Which of the following is not part of the body's first line of defense?
A) fever
B) intact skin
C) mucus
D) the pH of the stomach contents
A) fever
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Why would an iron deficiency result in anemia?
What will be an ideal response?
Decompression sickness ("the bends") is caused by
a. a rapid rise of carbon dioxide in the blood. b. lack of oxygen in the tissues. c. bubbles of nitrogen in the blood. d. glucose deficiency. e. descending too rapidly into deep water.
The following list describes ways that CRISPR may be used to treat cancer. Which of the following describes immunotherapy instead of CRISPR therapy?
A. Cancer causing mutations within cells may be corrected, preventing cancer from occurring. B. Cytotoxic T cells may be stimulated, creating an immune response against cancer cells and shrinking tumors. C. Mutated tumor-suppressor genes may have their previous function restored, allowing normal regulation of cell division. D. Nucleotides within DNA may be removed, inactivating genes that are responsible for some types of cancer. E. Mutated proto-oncogenes may have their previous function restored, allowing normal regulation of cell division.
The diameter of most animal and plant cells ranges from
A) 0.1 to 1.0 micrometers. B) 1.0 to 10 micrometers. C) 10 to 100 micrometers. D) 100 to 1,000 micrometers.