly related to events before nucleus division. The separation of sister chromatids occurs during anaphase of mitosis, not before the nucleus starts dividing.
Thus, the process of homologous chromosomes crossing over occurs during meiosis, not mitosis.
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Which of the following are functions of protein molecules in an animal?
1. Protein molecules help cells carry out many of their functions, and they are part of body structures such as hair and nails.
2. Protein molecules help cells carry out many of their functions, but they are not part of body structures such as hair and nails.
3. Protein molecules do not help cells carry out many of their functions, and they are not part of body structures such as hair and nails.
4. Protein molecules are part of body structures such as hair and nails, but they do not help cells carry out many of their functions.
Answer:
1. Protein molecules help cells carry out many of their functions, and they are part of body structures such as hair and nails.
Explanation:
Proteins are one of the four major biomolecules in living systems. Proteins play a major role in the physiological, structural and metabolical processes in living organisms. They help cells carry out many functions when they acts as enzymes and hormones. Enzymes and hormones are proteinous chemical substances that catalyzes and speedens up physiological reactions respectively.
In addition, proteins are major structural components in animals. For example, keratin is a protein that makes up the hair and nails of animals. They provide structural support in parts of the body they are found.
Which parenting behavior does not increase the probability that offspring will survive?
Choose the correct answer.
A) producing milk to feed young
B) guarding young from predators
C) protecting young from cold weather
D) abandoning young before eggs are hatched
Answer:
The answer is D. abandoning young before eggs are hatched.
Explanation:
PLEASE HELP I WILL BE GIVING THE BRAINLIEST AND 15 POINTS!!!!!!!!
The woolly mammoth was a relative of elephants that lived in the far north. There is much debate in the scientific community about what caused the extinction of mammoths. Climate models show that changing weather patterns stressed mammoth populations. Hunting by humans may have also reduced populations. The youngest mammoth remains on a continent are 10,000 years old.
Why did natural selection not cause mammoths to evolve new adaptations in response to environmental changes instead of becoming extinct?
A. There were too many offspring in the population.
B. There were too many different traits in the population.
C. There was not enough competition in the population.
D. There was not enough variation in the population.
Answer:
Explanation:
D
All living organisms are made up of cells. Cells are the basic units of life. In complex living organisms, cells are organized into tissues, tissues are organized into organs, and organs are organized into organ systems. What characteristic of life does this information represent?
A.
Life tends to be chaotic and random.
B.
Life can be arranged in a structural hierarchy.
C.
Life does not demonstrate order in its systems.
D.
Life is composed of only complex organisms.
Answer:
C
Explanation:
