Why is it more difficult to treat viral infections than it is to treat bacterial infections?
a. Viruses are very similar to human cells.
b. Viruses have cell walls.
c. Viruses are smaller than human cells.
d. Viruses use the host cell's processes to carry out their own reproduction.
Answer: d. Viruses use the host cell's processes to carry out their own reproduction.
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Which of the following is an assumption used in the molecular clock approach?
A) Nucleotide changes accumulate in a sequence in proportion to time. B) Nucleotide changes are generally NOT transferred to progeny. C) Nucleotide changes are NOT random. D) Nucleotide changes are subject to intense selective pressure.
ome enzymes do not work properly or at all without the presence of a cofactor or coenzyme. Which of the following is a class of known important coenzymes?
a. hydroxides b. amino groups c. vitamins d. assistins
Many viruses are helped along in generating antibody-evading capsid protein variations by replication error
Indicate whether the statement is true or false
The concept of evolution has always been connected with some notion of progress–natural selection pushing populations toward better and better adaptations to create "perfect organisms." How would you argue that evolution does not craft perfect
organisms? What will be an ideal response?