Most of the ultraviolet radiation reaching the upper atmosphere is absorbed by
A. CFCs.
B. water vapor.
C. ozone.
D. carbon dioxide.
E. nitrogen.
Answer: C
Biology & Microbiology
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List the six most abundant elements found in living organisms. For each of the following, indicate the biologically important molecules in which they are most important
Any help with this list would be great, thank you.
Biology & Microbiology
In this figure, which of the following are composed primarily of proteins?
a. A and B b. B and C c. B and D d. A and D
Biology & Microbiology
Which of the following cell components is not directly involved in synthesis or secretion?
a. ribosome b. rough endoplasmic reticulum c. Golgi body d. smooth endoplasmic reticulum e. lysosome
Biology & Microbiology
Most of the fresh water in the world is used for
A. drinking. B. bathing. C. industrial needs. D. watering lawns. E. irrigation.
Biology & Microbiology