The largest reservoir of carbon is
a. living organisms.
b. oceans.
c. sedimentary rocks.
d. the soil.
C
Biology & Microbiology
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____ are the structures formed by roots that house nitrogen-fixing bacteria
Fill in the blank with the appropriate word.
Biology & Microbiology
A cell that is totipotent ____
a. has the potential to become any cell type of the adult b. induces nearby cells to follow a certain developmental pathway c. will never differentiate d. will not undergo determination e. has unregulated gene expression
Biology & Microbiology
The pulmonary artery carries blood away from the ____
a. aorta b. right atrium c. right ventricle d. left atrium e. left ventricle
Biology & Microbiology
Enzymes in the digestive tract catalyze hydrolysis reactions.
a. true b. false
Biology & Microbiology