The layers of peptidoglycan of the bacterial cell wall can be cross-linked by peptide intrabridges or by direct cross-linking.

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


False

Biology & Microbiology

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Genes located along the X chromosome:

A. have a full set of complementary alleles on the Y chromosome. B. are called X-linked genes. C. are contributed solely by the female parent. D. are always recessive to genes located on the Y chromosome.

Biology & Microbiology

The growth of P. acnes within hair follicles, in many individuals, leads to

A. eczema. B. carbuncles. C. boils. D. acne.

Biology & Microbiology

Bacteriophages may reproduce using a __________ pathway in which viral DNA becomes part of the

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

Biology & Microbiology

Which of the following has not been shown to slow down the signs of aging in humans?

A) eating a very low-calorie diet B) regular exercise C) protecting the skin from sun exposure D) All have been found to be beneficial to humans.

Biology & Microbiology