The main photosynthetic pigment used by plants is _____.

a) RuBP
b) chlorophyll a
c) NADPH
d) ATP


Ans: b) chlorophyll a

Biology & Microbiology

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What process best characterizes Ca2+ movement from the cytosol (low Ca2+ concentration) into the endoplasmic reticulum (high Ca2+ concentration)?

A. Calcium movement is spontaneous. B. Calcium movement involves active transport. C. Calcium movement occurs by facilitated diffusion using a transporter protein. D. Calcium movement does not require energy. E. Calcium movement occurs by passive diffusion.

Biology & Microbiology

If a living plant cell is placed in a beaker with a solution that has a ? value lower than the ? value of the plant cell, the

plant cell will ____.

a. take up water until it bursts b. lose water until its ? = ? of the solution c. take up water until within the cell ?P = ??S

d. take up water until its ? = ?S of the solution e. lose water until its ?S = its ?P

Biology & Microbiology

When a dorsal lip from a newt is attached to the ventral side of another embryo, it results in ____

a. two separate newts b. two attached newts c. survival of only the original newt d. death of the newt e. no observable result

Biology & Microbiology

Factors such as behavioral, temporal, or ecological isolation mechanisms that prevent two closely related sympatric populations from interbreeding can be grouped together and classified as ________

A) prezygotic isolating mechanisms B) postzygotic isolating mechanisms C) polyploidy hybrid speciation D) adaptive radiation

Biology & Microbiology