Imagine that Aperture Laboratories produces a toxin, which degrades all tRNAs present in a cell. Which of the following processes would be directly inhibited by this toxin?
A. Transcription
B. Translation
C. DNA replication
D. None of the above
Ans: B. Translation
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DNA is wrapped around histones, which contain many copies of the positive amino acids lysine and arginine. These positive amino acids neutralize the negative charge of the ______________ of the DNA wrapped around the histone
A. ribose sugar B. hydroxyl group C. nitrogenous base D. phosphate group E. All of the answer options are correct.
Enzymes speed up a chemical reaction by ____
a. lowering the activation energy b. lowering the optimal pH c. increasing the reaction temperature d. increasing the energy in the system e. increasing the activation energy
If the mother's genotype is aa, all of her eggs will be identical for this trait.
Answer the following statement true (T) or false (F)
Both smooth muscle fibers and cardiac muscle fibers:a
have striations. b. are under involuntary control. c. are multinucleate. d. have a comparable intermediate resistance to fatigue. e. have a comparable intermediate speed of contraction.