Choose the letter of the best match from the following:A. hotspotB. habitat lossC. edge effectsD. megafaunal extinctionE. extinction vortexAlmost all the large mammals disappeared from North America by about 10,000 years ago.

Fill in the blank(s) with the appropriate word(s).


Answer: D

Biology & Microbiology

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During a laboratory experiment, you discover that an enzyme-catalyzed reaction has a ?G of -20 kcal/mol. If you double the amount of enzyme in the reaction, what will be the ?G for the new reaction?

A) -40 kcal/mol B) -20 kcal/mol C) 0 kcal/mol D) +20 kcal/mol E) +40 kcal/mol

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Two or more atoms bonded together are called a(n) ________.

A. ion B. molecule C. element D. isotope E. electrolyte

Biology & Microbiology

enzymes produced by the pancreas

What will be an ideal response?

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Plants grow toward light through the action of

A) hormones. B) nerves. C) phytochrome. D) chloroplasts.

Biology & Microbiology