Which pair of values best fills in the blanks in this statement: On average, eukaryotic cells are __________ times longer and have _________ times more volume than prokaryotic cells
(a) 5, 100
(b) 10, 200
(c) 10, 100
(d) 10, 1000
(d)
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the following pedigree, the indicated trait most likely is caused by which type of allele?
A) autosomal recessive
B) autosomal dominant
C) X-linked recessive
D) X-linked dominant
E) Y-linked
Endemic means a species
a. originated in one geographic region and lives nowhere else. b. could cause an epidemic at any time. c. is on its way to extinction. d. can live in only one habitat. e. is extinct.
A group is experimenting with selection in an insect species due to exposure to a newly developed insecticide, cpd AW143. The group has found that after 10 generations of exposure, the population is now bimodal in its response to the drug
Close to 30% of the population are completely normal while 70% live only about 1/6 of the normal lifetime. This is an example of __________. A) threshold effect B) stabilizing selection C) additive genes D) directional selection E) disruptive selection
After the work of Schleiden and Schwann was well known in the scientific community, Rudolph Virchow concluded which of the following was also true that became the final statement of the modern cell theory?
A. That all plants and animals studied to that time were composed of cells. B. That all cells were either plant or animal cells. C. That all cells were alike regardless of what type of organism they were found in. D. That all cells come only from pre-existing cells.