When does a C4 plant use rubisco to perform carbon fixation?

a. in daylight only
b. from noon to midnight
c. from midnight to noon
d. in darkness only


Ans: a. in daylight only

Biology & Microbiology

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If the enzyme catalyzing the N to O reaction is inhibited, there will be a build-up of which compound?

a. M b. N c. O d. P e. Q

Biology & Microbiology

In many plant species, older roots and stems thicken by activity at _____

a. apical meristems c. vascular cambium b. cork cambium d. both cork and vascular cambium

Biology & Microbiology

Which of the following is physically the largest?

A. HIV B. RNA molecule C. E. coli cell D. Human T cell

Biology & Microbiology

In chickens, both males and females inherit autosomal genes that control the ability to lay eggs but only hens (females) actually lay eggs. This is an example of a _______________ trait.

a) sex-limited b) sex-linked c) sex-influenced d) maternal influence effect

Biology & Microbiology