Sperm

(a) are male gametes.
(b) are female gametes.
(c) contain yolk.
(d) are produced in the ovaries.


(a) are male gametes.

Biology & Microbiology

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Some of the intestinal symptoms elicited by pathogens such as Salmonella, Shigella, and Escherichia are due to the presence of

A) pseudomurein. B) S-layers. C) lipopolysaccharides. D) peptidoglycan.

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Localized regions of plasma membranes that contain cholesterol and proteins involved in cell signaling are known as

A) gap junctions. B) arterial plaques. C) cadherin junctions. D) lipid rafts. E) plasmodesmata.

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When a new food product is being analyzed for nutritional content, the food will be subjected to hydrolysis in the lab. The end products are analyzed to determine, for example, fat and sugar content

Suppose a lab is analyzing a new product that claims to be fat free. After the hydrolysis of the product is complete, the examiners find glucose, glycerol, fatty acids, and amino acids. Is this product free of fat? Justify your answer.

Biology & Microbiology

DNA is composed of building blocks called _____.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology