All of the following are types of light microscopes EXCEPT
A) fluorescent.
B) confocal.
C) phase-contrast.
D) scanning tunneling.
E) bright-field.
D
Bloom's Taxonomy: Comprehension
Section: Microscopy
Learning Outcome: 4.9, 4.11
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Which of the following enzymes is responsible for initiating certain types of base excision repair?
A. DNA polymerase B. DNA ligase C. AP endonuclease D. DNA uracil glycosylase E. None of the answer options is correct.
You are a genetic counselor, and a couple comes to you with concerns that if they have a child
together it could have hemophilia. The woman has an X-linked recessive form of hemophilia, but the man does not. Which of the following would be a correct thing to tell them?
a. Any child that they produce will have a 50% chance of having hemophilia. b. All of their male offspring will have hemophilia, and each of their female offspring will have a 50% chance of having hemophilia. c. None of their offspring should have hemophilia, but all of their female offspring will be carriers for hemophilia. d. Each of their male offspring will have a 50% chance of having hemophilia, and while their female offspring should not have hemophilia they will each have a 50% chance of being carriers. e. All of their male offspring will have hemophilia, and while their female offspring should not have hemophilia, they will all be carriers.
The most primitive group of animals that had lungs were the:
a. amphibians. b. ray-finned fish. c. reptiles. d. birds. e. tunicates.
________ discovered that soil bacteria could oxidize iron, sulfur, and ammonia to obtain energy.
Fill in the blank(s) with the appropriate word(s).