Where are cell membrane components synthesized?
a. endoplasmic reticulum
b. lysosomes
c. Golgi apparatus
d. vesicles
e. nucleus
Ans: a. endoplasmic reticulum
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An initiator codon in E. coli is identified by locating:
A. a promoter sequence. B. the 5' cap structure. C. a Shine-Dalgarno sequence. D. a terminator sequence from the previous gene. E. an origin of replication.
The selection and differentiation of B cells during clonal selection is an example of:
A. mitosis. B. meiosis. C. binary fission. D. cytokinesis.
The correct flow chart for the release of sex
hormones is
a. hypothalamus ? posterior pituitary ? gonads b. hypothalamus ? anterior pituitary ? gonads c. anterior pituitary ? hypothalamus ? gonads d. posterior pituitary ? hypothalamus ? gonads e. none of these
From looking at the plant sunflower plant you conclude:
A) That the missing nutrient is mobile and likely Ca. B) That the missing nutrient is mobile and likely N. C) That the missing nutrient is non-mobile and likely Ca. D) That the missing nutrient is non-mobile and likely N.