Sulfur has six valence electrons. How many covalent bonds does a sulfur atom typically form?
A. 3
B. 1
C. 5
D. 2
E. 4
Answer: D. 2
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What was the goal of the Human Genome Project?
A. identifying every gene in the human sex cell B. identifying every gene in the human somatic cell C. identifying every protein in the human sex cell D. identifying every protein in the human somatic cell E. sequencing every gene in the human cell
Which property of water molecules is
responsible for movement of water from roots to leaves in a plant?
a. hydrophobicity b. temperature stability c. fusion d. solvent polarity e. cohesion
Which of the following illustrates hydrolysis?
a. the reaction of two monosaccharides to form a disaccharide b. the reaction of two amino acids to form a dipeptide c. the reaction of a hydrogen atom and a hydroxide ion to form water d. the reaction of a fat to form glycerol and fatty acids e. the formation of ATP from ADP and inorganic phosphate
A bacterial cell in which the F plasmid is integrated into the chromosome is known as
A) an F- cell. B) an F+ cell. C) an F' cell. D) an Hfr cell. E) None of the above.