A protein that functions as a cell-cycle regulator causes cell death (apoptosis) under high sunlight exposure. Which symbol given to this protein?
A) p34
B) cyclin
C) p102
D) phosphokinase
E) p53
E
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Which of the following statements is correct?
a. Extinction is an unnatural process while speciation is a natural process b. Both extinction and speciation are unnatural process. c. Extinction is completely driven by man made influences while speciation is a naturally occurring event. d. Extinction is a natural process while speciation is unnatural. e. Both extinction and speciation are natural processes.
Which of the following is the most recent plant adaptation to have evolved?
A. Vascular system B. Flowers C. Seeds D. Cones
The tough connective tissue sac surrounding the heart is the
A. myocardium. B. epicardium. C. peritoneal cavity. D. pericardium. E. endocardium.
The term used to describe a harmless organism resembling a harmful one is:
a. warning coloration b. Batesian mimicry c. cryptic coloration d. Mullerian mimicry d. aposematic coloration