Deformities in frogs are thought to be related to ________
a. pesticide contamination
b. infections of a parasitic fluke
c. excess nutrients in water from agricultural runoff
d. all of the choices
d
Biology & Microbiology
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According to the serial endosymbiosis hypothesis, the ancestors of mitochondria are thought to be
purple bacteria. ____________________ Indicate whether the statement is true or false.
Biology & Microbiology
Plankton consists mainly of microscopic organisms that float in the water
____________________ Indicate whether the statement is true or false.
Biology & Microbiology
Which of the following terms is synonymous with restriction point?
a. G2 checkpoint b. G1 checkpoint c. G0 checkpoint d. S checkpoint
Biology & Microbiology
All individuals of a species express the same degree of plasticity.
a. true b. false
Biology & Microbiology