Which microscope is extremely valuable for examining different layers of specimens and often involves the use of shadow casting?
a) Transmission electron microscope
b) Scanning electron microscope
c) Phase-contrast microscope
d) Darkfield microscope
Ans: a) Transmission electron microscope
Biology & Microbiology
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A strain of bacteria containing F? factor genes is called a
A. monozygote. B. heterozygote. C. homozygote. D. merozygote. E. hemizygote.
Biology & Microbiology
Hypertension can be caused by all of the following EXCEPT
a. abnormalities of the cortex of the adrenal glands. b. advanced age. c. certain medications. d. kidney disease. e. exercise
Biology & Microbiology
Which of the following is a density-dependent population-controlling factor?
A) tsunami B) influenza outbreak C) volcanic eruption D) earthquake
Biology & Microbiology
Why does the mHTT gene have such wide-ranging effects in the disease state?
What will be an ideal response?
Biology & Microbiology