What name is given to the following reaction? glycerol + 3 fatty acids ? triglyceride + 3 water molecules
A) glycolysis
B) hydrolysis
C) hydrogenation
D) dehydration
D
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Most of the active functions of plasma
membranes are carried out by
a. cholesterol. b. proteins. c. hydrophilic heads. d. hydrophobic tails. e. carbohydrates
A phospholipid has a hydrophilic head and two hydrophobic tails.
a. true b. false
________ occurs when an external signal does NOT directly enter the cell but instead is detected by a sensor that transmits it to the rest of the regulatory machinery
a. Quorum sensing b. Sensory transduction c. Signal transduction d. Two-component regulation
Which statement best describes the relationship between a carpel and a pistil?
A. A pistil is part of the female component of a flower and a carpel is not even a flower part at all. B. The two terms are merely two names for the same thing. C. A pistil is part of a male component of the flower whereas a carpel is part of a female component. D. A pistil is a reproductive part of a flower whereas a carpel is a showy vegetative part. E. A pistil can be composed of either a single carpel (in which case the two terms are synonymous) or of two or more carpels fused together.