Endosymbiotic theory is best supported by which characteristics of cells?
A) organelles with their own DNA
B) double membrane organelles
C) organelles that have bacteria-like properties
D) all of these
Ans: A) organelles with their own DNA
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The first detailed and quantitative studies on inheritance were carried out by an Austrian monk named _____.
A. Mendel B. Darwin C. Mendeleev D. Benedict
The unique antigenic determinants of the 90 serotypes of Streptococcus pneumoniae are found
A) on the cell-surface M proteins. B) on the capsular polysaccharides. C) in the bacterial cell wall. D) in the inclusions in the periplasmic space.
Which of the following is released when an aminoacyl-tRNA synthetase charges a tRNA?
A. mRNA B. ATP C. AMP D. pyrophosphate E. AMP and pryophosphate
Deviations from __________ indicate that a
population is evolving. Fill in the blank(s) with the appropriate word(s).