The cellular targets of physical and chemical agents fall into general categories including those that damage
A) the mitochondrion.
B) the cell membrane.
C) cytoplasmic inclusions.
D) the nucleus.
Answer: B) the cell membrane.
You might also like to view...
The pistil of a flower is best described as:
A. a structure to defend against insects B. a single carpel or group of fused carpels C. a place where pollen is produced D. a grouping of filaments E. a place for sperm to be produced
During diffusion how will the particles of a solution move?
a. The solutes will move from a high concentration to a low concentration. b. The solutes will move toward the left side of the membrane. c. The solutes will move from a low concentration to a high concentration. d. The solutes will move toward the right side of the membrane.
The codon 5'-AAA-3' codes for the amino acid lysine. Which of the following mutations in this codon is a neutral mutation?
A) 5'-ATA-3' to isoleucine B) 5'-AGA-3' to arginine C) 5'-AAG-3' to lysine D) 5'-CAA-3' to glutamine E) 5'-AAC-3' to asparagine
What purpose do restriction enzymes play in bacterial cells?
a. Restriction enzymes prevent the overproduction of mRNA in the bacterial cell. b. Restriction enzymes attack bacteriophage DNA when it enters the cell. c. Restriction enzymes promote bonding of the RNA polymerase to the promoter. d. Restriction enzymes limit the rate of bacterial replication. e. Restriction enzymes connect Okazaki fragments.