Which feature would exclude a newly discovered organism from being categorized as a protist?
A. Having cellulose cell walls
B. The absence of a nuclear envelope
C. Lacking functional mitochondria
D. Using pseudupodia for locomotion
Answer: B
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Which of the following evidence most strongly supports the common origin of all life on Earth? All organisms _____
A) require energy B) use essentially the same genetic code C) reproduce D) show heritable variation E) evolve
Pericardial fluid may be inoculated in blood culture broth and processed as a blood culture, provided the broth contains which anticoagulant?
a. Heparin b. Ethylenediaminetetraacetic acid (EDTA) c. Citrate d. Coumadin
You notice that in your aquarium, previously full of undoubtedly male fish, one is laying eggs. Upon a bit of research, you find out that the species of fish you purchased is a sequential hermaphrodite. Which of the following is true?
A. One of the male fish underwent protandry and became a female. B. One of the male fish fertilized its own eggs. C. Since the fish are hermaphrodites, one of the male fish laid eggs and another will likely fertilize them. D. The fish have parthenogenesis, therefore their eggs do not have to be fertilized to be viable. E. The fish have protogyny, which allows the males to lay eggs. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about different reproductive strategies? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
All living things, except bacteria and archaea, are eukaryotes
a. true b. false