The ripening of fruit and the dropping of leaves and fruit are principally controlled by _____

A) auxins
B) cytokinins
C) indole acetic acid
D) ethylene
E) carbon dioxide concentration


Answer: D

Biology & Microbiology

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When added to water at neutral pH (7.0), an acid will

a. act as a proton donor, raising the pH of the solution. b. act as a proton acceptor, raising the pH of the solution. c. act as a proton donor, lowering the pH of the solution. d. act as a proton acceptor, lowering the pH of the solution. e. do nothing since the aqueous solution is neutral.

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When calculating the gross national product, economists consider whether an activity is environmentally harmful.

Answer the following statement true (T) or false (F)

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Identify and briefly describe the two phyla of seedless vascular plants. Include one or two

representatives of each phylum. What will be an ideal response?

Biology & Microbiology

Which membrane enclosed organelles most likely evolved in a similar manner?

A.) mitochondria and ER B.) chloroplasts and peroxisomes C.) mitochondria and the golgi apparatus D.) the nucleus and ER E.) mitochondria and nucleus

Biology & Microbiology