Due to biological magnification, which would have the highest concentration of a chemical herbicide?
a. grass – the dominant primary producer
b. cow – an herbivore
c. grasshoppers – an herbivore
d. mice – predators of butterflies
e. hawk – predators of mice
ANSWER: e
Biology & Microbiology
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If the age of the Earth is 4.6 billion years old, for what percentage of this time is Earth thought to have been anaerobic?
A. 0.1% B. 27% C. 44% D. 68% E. 99.3
Biology & Microbiology
Nonprotein catalysts are known as ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Mutations are changes in the nucleotide sequence of DNA that ____
a. do not occur in the germ cells b. do not occur in the somatic cells c. are always chemically induced d. are always spontaneous e. can be passed on to daughter cells
Biology & Microbiology
Distinguish between polygenic and multifactorial traits
What will be an ideal response?
Biology & Microbiology