All of the following are reasons why some scientists believe that the term "prokaryote" is a somewhat artificial designation and should be discarded except
A. Some bacteria have 80S ribosomes.
B. Some bacteria have their genetic material enclosed within a membrane.
C. Some bacteria have internal membranous structures.
D. Many bacterial have cytoskeletal elements.
Answer: A
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The process of emulsification is crucial to the digestion of
A. carbohydrates. B. lipids. C. nucleic acids. D. proteins. E. bile salts.
The archaeplastida includes all of the following EXCEPT
a. red algae b. land plants c. diatoms d. green algae e. charophytes
Actin is a structural subunit of
a. myosin. b. microtubules. c. intermediate filaments. d. microfilaments. e. all of these.
Which of the statements below is true about
warfarin? a. It is a very effective rodenticide. b. It interferes with blood clotting in rats. c. Rats that are resistant to warfarin possess a gene that is rare among vulnerable rats. d. It is an agent of natural selection in rats. e. All of these are true.