To move solutes like amino acids into a cell by active transport, the cell
A) must possess appropriate transport proteins in the plasma membrane.
B) must have a net gain in energy resulting from active transport.
C) maintains a lower concentration of the amino acids in the cytoplasm.
D) must move water out of the cytoplasm at the same time.
A
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What might happen to your red blood cells if you were suddenly unable to regulate the solute concentration of your blood and it began to rise?
A. Your blood cells would shrivel because water would move out of the cells via osmosis. B. Your blood cells would stay the same size. C. Your blood cells would enlarge and could rupture because water would move into the cells via osmosis. D. We do not have enough information to answer this question.
Which of the following subdisciplines is concerned with the expression of RNA molecules?
A. proteomics B. genomics C. metagenomics D. transcriptomics E. phylogenetics
After an action potential is triggered, the rapid increase in membrane potential can be attributed to
A. the closing of potassium leak channels. B. the opening of the voltage-gated potassium channels. C. the closing of sodium leak channels. D. the direction reversal of the sodium/potassium pump. E. the opening of voltage-gated sodium channels.
Identify the part of the atom that most determines the chemical properties of the atom
A) The number of shells B) The number of protons C) The number of neutrons D) The number of electrons