Enzyme specificity refers to the
(a) specific name of each kind of enzyme.
(b) fact that enzymes catalyze one particular substrate or a small number of structurally similar substrates.
(c) effect of temperature on enzyme activity.
(d) effect of pH on enzyme activity.
(b) fact that enzymes catalyze one particular substrate or a small number of structurally similar substrates.
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Temporal summation is a response to the:
A. location of synapses over the surface of a postsynaptic neuron. B. frequency of stimulation of a postsynaptic cell. C. amount of neurotransmitter released from a presynaptic cell. D. density of ligand-gated channels on the postsynaptic cell.
cIn which of the following organs would you expect to find adhesive junctions in humans?
A) heart muscle B) skin epithelium C) uterus D) both choices A and B E) choices A, B, and C
A vertebrate paleontologist is hunting through chalk deposits and finds a set of fused clavicles with some other bone fragments. What has she found?
A. The remains of an amphibian. B. The remains of a lobe-finned fish. C. The remains of a bird. D. The remains of a mammal. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about bird adaptations? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following statements is true?
a. Organs receive either parasympathetic fibers or sympathetic fibers but not both. b. The sympathetic nervous system that supplies an organ will also provide parasympathetic fibers to it. c. Both the sympathetic and parasympathetic have either excitatory or inhibitory effects. d. The sympathetic branch of the sympathetic system usually speeds up the activities of the body. e. All of these are true.