Ethanol, propanol, and methanol are three simple alcohols. They can be grouped together because they _____.
A. all share the same functional group: a hydroxyl
B. are soluble in water
C. are hydrophobic
D. all contain a carbonyl group
E. increase the acidity of solutions
Ans: A. all share the same functional group: a hydroxyl
You might also like to view...
Which of the following lowers the efficiency of plants' conversion of sunlight into chemical energy?
A. UV light B. UV light and O2 C. UV light, O2, and heat dissipation D. O2 and heat dissipation E. UV light and heat dissipation
Darwin observed an orchid flower with petals arranged in very long, thin tubes, rather than broad and flat, as we might see in other common flowers. What is the advantage to the orchid having an 11-inch-long nectar tube arrangement of the petals?
A. The long tube can trap insects as a source of nutrients. B. The flower can collect more sunlight for photosynthesis. C. The flower can produce nectar more easily spread over a larger area to attract more pollinators. D. The flower nectar tube can collect more rainwater to maintain health of the flower. E. The flower can only be pollinated by a specifically adapted pollinator, reducing cross-fertilization among orchid species.
What is the evaporation of water from plant tissues called?
a. guttation b. root pressure c. transpiration d. cohesion-tension
The core histones do not include
a. H1. b. H2A. c. H2B. d. H3. e. H4.