Filtration methods, followed by growth of the bacteria trapped on the filters in growth media, are used to count bacteria present in very low concentrations, such as in lakes and streams
Indicate whether the statement is true or false
TRUE
Biology & Microbiology
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Ever since the antibiotic drug penicillin was discovered in 1928, the incidence of resistant bacteria has steadily increased as a direct result of
(a). biodiversity. (b). natural selection. (c). homeostasis. (d). development. (e). reproduction.
Biology & Microbiology
In the accompanying figure, the part of the embryo that contains most of the food used by the embryonic plant during germination is labeled with the number:
a. 2
b. 3
c. 4
d. 5
e. 6
Biology & Microbiology
Which chamber of the heart does the blood first enter when it returns from the pulmonary circuit?
a. the left ventricle b. the right ventricle c. the right atrium d. the left atrium
Biology & Microbiology
Identify the labeled structures in the cross section of a human penis in the picture.
What will be an ideal response?
Biology & Microbiology