Most carnivorous plants use their prey as a primary source of
A. nitrogen.
B. energy.
C. carbon.
D. magnesium.
E. potassium.
Ans: A. nitrogen.
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Effective immunogens generally have a molecular weight of ________ or greater
A) 1,000 B) 5,000 C) 7,500 D) 10,000
Many species of gulls feed their chicks by regurgitating food. When parents return from foraging, the gull chicks peck at a red spot on the parent's bill, which causes the parents to open the bill and regurgitate their food
Chicks will peck at a red dot painted on any long, slender object. For the chicks, pecking is a ____ and the red dot is a ____ . For the adult gulls, the chicks pecking at their bills is a ____ and regurgitating food is a ____ . Fill in the blank with the appropriate word.
Lipids ____
a. yield less energy per gram than do carbohydrates b. include cartilage and chitin c. include fats consisting of three fatty-acid molecules and one glycerol molecule d. are composed of monosaccharides e. are only found in animals
The oxygen required by cellular respiration is reduced and becomes part of which molecule?
a. ATP b. H2O c. pyruvate d. CO2