Artemia, brine shrimp
a. are aquatic organisms.
b. live in salty ecosystems.
c. are filter-feeding primary consumers.
d. are all of the above..
b
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Which organism(s) is/are acid-fast?
A. Nocardia B. Pseudomonas C. E. coli D. Mycobacterium E. Nocardia AND Mycobacterium
Regarding transitions between stages of the cell cycle, scientists have
a. already discovered many of the proteins involved b. figured out how the proteins communicate with each other c. determined how the proteins operate as small nano-machines to perform their functions d. shown that mammalian cells are easier to work with than Saccharomyces cerevisiae e. no idea which proteins are needed
A substance is most likely to diffuse into a cell when
(1) it is a large organic food molecule such as protein or starch (2) it is enclosed in an organelle such as a vacuole (3) the concentration of the substance is greater outside the cell than inside (4) the pH of the substance is greater than the pH of the cell
Though you were not on earth at the time, if you had to predict the method of reproduction utilized by the earliest organisms on this planet, which of the following choices would you select?
a) alternating between sexual and asexual reproduction b) reproduction by duplicating their DNA material and dividing in two c) sexual reproduction as it is seen in current eukaryotic organisms d) None of the above are correct; the earliest organism most likely did not reproduce. e) None of the above are correct, a combination of fission and fusion occurred.