Which microscope is used to see internal structures of cells in a natural state?
A) compound light microscope
B) phase-contrast microscope
C) darkfield microscope
D) fluorescence microscope
E) electron microscope
B
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Which of the following is the most likely explanation for why the human brain is capable of so much more than what would be required for evolutionary fitness?
A. The additional capabilities are by-products of what was necessary for evolutionary fitness. B. The additional capabilities were necessary for survival at one time. C. A larger brain means that additional capabilities will follow. D. None of the answer options is correct.
Answer the following statements true (T) or false (F)
1. Red algae, green algae, and plants are so closely related that they are grouped in the same supergroup by most biologists. 2. Animals and fungi are more closely related to each other than either is to plants. 3. Fungus-like protists are more related to true fungi in the supergroup Opisthokonta than they are to members of any other supergroup. 4. Protists are organisms that are generally microscopic, live in moist environments, and cannot be classified in the animal, plant, or fungal kingdoms.
Which step in gene mapping involves transformation?
A. Target DNA removed from cells and isolated B. Cloning host receives plasmid C. Target DNA and plasmid treated with the same restriction endonuclease D. Desired protein is produced by cloning host E. Gene is amplified by multiplication of cloning host
What component is located on the exterior surface of a prokaryote?
a. flagellum b. cytoplasm c. plasma membrane d. DNA e. nucleoid