Which of the following types of molecules is LEAST involved in cell communication?
A. carbohydrates
B. lipids
C. steroids
D. proteins
E. neurotransmitters
A. carbohydrates
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Predict which of the following would happen if a plant was exposed to a toxin that made the thylakoid membranes permeable to hydrogen ions
A. The hydrogen ion gradient across thylakoid membrane would be eliminated. B. The hydrogen ions necessary to generate NADPH from NADP+ would no longer be present. C. The oxidation and reduction of the protein complexes in the electron transport would be prevented. D. A reversal of the hydrogen ion gradient across the thylakoid membrane would result in a higher pH in the thylakoid lumen than in the surrounding stoma.
A group of muscles that work together in supportive functions are known as ____________________ muscles. Fill in the blank(s) with the appropriate word(s)
If a cell includes a mixture of variable numbers of wild-type and mutant organelles, this condition is known as ________
Fill in the blank(s) with correct word
You start to trip, but you keep your balance and don't fall. Which of the following brain regions is responsible for the rapid coordination of muscle activity that kept you from falling?
A) cerebral cortex B) thalamus C) cerebellum D) cerebrum