Which of the following statements concerning tumor necrosis factors (TNF) is false?
a. TNF can be secreted by macrophages.
b. TNF may stimulate the inflammatory response.
c. The release of large amounts of TNF brings down a high fever.
d. TNF kills cancer cells.
e. TNF can be secreted by lymphocytes.
C
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Per gram of body tissue, which of the following animals would have the highest basal metabolic rate?
A. mouse B. elephant C. polar bear D. dog E. cheetah
A mutation in the transcription factor protein shown, protein T, disrupts the function of its DNA-binding motif. The most likely result of this mutation would be that
A. protein T can no longer directly interact with DNA, but it can still regulate gene expression through a second transcription factor.
B. protein T can no longer interact with other transcription factor proteins, but it can still regulate gene expression by directly binding to DNA. C. protein T can no longer regulate gene expression.
D. protein T can still regulate gene expression by interacting directly with DNA regulatory regions.
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 already know about transcription factors?
Consider Possibilities
· Consider the different answer options. Which can you rule out?
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?
The hormone ________ was named after the fungus that causes "foolish seedling" disease in rice
A) cytokinin B) florigen C) gibberellin D) auxin E) ethylene
What type of microscopy provides a three-dimensional view of the surface of an object?
A. transmission electron microscope B. scanning electron microscope C. compound light microscope D. phase contrast microscope E. ultraviolet microscope