The covalent bonds connecting monomer units in sugars can be formed by the removal of a water molecule. This reaction is referred to as:
A. a dehydration reaction.
B. a hydration reaction.
C. a hydrolysis reaction.
D. an oxidation-reduction reaction.
Answer: A
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Refer to Figure 51-3. The chorion is identified by number:Refer to Figure 51-3. The chorion is identified by number:
a.
1.
b. 2.
c. 3.
d. 4.
e. 5.
You light a scented candle in the guest bathroom. Within a few minutes you can already smell the candle’s scent
throughout the hallway. What process is occurring? a. dialysis b. osmosis c. simple diffusion d. active transport e. facilitated diffusion
The first organisms to colonize land were
A) plants, protists, and insects B) plants, fungi, and insects C) bacteria, plants, and fungi D) protists, bacteria, and fungi
Which of the following is a characteristic of tundra?
A. permafrost B. more than 100 cm of rain a year C. deciduous forests D. temperate climate E. high biodiversity