Part of a chromosome breaks away and then reattaches to the same chromosome in reverse orientation.

a. Crossing-over
b. Inversion
c. Translocation
d. Nondisjunction
e. Deletion


Ans: b. Inversion

Biology & Microbiology

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The major mechanism of evolution is

(a) species development. (b) predation. (c) fitness. (d) natural selection.

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Match the amino acid with its abbreviation.

A) E B) R C) N D) A E) W F) D G) Y H) T I) K 1) arginine 2) lysine 3) threonine 4) tryptophan 5) tyrosine 6) asparagine 7) aspartate 8) glutamate

Biology & Microbiology

IP3 binds to _____ receptors.

A. phospholipase type-I B. G-protein coupled C. ligand-gated Ca2+ channel D. sensor kinase E. enzyme-linked

Biology & Microbiology

You are working with a specific enzyme-catalyzed reaction in the lab.  You are a very careful experimentalist, and as a result, at the beginning of each of your experiments, you measure the temperature in the lab.  On days 1 through 5, the temperature in the lab was 20oC.  Today is day 6 of your experiment, and the temperature in the lab is 30oC.  How do you predict that this will alter the rate of your enzyme-catalyzed reaction?

A. It could possibly increase or decrease the rate B. It will decrease the rate C. it will not affect the rate D. It will increase the rate

Biology & Microbiology