A plant researcher wants to construct a synthetic cellulose fiber from 20 glucose molecules. How many molecules of CO2 and glyceraldehyde-3-phosphate are needed to construct the fiber?

A. 20, 60
B. 120, 40
C. 120, 120
D. 20, 40
E. 120, 60


Answer: B

Biology & Microbiology

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Which of the following correctly describes the roles of Mg2+ ions in the polymerase reaction?

A. The first Mg2+ deprotonates the aspartate in the active site. B. The first Mg2+ deprotonates the 3'-OH of the previous nucleotide. C. The second Mg2+ deprotonates H2O in the active site. D. The second Mg2+ stabilizes PPi by protonation. E. None of these choices is correct.

Biology & Microbiology

Which of the following diseases is not caused by a spirochete?

A) Lyme disease B) plague C) relapsing fever D) syphilis

Biology & Microbiology

Imprinting is a type of social learning based on an early experience

____________________ Indicate whether the statement is true or false.

Biology & Microbiology

Explain what has to happen to embryonic stem cells from a donor before they are used in a patient as a therapy.

What will be an ideal response?

Biology & Microbiology