Where is the checkpoint that assesses the DNA for damage?
a. G1
b. G2
c. S
d. M
a. G1
Biology & Microbiology
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If the rate of photosynthesis stops increasing, at what concentration of CO2 does it stop increasing?
a. between 100 and 300 ppm b. between 300 and 500 ppm c. between 500 and 700 ppm d. between 700 and 900 ppm
Biology & Microbiology
Which of the following has a pH closest to that of human blood?
a. beer b. coffee c. rain water d. sea water e. oven cleaner
Biology & Microbiology
Another name for red blood cells is ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Which of the following traits are expected to be best communicated via costly signals?
a. the willingness for reciprocal grooming b. the ability to fight for a resource c. the ability to collect nesting material d. the level of infection with internal parasites
Biology & Microbiology