Which of the following statements is NOT true of Gram-positive bacteria?

A. They have a thicker peptidoglycan layer than do Gram-negative bacteria.
B. They turn purple when subjected to the Gram-staining process whereas Gram-negative bacteria stain pink.
C. They lack the lipopolysaccharide that Gram-negative bacteria have.
D. They fluoresce at a different color than do Gram-negative bacteria.
E. They have a gram molecular weight of more than 1.0 whereas Gram-negative bacteria have a gram molecular weight of less than 1.0.


E. They have a gram molecular weight of more than 1.0 whereas Gram-negative bacteria have a gram molecular weight of less than 1.0.

Biology & Microbiology

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The process illustrated in the figure is a step in

a. the production of recombinant DNA. b. probing for transferred genes. c. DNA fingerprinting. d. sequencing DNA. e. producing radioactive probes.

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The polymerase chain reaction has revolutionized genetics because

A) it is capable of making virtually unlimited copies of DNA for study. B) it is capable of making copies of DNA with very little starting material. C) it is capable of making large numbers of DNA copies very quickly. D) All of these E) A and B only

Biology & Microbiology

The ribonucleic acid components known to exist in eukaryotic ribosomes are the following: 5.8S, 18S, 28S, and 5S

Indicate whether the statement is true or false

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Which of the following are connective tissues?

a. Bone, blood, and skin b. Red blood cells and neurons c. Cartilage, bone, and epithelium d. Adipose tissue, blood, cartilage, and bone e. Adipose tissue, dense and loose connective tissues, and neurons

Biology & Microbiology