Specificity and memory are associated with which body defense mechanism?
A. Phagocytosis by macrophages and neutrophils
B. T-cell and B-cell responses
C. Interferon
D. Anatomical barriers in the body
E. Inflammatory response
Answer: B
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Which of these terms is NOT used as a nickname for a stop codon?
A) emerald B) amber C) opal D) ochre
An Rh- ______ baby born to an Rh- _______ mother is at risk for attack by maternal antibodies
a. negative; negative b. negative; positive c. positive; negative d. positive; positive e. neutral; positive
Which of the following cells contain a plasma membrane?
A) Animal cells only B) Animal cells and plant cells only C) Animal cells, plant cells, and bacterial cells D) Bacterial cells only
Which of these events occurs during anaphase?
A) Sister chromatids become separate chromosomes. B) Chromosomes line up in the middle of the cell. C) The nuclear envelope reappears. D) The nuclear envelope breaks up.