The Calvin cycle can only produce sugar if ______ can enter through the pores of the leaves.

A. water
B. O2
C. CO2
D. N2
E. potassium


Answer: C

Biology & Microbiology

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The typical movement of xylem sap from roots to shoot parts is best described as ____

a. facilitated diffusion b. symport c. guttation d. osmosis e. bulk flow

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Lucy, a new Army recruit, stood in formation for long periods of time without moving an inch. She eventually became lightheaded and fainted because her blood pressure dropped. What might have caused her blood pressure to drop?

What will be an ideal response?

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Amino acids are converted to substrates of the Citric acid cycle by (beta-oxidation/deamination/transamination).

Fill in the blank(s) with the appropriate word(s).

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Which structural components allow for motility in Escherichia coli?

a. cilia b. peritrichous flagella c. pili d. polar flagella

Biology & Microbiology