Sexually transmitted infections are commonly spread
A. on toilet seats.
B. by oral or anal sex.
C. in hot tubs.
D. in swimming pools.
E. by reusing towels.
B. by oral or anal sex.
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Match each of the descriptions in questions 1-5 with the appropriate name (A-M) of an anatomic feature of lymphoid tissues
A. Periarteriolar lymphoid sheath B. Thymic medulla C. Thymic cortex D. Parafollicular cortex of lymph node E. Hematopoietic bone marrow F. Afferent lymphatic G. Efferent lymphatic H. Marginal zone I. Red pulp of spleen J. White pulp of spleen K. Epidermis L. Dermis M. Peyer's patch Location of most T lymphocytes in the spleen
State which number on the number line is in the location given below. 7 units to the left of –2
A) 9 B) –10 C) –9 D) 5 E) 10
In ____ a reliable blood test was developed to screen blood and blood products for HIV antibodies.
A. 1981 B. 1984 C. 1985 D. 1987
What is the last step in creating a line graph?
A. Plotting points B. Drawing straight lines C. Constructing a set of axes D. Labeling the graph with numbers