How does long distance communication work?
What will be an ideal response?
Ans: Endocrine hormones travels through the signal transduction pathway to initiate a response in the cell
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Select all of the following that are characteristics of crustaceans.
_____ two pairs of antennae. _____ antennal glands. _____ maxillary glands ._____ calcium carbonate deposited in the exoskelton. _____ external fertilization.
Fire ants, Solenopsis invicta, ________
a. have no natural enemies b. disrupt natural communities when introduced c. have a sting that is usually fatal d. are native to the United States
Weather and climate differ from each other because
a. the effect of weather is temporary whereas the effect of climate is not. b. weather determines the diversity of organisms in an area. c. weather is local and climate is global. d. weather determines climate. e. man can affect weather but not climate.
All of the following are polysaccharides EXCEPT
A) glucose. B) starch. C) chitin. D) glycogen.