Gap junctions in animal cells are most similar to ________ in plant cells?
A. primary cell walls
B. hemidesmosomes
C. plasmodesmata
D. tight junctions
E. middle lamella
Answer: C
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Which of the following gland-hormone pairs is mismatched?
A. pancreas-insulin B. anterior pituitary-growth hormone C. thyroid-thyroid hormone D. adrenal-parathyroid hormone E. ovaries-progesterone
Which of the following is not true of the outer membrane?
A. Gram-positive bacteria have an outer membrane. B. The lipid portion of the lipopolysaccharide layer is termed endotoxin. C. Porins create channels through the outer membrane. D. The innermost layer is a phospholipid bilayer. E. The uppermost layer is made of lipopolysaccharide.
A neuron's __________ receive signals, and its __________ transmits signals. Fill in the blank(s) with the appropriate word(s)
The pH of the body is maintained at
A. 7.00-8.00. B. 6.00-7.00. C. 6.25-7.45. D. 7.35-7.45. E. 7.65-7.85.