The main way acetylcholine is cleared from a synapse is by
A. degradation by an enzyme.
B. uptake by the postsynaptic cell.
C. reuptake by the presynaptic cell.
D. being engulfed by a supporting glial cell.
A
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Define basic multicellular unit (BMU)
A. The clusters of chondrocytes within the metaphysis that will be converted to bone B. A group of osteoblasts and osteoclasts that work together during bone remodeling C. The osteoblasts found in the deepest layer of the periosteum, involved in appositional growth
Homeostasis and occupying space are both unique characteristics of living things
Indicate whether the statement is true or false
match the nucleic acid with its description.
deoxyribonucleic acid (DNA) - ribonucleic acid (RNA) it contains a sugar called ribose; it contains nitrogenous bases A, U, C, G; it consists of one nucleotide chain; it functions mainly in the cytoplasm; it carries out the instructions of DNA - it contains a sugar called deoxyribose; it contains nitrogenous bases A, T, C, G; it consists of two nucleotide chains (double helix); it functions in the nucleus; it codes for synthesis of RNA nd protein
Substances can enter a cell either with or against the concentration gradient by ________ transport, which is powered by ________.
A. passive; electrolytes B. active; ATP C. active; electrolytes D. passive; ATP