__________ are open channels that connect the
cytoplasm of abutting cells and permit rapid transfer
of ions and small molecules between them. Fill in the blank(s) with the appropriate word(s).
Answer: Gap junctions
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ALL stratified lakes contain a thermocline
Indicate whether the statement is true or false.
If cowbird eggs are included in an oropendola nest in the open woodlands of Central America, what
would be the expected outcome?
a. The cowbird eggs would be ejected from the nest to eliminate the competition. b. The cowbird eggs would be ejected from the nest due to a reaction of the mother bird's immune system. c. The cowbird eggs would not be ejected from the nest because they provide an additional food source. d. The cowbird eggs would not be ejected from the nest because they provide protection from large predators. e. The cowbird eggs would not be ejected from the nest because they provide protection from parasites.
The first level of inquiry in making a systematic
survey of biodiversity is carried out a. at the ecoregion level. b. among the riparian zones. c. in hot spots. d. at the regional research station. e. on a global scale.
A molecule that is a capable of releasing or donating a hydrogen ion is termed a(n) ____.
A) acid B) hydrion C) pain D) base E anachronism