The ____ ion is required for ribozymes to become active and begin self-replication
a. ferrous iron
b. ferric iron
c. zinc
d. magnesium
Chapter 25 - The Origin of Life
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e. selenium
ANSWER: d
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The regulation of protein function is called ______
A. posttranslational regulation B. transcriptional regulation C. translational regulation D. posttranscriptional regulation
For which of the following diseases would animal models likely yield the most information?
a. alcoholism b. schizophrenia c. bipolar disorder d. Huntington disease e. nicotine addition
Both a spore and a gamete are reproductive cells that develop into a new plant by themselves.
a. true b. false
In which PO2 environment would hemoglobin most easily release its O2?
A. 65 mmHg B. 100 mmHg C. 75 mmHg D. 90 mmHg E. 40 mmHg