Which of the following is most correct regarding genes, DNA, and protein?
A) A gene is a section of DNA whose sequence encodes a particular protein, which is composed of amino acids.
B) A gene is a section of a chromosomal DNA composed of many amino acids.
C) DNA is composed of many genes, which are formed from amino acid sequences.
D) DNA is composed of amino acids, which encode the protein and genotype.
A) A gene is a section of DNA whose sequence encodes a particular protein, which is composed of amino acids.
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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.
Without ____, living organisms would often experience major changes in pH in their cells
a. buffers b. acids c. surface tension d. nonpolar bonds e. bases
Protein kinase A regulates glycogen metabolism by phosphorylating glycogen synthase and
a. phosphorylase kinase. b. glycogen phosphatase. c. glycogen phosphorylase. d. glucokinase.
Which of the following consists of a protein coat surrounding a molecule of genetic material?
A) Protists B) Viruses C) Bacteria D) Archaea E) Prions