The inability of a virus to bind to its target cell as a result of antibody binding to the virus is referred to as ________.
A. toxin neutralization
B. adherence prevention
C. cytotoxicity
D. viral neutralization
Answer: D
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The human gastrointestinal tract includes all of the following EXCEPT the
A) small intestine. B) stomach. C) large intestine. D) epiglottis.
An organism called Bacillus fastidiosus
A. might be expected to be very flexible as to growth requirements. B. might be expected to be very strict as to its growth requirements. C. would probably be grown on amedium rich in growth factors. D. might be expected to have a rod shape. E. might be expected to be very strict as to its growth requirements, would probably be grown on amedium rich in growth factors , AND might be expected to have a rod shape.
Signaling molecules such as peptide hormones and growth factors bind to receptors on the cell surface,
which subsequently triggers reactions in the cell. These reactions include ____.
a. initiation of cell division b. stopping cell division c. slowing the rate of cell division d. causing cells to enter the G0 state e. both initiation of cell division and causing cells to enter the G0 state
In order to add the gene for human insulin to a bacterial plasmid, the DNA molecules have to be "cut" with enzymes called restriction endonucleases and then pasted back together with enzymes called DNA ligases. Imagine that during this process, the first
five nucleotides of the human insulin gene were accidentally cut out before it was pasted into the bacterial plasmid. What is the most likely outcome if this plasmid was added to bacterial cells? A) The human insulin protein would not be produced because transcription would not take place since the RNA polymerase would not recognize the promoter. B) The human insulin protein would be produced as normal. C) The human insulin protein would not be produced because the start codon is missing. D) The human insulin protein would be shorter than normal because it will be missing one amino acid.