Of the following microtubule-interacting proteins, which might you potentially investigate as a mechanism for disrupting cell division in actively replicating tumor cells?
A) Tau
B) +-TIP proteins
C) catastrophins
D) G-actin
E) FtsZ
C) catastrophins
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Which statement about the differentiation of the three primary germ layers is not correct?
A. Ectoderm gives rise to epithelial cells, pigment cells of skin, and nerve cells in the brain. B. Mesoderm gives rise to cells that make up the inner layer of skin, muscle cells, and red blood cells. C. Endoderm gives rise to cells lining the digestive tract and lungs, as well as liver and pancreas. D. Ectoderm gives rise to cells lining the digestive tract and lungs, as well as liver and pancreas. E. Germ layers are sheets of cells that will differentiate into specialized cells.
The presence of a specific plasmid in a bacterial cell may be determined if the plasmid _____
A. is exceptionally large B. is an expression vector C. contains pieces of a viral genome D. contains a selectable marker
Atrial natriuretic hormone (ANH) stimulates the kidneys to excrete salt and water in the urine. Why does it make sense that the heart is the source of ANH?
A. The heart is a major endocrine organ that releases several hormones. B. ANH helps regulate blood pressure, which is sensed by distension of the heart atria. C. The heart is conveniently close to the hypothalamus. D. Secretion of hormones by the heart makes it easy for them to enter the bloodstream. 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 atrial natriuretic hormone? What other information is related to the question? Choose Answer Given what you now know, what information 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?
Chlorophyll's most important role during photosynthesis is:
A) keeping the leaves of plants green. B) capturing electrons that can, in turn, be used by carotenoids. C) turning color in the autumn each year. D) converting light energy from the sun into chemical energy. E) turning into a molecule of ATP upon being struck by sunlight.