Which of the following is a major difference between prokaryotic cells and eukaryotic cells?
A) Prokaryotes have cells while eukaryotes do not.
B) Eukaryotic cells have more intracellular organelles than prokaryotes.
C) Prokaryotes are not able to carry out aerobic respiration, relying instead on anaerobic metabolism.
D) Prokaryotes are generally larger than eukaryotes.
B
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Which of the following systems is the most stable in terms of species composition and distribution?
A. populations B. communities C. ecosystems D. biomes E. trophic pyramids
Why are children often told that if they eat too much candy their teeth will fall out?
A. Sugar attacks tooth enamel. B. Sugars gradually replace the tooth enamel. C. Bacteria use the sugar to make ATP. This fermentation process produces acids as a by-product. D. Bacteria secrete acids in order to digest the sugar molecules. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know sugars? How does it relate to the question? · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
Which of the following scientist-discoveries is mismatched?
A. Watson, Crick, Wilkins, and Franklin-DNA structure. B. Avery, MacLeod, and McCarty-DNA is the genetic material. C. Meselson and Stahl-mechanism of DNA replication. D. Griffith-chromosomes.
Which of the following is classified as a trace element in the human diet?
a. potassium b. iron c. sulfur d. magnesium e. sodium