These molecules are the primary building blocks of the plasma membrane in cells
A. Phospholipids
B. Proteins
C. Polysaccharides
D. Nucleic acids
Ans: A. Phospholipids
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The reduction of the microbial population to levels that are considered safe by public health standards is called
A. sanitization. B. sterilization. C. disinfection. D. antisepsis.
The oldest proglottid of a tapeworm is
(a) the scolex. (b) the one nearest its neck. (c) the one in its middle. (d) the one at its end.
If cowbird eggs are laid in an oropendola nest that is located near bee hives, 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.
Which macronutrient is responsible for the activation of enzymes in plants?
a. Sulfur b. Carbon c. Copper d. Potassium e. Zinc