Because they interfere with metamorphosis, ecdysone inhibitors could be effective as insecticides
Indicate whether the statement is true or false.
ANSWER: True
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Microorganisms assimilate large amounts of all of the following except ________ into organic molecules.
A. sodium B. phosphorus C. nitrogen D. sulfur
In DNA, the most important reason adenine does not ever pair up with cytosine is that: a. There is a size problem that prevents pairing. b. Adenine bonds with two hydrogen bonds, and cytosine bonds with threehydrogen bonds
c. Adenine bonds with three hydrogen bonds and cytosine bonds with two hydrogenbonds. d. Adenine can occasionally bond with cytosine.
What explanation is generally given for lethality of monosomic individuals?
What will be an ideal response?
What is a challenge that organisms living in an intertidal zone face that other aquatic organisms normally do not face?
A. damage from pollution B. changes in temperature at different depths C. movement of water D. light penetrating only through the photic zone E. daily changes in water depth