If the teacher wanted to show the students what a lophophore is and how it works, the teacher would point out a feeding _____

A) hydra
B) sponge
C) gastropod
D) ectoproct


D

Biology & Microbiology

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Why is antigenic drift a problem for the immune system?

A. It requires a new, primary response by B cells. B. The ability of MHC to present antigen is affected. C. T cell receptors may not recognize the altered antigen. D. Two answer options are correct: It requires a new, primary response by B cells AND T cells may not recognize the altered antigen.

Biology & Microbiology

Moves in the genome through an RNA intermediate

Match the description with the appropriate term.

Biology & Microbiology

When genes are on different chromosomes, what percentage of gametes produced by a double heterozygous individual will be recombinant?

a. 100% b. 75% c. 50% d. 25% e. 0%

Biology & Microbiology

Which of the following are inorganic molecules that bind to enzymes?

A) apoenzymes B) coenzymes C) cofactors D) holoenzymes

Biology & Microbiology