The fluid nature of the membranes is attributed to a lateral movement of
A. protein channels.
B. phospholipid molecules.
C. antigen molecules.
D. pumps such as the proton pump.
E. the entire lipid bilayer.
B. phospholipid molecules.
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Which metabolic strategy's existence suggests rapid growth is NOT always the best strategy to survive in the environment?
A) anaerobic fermentation B) disproportionation C) methylotrophy D) syntrophy
Autism, Alzheimer disease, Parkinson's disease, and schizophrenia are all associated with ____
a. copy number variants b. fragile sites c. inversions d. deletions e. translocations
Resting membrane potential may be defined as
a. the difference of charge between cytoplasmic side of cell’s membrane and outer membrane side of cell. b. a positive charge. c. an action potential. d. axon generated. e. a nerve impulse.
In an amphibian embryo, a band of cells called the neural crest
A) rolls up to form the neural tube. B) develops into the main sections of the brain. C) produces cells that migrate to form teeth, skull bones, and other structures in the embryo. D) has been shown by experiments to be the organizer region of the developing embryo. E) induces the formation of the notochord.