What two abiotic factors are considered to most affect organisms?
a. fire and water
b. the atmosphere and fire
c. temperature and fire
d. temperature and water
e. climate and fire
d
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A person who is homozygous for a mutation of the phenylalanine hydroxylase gene
A. can lead a normal life if the environment is controlled. B. cannot give blood. C. will always develop mental retardation in early infancy. D. will require phenylalanine supplements throughout life. E. Two statements are correct. They can lead a normal life if the environment is controlled by taking phenylalanine supplements.
When a predatory female firefly sees the flash from a male of a different species and replies as though she was a female of his species, this is specifically classified as a(n) ________
a. pheromone-based communication b. illegitimate signal c. communication signal d. deception
Garrod called enzyme defects ____________________. Fill in the blank(s) with the appropriate word(s)
Membrane-bound nuclei are characteristic of both Archaea and eukaryotes
Indicate whether the statement is true or false