A reflex pathway is the simplest pathway because it _____.
A. involves only one synapse
B. is evaluated and integrated by the medulla, not the cerebrum
C. does not involve conscious thought or learning
D. does not involve the central nervous system in any way
E. involves only one neurotransmitter
Answer: C
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You are a doctor examining a patient's blood test results. The test results include the concentration of T cells. These cells:
A. mature in the thymus. B. secrete antibodies. C. secrete antigens. D. are active only against bacteria. E. participate in cell-mediated immunity.
How long does it take for the primary immune response to kick in after the first exposure to an antigen?
a. 2 weeks b. 3 - 4 days c. 2 months d. 6 weeks e. 12 hours
Which statement is true of embryonic splitting?
a. It never occurs in nature. b. It involves the genetic contribution of only one parent. c. It produces immediate differentiation. d. It is applied in animal husbandry to produce genetically diverse offspring. e. It produces identical twins.
What would happen to the progeny of a cell that proceeded to mitosis and cell division after entering S phase but had not completed S phase? Keep in mind that highly condensed chromatin, including the centromere region, is replicated late in S phase
Explain your answer.