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
ki77a [65]
3 years ago
6

1.

Biology
1 answer:
MAVERICK [17]3 years ago
4 0

Answer:

1. Purines

2. States that DNA composition varies among species

3. Hydrogen Bond

4. Purines

<em>Answer to #2 is a little iffy </em>-- sorry

Explanation:

Pyrmidines have two rings

Purines have one ring

Complementary bases are connected by hydrogen bonds.

You might be interested in
A pigment solution contains compound A with 4 polar groups and compound B with 2 polar groups. You plan to separate these compou
Karolina [17]

The more polar A compound moves ahead of the less polar B compound.

Explanation:

The analytical process that involves the separation of colored substance or chemicals is named as paper chromatography, a replacement of thin-layer chromatography. In this method, there is the use of two solvents and rotation of paper at 90^0. It helps in isolating two complex compounds of equal polarity.

A non-polar mixture of solvent is required in the mobile phase of this method. In accordance with the retention factor of this process, the more polar compound A will go further than compound B as the solvent is non-polar.

6 0
3 years ago
Risk assessment is often used to set “acceptable” levels of toxins for the environment. Propose a concern people may have about
Hitman42 [59]
Because too much can harm wild life
8 0
2 years ago
which of the following are the building blocks of protein a. monosaccharides b.amino acids c.RNA d. starches
Crazy boy [7]
I doubt if the answer is aminoacids
5 0
3 years ago
How are the cells at the end of meiosis different from the cell at the beginning of meiosis
blondinia [14]
There are now 2 cells instead of 1
7 0
3 years ago
Double layered membrane surrounding the heart is called ____
3241004551 [841]

Pericardium or pericardial sac.

Hope This Helps!

5 0
3 years ago
Read 2 more answers
Other questions:
  • Which substance has a natural pH?
    8·1 answer
  • What color is the offspring of a purple and green flower?
    7·1 answer
  • Seth is chatting with his friends in a café. Suddenly, the power goes off, and it’s completely dark. After a few moments, he’s a
    13·2 answers
  • Which statement about the cell membrane is true?
    11·2 answers
  • Stomatas are pores on the plant leaf that control the flow of gases between the environment and the plant cells. This process he
    10·1 answer
  • Which of the following is (are) required for a lateral projection of the skull?
    8·1 answer
  • Please answer ASAP!!
    6·1 answer
  • 100 POINTS!!!! I WILL GIVE BRAINLIEST TO WHO ANSWERS CORRECTLY!!!!!!!!!!!!
    5·1 answer
  • Do boiling points always have to be high temperature numbers? Explain
    12·1 answer
  • Aunque el oxígeno no participa directamente en el ciclo del ácido cítrico, el ciclo opera únicamente cuando hay O2 presente. ¿Po
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!