The correct answer is A. Hydrogen bonds between purine and pyrimidine bases. Hydrogen bonds play a critical role in stabilizing the double-helical structure of DNA. Specifically, hydrogen bonds form between specific base pairs: adenine (purine) with thymine (pyrimidine) and guanine (purine) with cytosine (pyrimidine).
Hydrogen bonds between purine and pyrimidine bases (option A) are the primary interactions responsible for stabilizing the double-helical structure of DNA. Base-stacking interactions (option B) also contribute to stability, while electrostatic interactions (option C) and covalent bonds (option D) are important but not primarily responsible for stabilizing the double helix.
Learn more about structure of DNA: https://brainly.com/question/14537776
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What peppery of water allows it to move up through a plant?
Answer:
A. Hydrogen Bonds
design your own, you can use the Browse feature to attach and upload your document. 5. Design your own experiment based on one of your questions from question 1, above. Include the question, hypothesis, independent and dependent variables, and safety precautions. 6. What are three major branches of Earth science?
Answer:
three major branches of earth science are Geology, oceanography, meteorology.
PLEASE HELP!!!!! I NEED PERSON GOOD WITH AP BIOLOGY!! I WILL GIVE BRAINLIEST PLS!!!
Answer:
if crossing over does not occur, the products are parental gametes. If crossing over occurs, the products are recombinant gametes. Meaning they are mixed.
Explanation:
If crossing over doesn't occurs then you wouldn't really mix the 2 parental alleles so you couldn't have a genotype without mixing.
Sorry if im wrong!
why can it take soil thousands of years to form
A mouse are 380 calories worth of cherries. A fox catches it . How many calories does the fox obtain?
Answer:
The correct answer would be - 38 calories.
Explanation:
Why is it important to know the average mutation rate when using DNA comparisons to determine
how long ago lineages split?
Answer:
mutation rates can be used to design molecular clocks in order to estimate divergence times among species
Explanation:
In evolutionary biology, the substitution rates (also known as mutation rates) are used for the development of 'molecular clocks' which allow estimating the divergence times among species or among taxonomic groups. Molecular clocks can be designed by estimating the divergence rate of nucleotide sequences (either DNA or RNA) and amino acid (protein) sequences. These substitution rates can also be used to track how quickly viruses evolve (for example, in a pandemic situation).
7. A man sitting outside a restaurant on a park bench is smoking a cigarette while reading a newspaper. Which answer best describes the mutagen to which the man is exposed?
O The newspaper
The cigarette
The oxygen he is breathing
The park bench
Which configuration and conditions helped the perfume molecules diffuse better?
Answer:
Higher temperatures increase the energy and therefore the movement of the molecules, increasing the rate of diffusion
Explanation:
As the density of a solvent increases, the rate of diffusion decreases. yep i know
What is a simple diffusion?
Answer:
movement of a solute from an area of high concentration to an area of low concentration
Explanation:
True or False
a. The sinus node generates an electrical impulse.
b. The bundle of His transfers the impulse to the AV node.
c. The fiber group stimulates only the right ventricles.
d. The cardiac cycle represents one complete heartbeat.
e. Relaxation events are referred to as diastole.
Answer:
Explanation:
A-true
B-false
C-false
D-true
E- true
Which of the following statements is NOT part of the cell theory? a All cells originate from other cells. b The most basic component of any organism is the cell. c All living things are made up of one or more cells. d All cells have a nucleus and a cell membrane.
Answer:
d) All cells have a nucleus and a cell membrane.
Explanation:
Prokaryotes do not have a nucleus
If the sphincter allows any leakage from the stomach, some of this acid might move back into the esophagus, causing
1. Heartburn
2. Saliva
3. Constipation
4. Diarrhea
how can we control bacterial disease?
Answer:
Bacterial diseases are treated with antibiotics. Antibiotics work by killing the harmful bacteria or by stopping them from reproducing and spreading. Different types of antibiotics are effective for treating specific types of bacteria.
