A reason or reasons given by scientists as to why viruses are not considered living organisms include:
a. Viruses do not contain genetic information
b. Viruses do not reproduce on their own
c. Viruses are all smaller than the smallest known cells
d. Viruses do not contain a nucleus
e. Viruses can be frozen and still survive
Answer: b. Viruses do not reproduce on their own
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The synthesis of glucose requires electrons; in photosynthesis, electrons are obtained from ________
a. water b. organic matter in soil c. oxygen d. carbon dioxide
You have recently identified a novel protein and obtained its sequence. How could you use this sequence to predict the function of the protein?
A. by looking for conserved domains B. by using the sequence to make antibodies against the protein C. by determining the DNA sequence that could encode the protein D. by determining the secondary structure of the protein
The advantage of homologous recombination is that ________.
A. following a splice with Cas9, the ends are joined back together with the induction of a frameshift mutation resulting in an inactive protein B. following a splice with a restriction enzyme, the sticky ends can be combined with a piece of donor DNA that has the same sticky ends C. genes from two different sources can be joined together when the wild-types contain homology between the two molecules, allowing DNA ligase to join the naturally-occurring sticky ends D. following a splice with Cas9, the ends of the chromosome can be seamlessly joined with a piece of donor DNA that has been engineering to contain flanking sequences homologous to the broken chromosome ends
The "big bang" refers to
A. an event marking the beginning of the universe. B. the extinction of the dinosaurs. C. the inevitable end of the universe. D. the collision of the first galaxies forming the universe as it is today. E. the inevitable death of large stars.