Which of the following is incorrect about eukaryotes?
A. They have chromosomes.
B. They have internal compartmentalization.
C. They may have flagella.
D. They divide by binary fission.
Answer: D
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You analyze two daughter cells of Bacteria A immediately after binary fission. Which of the following is ACCURATE about the daughter cells?
A. They have genetic contributions from two different parent cells. B. They are members of the same colony. C. They have genetically identical chromosomes. D. They are members of the same colony and have genetically identical chromosomes. E. They are members of the same colony and they have genetic contributions from two different parent cells.
Select the pair in which the nitrogenous waste is INCORRECTLY matched with the benefit of its excretion.
A. urea: low toxicity relative to ammonia B. uric acid: can be stored and excreted as a precipitate C. ammonia: very soluble in water D. uric acid: minimal loss of water when excreted E. urea: very insoluble in water
Vampire squid (Vampyroteuthisinfernalis) are deep-sea cephalopods with features similar to both octopus and squid. Extensive video recordings show the diet of the vampire squid consists of items like crustacean remains and fecal pellets. Which of the following terms describes the position of the vampire squid in the deep-sea trophic pyramid?
A. secondary carnivore B. primary producer C. detritivore D. herbivore E. primary carnivore
The specialized cells in the nervous system that serve to conduct a signal are known as
A. neuroglia. B. dendrocytes. C. Schwann cells. D. astrocytes. E. neurons.