Where are ion channels localized?
A) in the cytoplasm
B) on the intracellular surface of plasma membranes
C) spanning plasma membranes
D) on the extracellular surface of plasma membranes
Ans: C) spanning plasma membranes
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Which of the following was proposed by Mendel after working with garden pea plants?
a. The physical observation of a recessive trait means that the organism lacks any dominant versions of that characteristic. b. An organism’s dominant traits disappear in the offspring of a hybridization. c. The physical observation of a dominant trait means that the organism has two recessive versions of that characteristic. d. An organism’s dominant and recessive traits blend to form a codominant allele.
What is the nutrient cycle in nitrification?
a. Nitrogen, nitrate, nitrite b. Ammonia, nitrite, nitrate c. Ammonia, nitrate, nitrite d. Ammonia, nitrogen, nitrite
The smooth ER is the primary site for the synthesis of phospholipids and cholesterol needed to make ____
a. DNA b. ATP c. ribosomes d. hormones e. cell membranes
Small fishes that eat zooplankton are ________
A) primary consumers B) producers C) tertiary consumers D) secondary consumers