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
Sloan [31]
4 years ago
13

Which is a purine base in dna

Biology
1 answer:
podryga [215]4 years ago
6 0

<em><u>Purines and Pyrimidines are nitrogenous bases that make up the two different kinds of nucleotide bases in DNA and RNA. The two-carbon nitrogen ring bases (adenine and guanine) are purines, while the one-carbon nitrogen ring bases (thymine and cytosine) are pyrimidines.</u></em>

You might be interested in
Harold makes a Venn diagram to help him compare and contrast mitosis and meiosis.
Stels [109]

forms diploid  cells is the answer

3 0
3 years ago
Read 2 more answers
"Synthesis of one protein cannot take place without the presence of another protein." Is this statement true or false and why? T
lbvjy [14]
<span>The third option:</span><span>This statement is true because every step in protein synthesis requires enzymes, which are nothing but proteins.</span><span>
</span>I mean if you look at rRNA which is needed to make polypeptide chains, it is 2/3 protein, and then the helices, ss binding proteins, DNA polymerase and everything in transcription is protein.
So that last option/ third option is the best
8 0
3 years ago
During the relative refractory period, _______. a. a second action potential cannot be generated, no matter how strong the stimu
Andrew [12]
<h2>Answer:  c. another action potential can be generated provided the stimulus is large enough.</h2>

Explanation:

Refractory period - (1) absolute refractory period and (2) Relative refractory period .

Relative refractory period -It is the interval immediately following the Absolute Refractory period during this period, initiation of a second action potential is inhibited but not impossible.  It is the period shortly after the firing of a nerve fiber when partial repolarization has occurred and only a greater than normal stimulus can stimulate a new response.

4 0
3 years ago
Macromolecules are also known as?
balandron [24]
Macromolecules are also known as polymer molecules
7 0
4 years ago
Read 2 more answers
Why do the stars appear to be moving across the sky
Novosadov [1.4K]

because the world is spinning at a different angle and speed as it its orbiting the sun.

4 0
4 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP!!! I NEED HELP!!!!<br><br><br><br> Not Biology Its Science!
    9·1 answer
  • What is paleobotany and what significance does this field have to our understanding of plants
    8·2 answers
  • How does your nervous system code for the difference in intensity between a gentle tap with a hammer and a hard blow with the ha
    14·1 answer
  • Before the Krebs cycle can proceed, pyruvic acid must be converted into (a)citric acid (b)glucose (c)acetyl CoA (d) NADH
    7·1 answer
  • How is prophase, metaphase and anaphase of mitosis, meiosis I and meiosis II different or the same?
    11·1 answer
  • ______ function mainly in cellular movement
    9·1 answer
  • What is an Swave shadow zone?
    15·1 answer
  • Ecosystem
    8·1 answer
  • Why is there more air pressure at sea level than on top of a mountain?
    13·2 answers
  • What do prokaryotes lack that are in eukaryote cells?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!