The upper chambers of the mammalian heart are the

A. ventricles.

B. arteries.

C. vascular cavities.

D. atria.

E. sinuses.


D. atria.

Biology & Microbiology

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When they ferment glucose, members of the genus Streptococcus produce lactic acid, but no gas.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Hypertension is a complication associated with ____

a. too little exercise b. disorders involving the adrenal medulla c. relaxing of blood vessel walls d. stiffening of blood vessel walls e. too much exercise

Biology & Microbiology

All infections result in disease

Indicate whether the statement is true or false

Biology & Microbiology

In estimating the effect of a difference in earnings for ivy league graduates, non-ivy league college graduates, and non-college graduates the following regression is run: Earningsi = ?0 + ?1IvyLeaguei + ?2NonIvyCollegeGraduatei + Ui. What does the coefficient ?1 represent?

A. The average earnings of an Ivy league graduate. B. The average earnings of an ivy league graduate conditional on graduating from any college. C. The additional increase (decrease) in earnings from going from no college degree to an Ivy league degree. D. The additional increase (decrease) in earnings from going from graduating college to graduating from an Ivy league school.

Biology & Microbiology