Each of the following complexes pumps protons out of the matrix to generate the proton gradient except
A) complex I.
B) complex II.
C) complex III.
D) complex IV.
E) coenzyme Q.
Answer: B
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A cell biologist examines a skin cell from a lizard during metaphase of mitosis and determines that 20 chromatids are present. The role of meiosis in this species is to (Check all that apply)
_____ Produce 4 daughter cells that are genetically different from each other. _____ Produce 4 daughter cells that are genetically different from the original parental cell. _____ Reduce the number of chromosomes per cell from 10 to 5. _____ Reduce the number of chromosomes per cell from 20 to 10. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about meiosis? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
Cadherin proteins are specifically associated with which of the following during embryonic development?
A. the differentiation of the archenteron B. anterioposterior axis formation C. maintenance of different germ cell layers through specific cell-to-cell contacts D. establishment of a morphogenic field E. limb cell differentiation
This type of tissue has gap junctions, a single
nucleus, many mitochondria, is striated and functions involuntarily. This tissue type is
a. skeletal muscle. b. smooth muscle. c. cardiac muscle. d. striated columnar epithelium. e. more than one of these
What makes neonatal herpes a very serious condition?
A) The potential for life-long infection. B) Central nervous system infection of the neonate. C) HHV infection of the bone marrow. D) Development of lymphoma. E) The potential for oncogenesis.