The set of proteins in a particular cell type is always equal to the number of genes in the genome
a. True
b. False
Indicate whether the statement is true or false
False
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How were experiments done by Griffith similar to those done by Avery, MacLeod, and McCarty?
A. Both used a mouse host. B. Both used pneumococcal bacteria. C. Both used purified DNA. D. Both were done in the 1940s. E. Both used enzymes that destroyed DNA.
Which two molecules are used to make cell membranes?
a) carbohydrates and glycogen b) polysaccharides and nucleic acids c) phospholipids and starch d) phospholipids and proteins e) nucleic acids and lipids
A group of geneticists exposed the seeds of a dicot plant to various levels of radiation in order to induce random mutations. Many of the irradiated seeds failed to germinate
Some of the seeds, however, germinated in the lab and were carefully studied. The scientists discovered a mutation that prevents the formation of a hypocotyl hook during germination. Based on this scenario, the mutant plant most likely germinated A) but was unable to photosynthesize. B) but damage to the cotyledons prevented the seedlings' emergence from the soil. C) but the mutated hypocotyl hook caused damage to the emerging root tip. D) and grew like a normal plant. E) but the mutated hypocotyl hook failed to push the cotyledons above the soil.
Which method would be the MOST powerful approach to isolating a single mutant from a population of billions?
a. assay for the loss of function b. replica plating c. selection for a gain of function d. screen for the mutant