What happens to a cell that is carrying damaged DNA if both of its TP53 alleles become inactivated?
a) It lacks the genetic integrity required for controlled growth.
b) It lacks the genetic integrity required for uncontrolled growth.
c) It fails to be destroyed.
Ans:
a) It lacks the genetic integrity required for controlled growth.
c) It fails to be destroyed.
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Which of the following is an example of post-translational modification? (Select all correct choices)
A. Digestive proteins are translated into inactive forms that can be activated at a later time and/or in a different place. B. Chaperone proteins help newly translated proteins achieve the appropriate tertiary structure. C. Proteins are modified by the replacement of one or more amino acids by sugars, which may then target the protein to a specific cell compartment.
The role of a control in an experiment is to
A) provide a basis of comparison to the experimental group. B) prove that a hypothesis is correct. C) ensure repeatability.
Psilocybin is a
A. toxin that causes bloody diarrhea. B. toxin that causes kidney failure. C. toxin that acts as a hallucinogen. D. virulence factor produced by invasive fungi. E. growth factor produced by mycoplasmas.
Answer the following statements true (T) or false (F)
1. Dehydration synthesis reactions always involve the removal of a molecule of water. 2. The biosynthesis of polysaccharides, polypeptides, and nucleic acids are examples of catabolic reactions. 3. Oxidation–reduction reactions are paired reactions that involve the transfer of electrons. 4. Breaking a disaccharide down into its two monosaccharide components is an example of a hydrolysis reaction. 5. Anabolic reactions are a cell's major source of energy.