1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mezya [45]
3 years ago
8

What accounts for the uniform diameter of the DNA molecule? A.The two sides of the DNA molecule are held together by hydrogen bo

nds.
B.A purine always bonds with a pyrimidine.
C. One side of the DNA molecule has an unconnected 5' phosphate group and the opposite end has an unconnected 3' hydroxyl group.
D. The 3' carbon of one deoxyribose and the 5' carbon of another deoxyribose bond together.
E.The alternating sugar and phosphate backbone coils around the outside of the helix.
Biology
1 answer:
stepan [7]3 years ago
8 0

Answer:

B. A purine always bonds with a pyrimidine.

Explanation:

DNA is a polymer of deoxyribonucleotides each of which has a nitrogenous base, a pentose sugar and phosphate group. There are two types of nitrogenous bases present in DNA. Adenine and guanine are the purine bases and have two rings in their structure while the cytosine and thymine are the pyrimidine bases with a single ring structure.

A purine base of one DNA strand always pairs with the pyrimidine base of another DNA strand. Adenine (purine) makes two hydrogen bonds with thymine (pyrimidine) while guanine (purine) makes three hydrogen bonds with cytosine (pyrimidine). The pairing of a purine with a pyrimidine base keeps the diameter of a DNA double helix uniform throughout the length. For instance, the diameter of B-DNA is around 20 angstrom.

You might be interested in
Can anyone answer this its urgent...<br>srrry if the cropping is bad<br>​
marusya05 [52]

Answer:

The answer for this question is the ureotelic

7 0
2 years ago
Read 2 more answers
Identify the four principles of natural selection
zmey [24]
Variation- Heritable differences that exist in every population are the basis for natural selection
Overproduction- Competition for resources for resources
adaptation- A trait that helps an organism survive and reproduce
decent with modification- Natural Selection will result in species with adaptation that are well suited for survival and reproduction.
8 0
2 years ago
You respond to a call for a patient in active labor with her second child. Your interview with the patient shows that she is 40
WARRIOR [948]

Answer: Prepare to deliver the baby​ on-scene.

Explanation:

Birth crowning is a condition occurs during the period of gestation. In this baby's head starts emerging after each contraction from the birth canal after the second stage of labor. In this process the uterine muscle relaxes and tightens to help the newborn to come out of the birth canal.

According to the given condition, a preparation of delivery of the baby on the scene is preferred to avoid the negligence and delay. To protect the life of mother and child early action is required.

7 0
2 years ago
If a single mutation turns off the growth of some pairs of legs within and organism, what's most likely effected
Elina [12.6K]

Hi Mark


The answer is : D

A hox gene likely affected


I hope that's help:)

7 0
3 years ago
Why is it important for each daughter cell to contain information identical to the parent cell?
zavuch27 [327]
For success ful new generation
4 0
3 years ago
Other questions:
  • Excessive loss of bone volume and mineral content associated with aging is
    12·1 answer
  • What is required to begin asexual reproduction?
    11·2 answers
  • What is the term from reaction in which a substance gains electrons?
    11·1 answer
  • 1. Which of the following is NOT a true property of water? * 1 point
    10·1 answer
  • What are homologous structures in different species evidence of?
    12·1 answer
  • The state of maintaining a stable internal environment regardless of changing external conditions is called
    12·1 answer
  • 2. Identify one simple machine used at your home and explain how it makes your work easier​
    12·2 answers
  • Hey i’ll give brainliest please help
    10·1 answer
  • A person who has very toned muscles likely has.... A.extra nerve cells. B. lots of digestive enzymes. C.tightly packed myofibril
    10·1 answer
  • Convert the following non-scientific questions to questions that can be answered by science.1. Should commercial use of our ocea
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!