Imagine that you are a medical student working in a cancer research laboratory. Your boss has given you samples of cancer cells and blood from a patient
She has told you that the cells have no mutations in any of their signaling molecule proteins (i.e., all the proteins are
normal), but the cells' signaling transduction properties are not normal, causing them to be
cancerous. Which of the following could account for the increased cell proliferation in the
patient?
A. The cells taken from the patient have more
growth factor receptors than normal.
B. The concentration of a signaling molecule
in the patient is higher in the patient than
usual.
C. The cells taken from the patient exhibit a
reduced level of signal amplification.
D. Both A and B.
E. A, B, and C.
D
You might also like to view...
Oxygen is toxic to
A) strict anaerobes. B) strict aerobes. C) aerotolerant organisms. D) facultative anaerobes. E) all of the above
Identify the prokaryotic organism from the list below.
A. Fungus B. Bacteria C. Protist D. Animal
The plasma membrane of some white blood cells contain ________ that bind with proteins of cells such as bacteria that have invaded the human body. These special proteins tell the white blood cells those bacterial cells do not belong to that particular human and to phagocytize (eat) them.
a. channel proteins b. receptor proteins c. diffusion proteins d. carrier proteins
When seeds are removed from strawberries, fruit growth is stopped. This suggests the seeds contain which of the following hormones?
A. ethylene B. auxin C. strigolactones D. oligosaccharides E. gibberellins 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 the relationship between seeds and fruit? 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?