Which of the following is an internal defense in the body’s innate immune system?

a. Antibodies
b. B cells
c. Memory response
d. Natural killer cells


d. Natural killer cells

Natural killer cells are part of the internal defense in the body’s innate immune system.

Biology & Microbiology

You might also like to view...

In a series of cotransformation experiments, DNA fragments from x+y+z+ donor bacteria were used to transform xyz recipient bacteria

The following transformation phenotypes were observed in the recipient cells: xy+z xyz+ x+y+z x+yz+ What does this imply about the gene order of x, y, and z?

Biology & Microbiology

Accidents during meiosis that can result in trisomies and monosomies are called

a. nondisjunctions. b. inversions. c. reciprocal translocations. d. recombinations. e. acrocentricities.

Biology & Microbiology

Which is a direct result of cleavage?

A) formation of the nervous system B) formation of the notochord C) division of cells D) segmentation

Biology & Microbiology

Most human adults are lactose intolerant. People with lactose intolerance produce insufficient amounts of _______.

A. vitamins B. lactose C. saliva D. the enzyme lactase

Biology & Microbiology