Secondary immune responses upon a second exposure to a pathogen are due to the activation of _____

A) memory cells
B) macrophages
C) stem cells
D) B cells
E) T cells


Answer: A

Biology & Microbiology

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During osmosis, water moves from a region of _________ to a region of _________

A. high solute concentration; low solute concentration B. high solvent concentration; low solvent concentration C. low solute concentration; high solute concentration D. "high solvent concentration; low solvent concentration" AND "low solute concentration; high solute concentration" are both correct answers.

Biology & Microbiology

The majority of the nonrepetitive genes in an organism are found in which of the following?

A. Unique sequences B. Moderately repetitive sequences C. Highly repetitive sequences D. None of the answers are correct

Biology & Microbiology

The left hemisphere of the brain is responsible for

a. music. b. artistic ability. c. spatial relationships. d. language skills. e. abstract abilities.

Biology & Microbiology

Which Kingdom contains the protozoa, water and slime molds, and algae?

a. Prokaryotae b. Fungi c. Protista d. Animalia e. Plantae

Biology & Microbiology