________ incorrectly suggested that DNA has a triple helix structure.

A) Linus Pauling

B) James Watson and Francis Crick

C) Maclyn McCarty

D) Rosalind Franklin


A) Linus Pauling

Biology & Microbiology

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Which one of the following is the best explanation for why plants may use active rather than passive transport?

A. The phospholipid bilayer is not formed. B. Protein channels are plugged. C. Development of pores has not occurred. D. Membrane potential is blocked. E. Solute concentration is a factor.

Biology & Microbiology

Lichens are adversely affected by

A. sexual reproduction of the fungal partner. B. asexual reproduction of the photosynthetic partner. C. sunlight. D. pollution. E. humidity.

Biology & Microbiology

Which of the following hormones directly stimulates the development of male secondary sex characteristics?

What will be an ideal response?

Biology & Microbiology

Turkey is often served at Thanksgiving meals in which family members vie for portions of white or dark meat. Why is the breast meat of a turkey whiter in appearance than the darker meat found in the leg muscles?

What will be an ideal response?

Biology & Microbiology