How do RNA and DNA differ in the nitrogenous bases that are used?
a. Only RNA uses guanine.
b. Only RNA uses cytosine.
c. Only RNA uses adenine.
d. Only RNA uses uracil.
e. Only RNA uses thymine.
D
You might also like to view...
Endolithic phototrophic communities are MOST common in ________ environments
A) dry B) hot C) humid D) windy
You planted a seed in a pot with soil, add water, and then placed it in the sunlight in a closed chamber. After the seedling emerged, complete with two green leaves, the carbon dioxide levels decreased in the closed chamber. This indicated that was occurring.
A. alcohol fermentation B. photosynthesis C. cellular respiration D. sucrose production E. fertilization
A collection of natural bodies of earth, composed of mineral and organic matter and capable of supporting plant growth, is referred to as ________
Fill in the blank(s) with correct word
All of the following about Homo habilis is true except
A. the species was replaced by a new kind of human, which had a larger brain. B. the species coexisted with dinosaurs. C. the species lived in Africa for 500,000 years and then became extinct. D. the species was associated with tools. E. the species was small in stature.