Sponges are found ________

A) only in seawater
B) mostly in seawater
C) only in fresh water
D) mostly in fresh water


B

Biology & Microbiology

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You get up in the middle of the night to get a drink of water and stub your left toe on the

dresser. You reach down to rub your toe with your right hand. The sensory input from this activity is received by the __________ side of the brain, and the motor output involved with rubbing your toe is controlled by the __________ side of the brain.

a. right; left b. left; right c. right; right d. left; left

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What maintains the secondary structure of a protein?

A) Ionic bonds B) Disulfide bonds C) Hydrogen bonds D) Peptide bonds

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Which of the following compounds is NOT an enzyme?

A) dehydrogenase B) cellulase C) coenzyme A D) ?-galactosidase E) sucrase

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What traits do green algae and plants have in common?

A. embryos B. chlorophyll a and b C. plastids D. a sporic life cycle E. beta-carotene

Biology & Microbiology