Some cyanobacteria are not blue-green, rather they are red or brown; this is due to the presence of the photosynthetic pigment ________.
Fill in the blank(s) with the appropriate word(s).
phycoerythrin
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The term “hyperpolarization” refers to
a. movement of the resting membrane potential closer to threshold. b. movement of the resting membrane potential farther from the threshold c. an excitatory postsynaptic potential. d. the opening of sodium channels.
The above figure is a photomicrograph of what
kind of tissue? a. cardiac muscle b. skeletal muscle c. smooth muscle d. cartilage e. dense connective
A diploid germ cell will produce cells that have reduced the chromosome number by half, generating four haploid nuclei in
a)fertilization. b)mitosis. c)meiosis. d)replication. e)mutation.
Why is it not advisable to take antibacterial medicines when you have a cold or the flu?
What will be an ideal response?