Red muscle fibers produce ATP mainly by aerobic respiration and their bright red color comes from ____

a. blood
b. hemoglobin
c. carbon dioxide
d. sarcomeres
e. myoglobin


e

Biology & Microbiology

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The neurotransmitter _____________________ functions in the areas of the brain associated with mood, attention, arousal and memory, and is associated with nicotine addiction

Fill in the blank(s) with correct word

Biology & Microbiology

The compounds involved in phototropism are ____

a. phototropins b. gibberellins c. cytokinins d. phytoestrogens e. statoliths

Biology & Microbiology

Mitochondrial disorders can be caused by mutations in all the following except

A. cytoplasmic DNA B. nuclear DNA C. mitochondrial DNA

Biology & Microbiology

The size and shape of a finch's beak correlates with its ________.

A. size B. choice of food C. choice of mates D. habitat

Biology & Microbiology