for blocking serotonin reuptake high 37. Although most antidepressant drugs have
ID: 3449599 • Letter: F
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for blocking serotonin reuptake high 37. Although most antidepressant drugs have a sites their is low a. efficacy; affinity b. affinity; specificity c. affinity; efficacy d. efficacy; sensitivity inate the action of neurotransmitters at their and 38. postsynaptic receptors a. Habituation; desensitization b. Reuptake; agonism e. Antagonism; enzymatic deactivation. d. Reuptake; enzymatic deactivation 39. The important for the reward aspects of play. a nigrostriatal pathway b. raphe nuceli c. prefrontal cortex d. mesolimbic dopamine system 40. refers to a mechanism in which genes can be modified by the addition of a methyl chemical compound to the cytosine nucleotide base in DNA. a. DNA methylation b. DNA polymerization c. DNA cytosination d. DNA dimerization 1. Histones are proteins located in cellular nuclei that a. act as spools around which DNA coils b. transport amino acids to ribosomes c. repair damaged DNA d. Pull chromosomes apart during cell division 42. During early neural development dendrites and enhances the probability of neuronal survival. facilitates the growth of axons and a. glutamate b. progesterone d. nerve growth factor (NGFExplanation / Answer
38. Answer: D. Explanation:
a. Re-uptake takes place because the neurons have transporter protein which are symporters; that is, they pump both salt ions and neurotransmitters into the neurotransmitter. Both sodium and chloride are pumped.
b. Neurotransmitters contains some amino acids such as acetylcholine and one that are neuropeptides. The enzymes joints and breaks the neurotransmitter so that it can no longer fit into the receptor. The nerve gas Sarin works as a blockage of acetylcholinesterase.
39. Answer: A. EXPLAINATION: it is responsible for the movement in our body.
40. Answer: A. EXPLAINATION: It is a process in which methyl groups are added in to the DNA which changes the function of the DNA without changing its sequence.
41. Answer: A. EXPALINATION plays a role in gene regulation.
42. Answer: G. EXPLAINATION: The NGF helps in the growth. It facilitates the faster growth of axons and dendrites.
43. Answer: A. EXPALINATION: Glasgow coma scale measure tests the behavior such as eye opening response, such as towards pain or speech and to spontaneous responses; verbal response, such as incomprehensible word use, orientation to time, place and person; and motor response such as responding to command, reflex towards pain.
44. Answer: D. EXPALINATION: progesterone helps in the cognitive recovery and secondary neuron loss and progesterone has been considered as female reproductive hormone.
45. Answer: A. (For details, study the crux of Darwin’s theory of Evolution).
46. Answer: D. EXPLAINATION: The growth of a neuron however depends. A cell body may grow in a day. A neuron may take a week or so and new synapses may even take a year.
47. Answer: A. EXPLAINATION: It is like a messenger that carries information through the nerves; growing from the central nervous system, affecting the cell that has appropriate receptors.
48. Answer: A. Explanation: For the former, the research has shown there has been a decrease of ventral striatum in adolescents than in adults. Whereas the latter is hyperactive helping the teenagers to make judgments better and perform better.
49. Answer: d.
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