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
True [87]
3 years ago
15

What is the main difference between purines and pyrimidines?

Biology
1 answer:
zubka84 [21]3 years ago
6 0
Purines are two ringed structures
pyrimidines are single ringed structures
You might be interested in
Way group behavior can help a human community survive
Serggg [28]
<span>One way social behavior increases survival in humans is the increased security from attackers and other physical threats. Another is that social cooperation increases the likelihood for success in the gathering of required resources for survival such as food. It also increases the chances of survival of offsprings due to the cooperative raising of the kids within the social grouping.</span>




7 0
3 years ago
Read 2 more answers
Phagocytosis is a type of ________.<br><br>​
pentagon [3]
The answer is endocytosis
3 0
2 years ago
Read 2 more answers
Which two species are likely to have the most similar dna base sequences?
saul85 [17]
Based on the attached Image;
The two species that are likely to have the most similar DNA base sequences are C and D. 
An evolutionary tree or a phylogenetic tree, like the one shown on the image is used to indicate which ancestors gave rise to which descendants. The tree represents the evolutionary relationships among a set of organisms or groups of organisms, called taxa. The tips of the tree represents groups of descendant taxa and the nodes represents the common ancestors of these descendants. 

5 0
3 years ago
Test in which leukocytes are stained and counted under a microscope to see numbers of mature and immature forms: Question 19 opt
vesna_86 [32]

Answer:

Red blood cell morphology

Explanation:

hope this help

4 0
3 years ago
Which factors affect soil quality?
lesya692 [45]

Answer:

All of the above

Explanation:

When we talk about soil quality we talk about soil components.  The chemical composition is an active part of the soil components because it has Nitrogen, Ca+, Oxygen and other molecules that affects the interaction among the soil and its environment. The living organisms interacts with the molecules in the soil changing constantly their concentrations that modify the pH and the soil quality. All of these changes accumulation tell us how the soil has changed through the time, also can give us information to predict how soil will change, this is known as history of the soil.

To summarize the chemical composition affects directly the soil quality, the history of the soil are all the changes that it has suffer in its composition through time so it define the actual soil quality and the living organisms interact with the chemical composition changing it constantly and giving new qualities to the soil.

8 0
3 years ago
Other questions:
  • Any electricity charged object crates an electric field.Walking across carpet In wool socks can create charge.This observation i
    11·1 answer
  • Jen and jack are seated in the same row in an airplane but across the aisle from each other. if the information they exchange ac
    11·1 answer
  • Life is organized in a hierarchical fashion. Which of the following sequences correctly lists the levels of life from simple to
    7·1 answer
  • Which endocrine gland is part of both the nervous and the endocrine systems?
    14·2 answers
  • The movement of a plant's leaves to face the sun as it moves across the sky is an example of
    14·2 answers
  • Which job must enzymes do before replication can begin?
    10·1 answer
  • Is the process of bringing nutrients into the bloodstream while<br> is getting rid of waste *
    11·2 answers
  • organs are made of a series of tissues that work together to perform a similar function the heart is the major organ belonging t
    9·1 answer
  • Which statement is true about genetic information? A gene is a section of DNA and is found on a chromosome in the cell's nucleus
    9·1 answer
  • 3. Bacteria and fungi are decomposers, and are responsible for
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!