What is a property of a pathogenic bacterium?
A) It may produce a protein that interferes with basic cellular functions.
B) All strains of the same species are also pathogenic.
C) It probably conducts photosynthesis.
D) It is resistant to all antibiotics.
A) It may produce a protein that interferes with basic cellular functions.
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In proteins, structural segments called ____ provide flexibility that allow parts of the protein to bend, fold, or move
a. random coils b. peptide bonds c. b sheets d. a helices e. b polysaccharides
The average life expectancy for females in the United States is
a. 80 years. b. 79 years. c. 76 years. d. 74 years. e. 65 years.
One difference between eukaryotic and prokaryotic cells is that eukaryotic cells ________ prokaryotic cells
A) have DNA, which is lacking in B) have membrane-enclosed structures called organelles, which are lacking in C) have a plasma membrane, which is lacking in D) have a nucleoid region, which is lacking in
Adenine always binds to thymine and cytosine always binds to guanine
a. true b. false