Which of the following pairs regarding the epidemiology of malaria is mismatched?
A) vector — Ixodes
B) etiology — Plasmodium
C) found in liver — sporozoites
D) diagnosis — presence of merozoites
E) treatment — chloroquine when possible
A
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Which of the following adaptations to the plasma membrane allows mammals to hibernate in subzero
temperatures without their plasma membranes freezing?
a. Increase in cholesterol content only. b. Increase in protein content only. c. Increase in the number of double covalent bonds in phospholipids. d. Increase in both cholesterol and protein content. e. Increase in both cholesterol and double covalent bonds in phospholipids.
Cells that comprise ____ tissue have gap junctions, a single nucleus, and many mitochondria; in addition, this tissue is
striated and functions involuntarily.
a. skeletal muscle b. smooth muscle c. cardiac muscle d. striated columnar epithelium e. more than one of these
Monocots have flower parts that
a. are always reduced for wind pollination b. occur in multiples of three c. occur in multiples of four or five d. are gymnosperms and therefore lack flowers e. both a and b
What are antigenic shifts?
A. Sudden, significant changes to a major antigen of a pathogen that make the pathogen easier for the immune system to recognize. B. When a pathogen moves the antigens around on its surface to disguise itself from the immune system. C. Gradual changes over time to a major antigen of a pathogen that occur through mutation. D. Sudden, significant changes to a major antigen of a pathogen that usually occur through reassortment and can cause a pandemic.