At a minimum, the human immune system is capable of recognizing approximately how many different antigens?

A) 105
B) 1010
C) 1015
D) 1020
E) 1025


C

Biology & Microbiology

You might also like to view...

Which of the following is not a regulatory mechanism used to control the tryptophan operon in Escherichia coli?

A. Attenuation B. Repression C. Catabolite repression D. All of the choices are correct.

Biology & Microbiology

A(n) exponential growth curve has a J shape. Indicate whether the statement is true or false

Biology & Microbiology

The coordination of groups of skeletal muscles is driven by activity in the _____

A) cerebrum B) cerebellum C) thalamus D) medulla oblongata

Biology & Microbiology

______ is a study of the mechanisms of cellular energy release, including catabolic and anabolic pathways.

A) Amphibolism B) Bioenergetics C) Chemiosmosis D) Biosynthesis

Biology & Microbiology