When conducting a scientific experiment, a(n) _____________ is tested.

A) theory
B) prediction
C) question
D) answer
E) null variable


B) prediction

Biology & Microbiology

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Which of the following is TRUE of both T cells and B cells?

A. They are lymphocytes. B. They recognize specific antigens on the cell surface. C. They have class I MHC molecules on their cell surface. D. They are involved in the humoral immune response. E. All of the responses are correct.

Biology & Microbiology

large granular leukocyte comprises ___% of circulating leukocytes

What will be an ideal response?

Biology & Microbiology

Females of various species shop around for

males that a. have the best burrows. b. offer superior nuptial gifts. c. make showy displays. d. include any or all of these. e. include none of these

Biology & Microbiology

If you want to affect chromatin packaging, which amino acid could you mutate to affect both histone acetylation and methylation patterns?

A) arginine B) methionine C) histidine D) lysine E) asparagine

Biology & Microbiology