Which neurotransmitter opens ligand-gated sodium channels?
a. GABA
b. cortisol
c. ecdysone
d. acetylcholine
e. brassinosteroid
d
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This part of the brain coordinates motor
activity for moving limbs and maintaining posture. This part of the brain is the
a. cerebrum. b. cerebellum. c. medulla oblongata. d. pons. e. hypothalamus
Explain what occurs when a plant exhibits heliotropism. What will be an ideal response?
If you ate a piece of toast covered with butter, which macromolecule components would result after your body breaks down the food?
A) amino acids and glycerol B) glycerol, fatty acids, and monosaccharides C) monosaccharides and amino acids D) fatty acids, amino acids, and polysaccharides
Nondisjunction is the process
A. in which homologous chromosomes fail to segregate normally. B. in which abnormal cytokinesis occurs. C. in which metaphase is not allowed to occur. D. described by two of these statements.