Which hypothesis of aging involves mitochondria?

A. gene damage by free radicals
B. external factors
C. extrinsic factors
D. whole-body process
E. damage accumulation


Answer: A

Biology & Microbiology

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Microsporocytes and megasporocytes are associated with which type of plant?

a. lichens b. gymnosperms c. liverworts d. mosses

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Explain how enzymes are regulated by feedback inhibition.

What will be an ideal response?

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Ferns and club mosses had an advantage over earlier plants because they developed

A) swimming sperm. B) mitochondria. C) flowers. D) cones. E) photosynthesis.

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A snail is a(n)

A) nematode. B) chordate. C) arthropod. D) mollusk. E) echinoderm.

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