« previous next »

Author Question: Which of the following are nitrogenous bases of the purine type? A) cytosine and (Read 876 times)

camila

  • Hero Member
  • *****
  • Posts: 705
on: Jun 5, 2013
Which of the following are nitrogenous bases of the purine type?
A) cytosine and guanine
B) guanine and adenine
C) adenine and thymine
D) thymine and uracil
E) uracil and cytosine


Jesse_J

  • Sr. Member
  • ****
  • Posts: 282
Reply #1 on: Jun 6, 2013
Try this as the answer B. Hope it helps.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

camila

  • Hero Member
  • *****
  • Posts: 705
Reply #2 on: Jun 6, 2013
Thx! :D


« previous next »
 

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Nitrogenous wastes produced by different animal groups. Nitrogenous wastes produced by different animal groups.
This diagram shows a cross-section of a solar-type star. This diagram shows a cross-section of a solar-type star.
Epiphyseal Usually occurs through the growth plate where the matrix is undergoing calcification and Epiphyseal Usually occurs through the growth plate where the matrix is undergoing calcification and
Each allele of codominant genes is fully expressed in heterozygotes. Type A blood has A antigens on Each allele of codominant genes is fully expressed in heterozygotes. Type A blood has A antigens on
Ribonucleotides containing unusual nitrogenous bases are found in transfer RNA Ribonucleotides containing unusual nitrogenous bases are found in transfer RNA
For each chromosome type in the body, there are two copies. One is from the mother, and one is from For each chromosome type in the body, there are two copies. One is from the mother, and one is from
Video: Oogenesis Animation

For a complete list of videos, visit our video library