Which of the following is most likely to occur when a tumor-suppressor gene is mutated?
A. The tumor-suppressor gene may be overactive.
B. The resulting tumor-suppressor protein would further suppress cell proliferation.
C. The resulting tumor-suppressor protein would activate an oncogene.
D. The tumor-suppressor gene and resulting protein may lose its function and ability to suppress cell proliferation.
E. None of the choices are possible.
D. The tumor-suppressor gene and resulting protein may lose its function and ability to suppress cell proliferation.
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Mechanical receptors can be used to stun or kill prey
Indicate whether the statement is true or false.
What are the two most likely reasons for cellular senescence (the loss of proliferative ability)?
a. DNA damage and telomere lengthening b. DNA damage and telomere shortening c. DNA intactness and telomere shortening d. DNA intactness and telomere lengthening
Mitochondria are bounded by a double membrane. The inner filled space is called the matrix which contains ______________ that break down carbohydrate products, releasing _______________ to be used for ATP production.
Fill in the blank(s) with the appropriate word(s).
Which one of the following scientists tested the hypothesis that microorganisms can arise by spontaneous generation?
A. Elena and Lenski B. Redi C. Pasteur D. Darwin E. Alvarez