Chargaff determined that DNA from any source contains about the same amount of guanine as:
a. uracil.
b. thymine.
c. adenine.
d. cytosine.
e. guanine
d
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What determines the structure of a protein?
A) the number of amino acids it contains B) the sequence of the amino acids it contains C) the function of the nucleic acids it contains D) the number of fatty acids it contains
Which of the following is most susceptible to destruction by phagocytes?
a. Chlamydophila psittaci b. Streptococcus pneumoniae c. Streptococcus pyogenes d. Influenza virus e. Histoplasma capsulatum
Which is an example of a clumped distribution of a population?
A. Antelope travel in herds. B. Multiple species join each other at the waterhole to drink. C. Two male hummingbirds have a confrontation on the border between their territories. D. A tree species releases a poison to defend the soil around its roots, resulting in trees spaced evenly like a grid.
Irrigating land can lead to a buildup of salt in the soil called ________
Fill in the blank(s) with correct word