Microbes today are used in many ways to help improve our lives. Which of the following is NOT a contribution by microbes?
tofu
laundry detergent
antibiotics
vitamins
tofu
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Antimicrobial peptides are produced by host cells and by microbes that invade host cells.
Answer the following statement true (T) or false (F)
In a test tube, a particular DNA polymerase has an error rate of 1 mistake in every 106 bases copied. Why is the mutation rate in a cell that uses this DNA polymerase much lower?
A) The polymerase is more careful in replicating regions where genes exist. B) Repair mechanisms correct errors made by the polymerase. C) Not all mutations can be detected easily. D) The DNA polymerase has no proofreading function. E) Mutations do not occur if mutagens are not present.
The overall error rate in translation is low, approximately one wrong amino acid for every 104 or 105 incorporated. What stages in tranlsation can introduce errors and which of these is the weak point in translation?
What will be an ideal response?
Thyroid hormone is to amphibian metamorphosis as this compound is to insect molting.
A. cortisol B. ecdysone C. aldosterone D. butterfly peptide E. estrogen