The purines are:

adenine and guanine

cytosine and guanine

cytosine and thymine

ribose and deoxyribose

Vsuppose that for an organism, 2n = 8. how many chromosomes do the organism's gametes contain?

This has been reduced in size usually over time and has less important functions in some related organisms than in others

Which statements describe color and streak? Check all that apply. - streak is the color of a minerals powder.

What does the author mean when he refers to reverse engineering the brain? a. studying brain activity by observing a person's actions b. studying the electrical impulses of the brain and then comparing them to an average circuit board c.

Discoveries and ideas generated in one experiment can be used for another experiment. true or false

How are three different types of consumers alike and how are they different

What do a door and a venus flytrap leaf have in common

Where would be the best place to find an alpine glacier A) Antarctica B) Greenland C) the Himalayas D) the North Pole

The Sun is A. a very small star. B. a medium-sized star. C. the largest star in the universe. D. the same size as all the other stars.

6. The blood component that has the greatest affinity for oxygen is the a) Lymphocyte" (b) Leucocytes (c) Erythrocytes (d) Thrombocyte