How would the hydrolysis of phosphodiester bonds impede the origin of life?
A. It would stop the formation of cell membranes.
B. It would prevent the assembly of nucleic acids.
C. It would digest amino acids.
D. It would slow the rate of protein synthesis.
Answer: B
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A recipient cell that is temporarily diploid for a portion of the genome during the replacement process is called a(n) ________.
A. exogenote B. merozygote C. endogenote D. None of the choices are correct.
Transfer RNA (tRNA) molecules are called "connectors" because they bind
A. promoters at one end and terminators at the other end. B. promoters at one end and amino acids at the other end. C. DNA at one end and mRNA codons at the other end. D. codons of mRNA at one end and amino acids at the other end. E. amino acids at one end and DNA at the other end.
What are carcinogens?
A. Errors during DNA replication B. The only source of mutations in cells C. Chemical factors that can treat cancer D. Physical or chemical factors that can lead to mutations causing cancer
Based on the endosymbiont theory, which of the following would you expect to find in a chloroplast?
A. cellulose B. a nucleus C. silica D. DNA E. a mitochondrion