Directional selection is more likely to be weak than strong.

a. true
b. false


Ans: a. true

Biology & Microbiology

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What are the monomers of proteins?

A. Glucose B. Fatty acids C. Nucleic acids D. Amino acids

Biology & Microbiology

Facilitated diffusion implies that energy in which form is NOT required?

A) ATP B) oxygen C) Na+ D) glucose E) light

Biology & Microbiology

Water-soluble hormones

a. have to be transported by specific protein carrier molecules in the blood. b. have no trouble entering the target cells. c. find and react with the cell lipid bilayer. d. always elicit the production of a second messenger. e. are the same as lipid soluble.

Biology & Microbiology

A rare genetic disorder called Gaucher disease may strike as many as one in 450 people of ____ descent

a. Middle Eastern

b. Western European c. African American d. British e. Eastern European

Biology & Microbiology