Staining with dye is a technique typically used to enhance contrast and visualization of cellular structures. Which microscope magnifies passing light directly through a specimen?
a. a fluorescence microscope
b. a bright field microscope
c. a confocal laser scanning microscope
d. a phase-contrast microscope
Ans: b. a bright field microscope
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Molecules that come from the food we eat provide energy for the amazing work that goes on inside of our cells. This energy, stored inside of our food, is a form of _____ .
A) potential energy called chemical energy B) potential energy called entropy C) kinetic energy called heat D) electrical energy called heat
Avocado sunblotch is caused by a
A) bacterium. B) prion. C) virus. D) viroid. E) fungus.
The most common DNA-binding motif is the
A. leucine zipper. B. zinc finger. C. nonhelical zipper. D. homeodomain. E. helix-turn-helix.
MacConkey agar is selective for Haemophilus influenzae
Indicate whether the statement is true or false