Which of the following structures is only found in animal cells when compared to plant cells?

a. cell walls
b. chloroplasts
c. mitochondria
d. golgi apparatus
e. centrioles


Answer: e. centrioles

Biology & Microbiology

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A chronic, granulomatous infection of subcutaneous tissues, which is caused by aerobic actinomycetes resulting in tissue swelling and draining sinus tracts, is referred to as:

a. actinomycetoma. b. infectious granulomas. c. lymphocytoma. d. Actinomadura.

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The products of genes that are switched on in

specific tissues at specific stages of development affect mainly a. gene replication. b. gene transcription. c. mRNA transcript processing. d. translation. e. post-translational processing of proteins

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Within ciliates, what do the micronuclei control?

a. growth b. movement c. reproduction d. cell signaling e. growth and metabolism

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In the phosphorus cycle the ultimate source of phosphorus is 

A. rock. B. dead organisms. C. plants. D. the sun.

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