Which term refers to an electromagnetic radiation that is of the longest wavelength and lowest energy?
a. radio waves
b. gamma rays
c. UV light
d. X-rays
Answer: a. radio waves
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At the ________ level, an ecologist might focus on the factors that affect the relative abundance of various populations in the area
Fill in the blank(s) with correct word
In comparison to eukaryotes, prokaryotes _____
A) are more structurally complex B) are larger C) are smaller D) do not have membranes
In addition to seeds, which of the following characteristics is unique to the seed-producing plants?
A) sporopollenin B) lignin present in cell walls C) pollen D) megaphylls
In what way are the essential amino acids different from nonessential amino acids?
A) Essential amino acids cannot be made and must be obtained from food. B) Nonessential amino acids are not absorbed by the digestive tract. C) Nonessential amino acids are not necessary for any proteins we make. D) Essential amino acids are the ones exclusively used to make enzymes.