Explanation:
Answer:
by using antibiotics, antibiotics are harvested from fungi because they have a gene that kills the bacteria, i think it only works on bacterial infections, most of the antibiota said are used on animals and live stock.
Explanation:
process of gathering information about events or processes in an orderly way
Answer:
Observation is the process of gathering information about events or processes in an orderly way
Can someone please help me please
Answer:
I think so answer is D
Explanation:
I hope it helps you
Pl Mark brainlist answer
Which gland is located closest to the human brain?
A The thyroid
B The pituitary
C The adrenal
D The ovaries
Answer:
B. The pituitary gland
Explanation:
Can't be the ovaries, they're down by the hips!
Can't be adrenal glands, they're on top of the kidneys!
Can't be the thyroid, that's low on the front of the neck or something like that!
It's B, the pituitary; it's on the base of the brain.
Have a great day!
How do our social groups and social interactions impact our behavior?
Answer:
it makes us addict to fame and people would do anything to be higher up in the social groups
discuss how classification system have undergone
Answer:
The classification systems have undergone several changes with time. The first attempt of classification was made by Aristotle. He classified plants as herbs, shrubs, and trees. Animals, on the other hand, were classified on the basis of presence or absence of red blood cells.
I hope it's helpful!
Mitosis and budding are similar beu
O
Both processes are components of sexual reproduction
The offspring produced by both are genetically diverse
In both, the genetic material comes from a single parent.
O O
Both processes are more common in animals than in plants.
Answer:
animals would be your awnser you are welcome
Explanation:
keep it cool ansd answer my question if u can! :))
ILL GIVE YOU BRAINLYIST
Answer:
d
D
D
D
D
D
Explanation:
DD
D
D
D
D
D
harles Darwin had a hobby of ______________ domestic pigeons.
Answer:
breeding
Explanation:
please give brainlest need 2
Are physical characteristics of an organism not genetically passed down?
____is a restriction to the flow of electrons
Answer:
Impedance.
Explanation:
Conductors allows the flow of electrons and Impedance restricts it.
PLS HELP ILL MARK BRAILIEST
Spend one minute writing an explanation of
the FUNCTION of enzymes. YOU MUST USE
THE WORDS CATALYST, ACTIVATION
ENERGY, RECYCLABLE
Answer:
Enzymes help speed up chemical reactions in the human body. They bind to molecules and alter them in specific ways. They are essential for respiration, digesting food, muscle and nerve function, among thousands of other roles.
What is the function of an enzyme? They allow chemical reactions to occur at normal body temperature fast enough to sustain life. They reduce the activation energy needed to start a chemical reaction.
There are four steps in the process of an enzyme working. (1) An enzyme and a SUBSTRATE are in the same area. The substrate is the biological molecule that the enzyme will work on. (2) The enzyme grabs onto the substrate with a special area called the ACTIVE SITE.
There are four steps in the process of an enzyme working. (1) An enzyme and a SUBSTRATE are in the same area. The substrate is the biological molecule that the enzyme will work on. (2) The enzyme grabs onto the substrate with a special area called the ACTIVE SITE.
Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life. The enzymes in your body help to perform very important tasks. These include building muscle, destroying toxins, and breaking down food particles during digestion.
Which of the following is a macronutrient?
A) iron B) boron C) Calcium D) Manganese
Type the correct answer in the box. Spell all words correctly.
Which gas prevents the spread of fire and extinguishes it?
Blank. is a type of compressed gas that prevents the spread of fire and extinguishes it.
Help ASAP !!!
Answer:
Halon
Explanation:
I got it correct on Plato
How do environmental issues impact food production?
Answer:
hola esta en ingles alguien sabe como ponerlo em español
Subduction zones occur along
a. divergent boundaries.
b. convergent boundaries.
c. transform boundaries.
d. in the middle of plates, above hot spots.
Answer:
B, porque es la mejor respuesta de la pregunta
I need help on these questions please.