Semen contains
(a) sperm.
(b) the secretions of sex accessory glands.
(c) eggs.
(d) both a and b.
(d) both a and b.
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Hemorrhagic and nonhemorrhagic fever diseases have a common feature of a high fever. These categories of diseases are distinguished by
A. the pattern of the fever, whether it is constant or varies with time. B. the viral load in the blood, specifically the viral titer. C. viral causes in hemorrhagic fevers and bacterial or protozoan causes in nonhemorrhagic fevers. D. the overall mortality rate, as hemorrhagic fevers have a much higher mortality rate. E. the integrity of the capillary endothelium and its ability to contain the blood.
Which of the following are molecular mediators of inflammation?
A) chemokines B) cytokines C) erythrocytes D) both chemokines and cytokines
Hirudinea is the only class of annelids that contains:
A. species that are parasitic blood suckers B. species with a segmented body C. parapodia D. a gizzard E. a clitellum
Please select the answer that best describes microbial food fermentations.
A) Saccharomyces, a fungus, ferments grains for alcohol production. B) All of these choices are correct. C) A variety of nutrients can be used as starting material for fermentation, and this varies the taste of the food or drink. D) The products produced by microbes during fermentation can add to the flavor and uniqueness of the food. E) Bacteria and fungi are the major fermenting microorganisms used for food production.