A capillary wall cell membrane brings in particles dissolved in liquid by pinching off part of the membrane. This process would best be described as:

exocytosis

pinocytosis

cytolysis

phagocytosis

Answer and Explanation

The Correct Answer is B

A. exocytosis: This is the process of expelling material out of the cell, not taking it in.
B. pinocytosis: Pinocytosis is "cell drinking"-the process of engulfing dissolved particles in fluid by invagination of the plasma membrane.
C. cytolysis: Cytolysis refers to cell bursting, not intake of particles.
D. phagocytosis: Phagocytosis is "cell eating", where the cell engulfs large solid particles like bacteria, not liquids.

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Correct Answer is B

Explanation

A. homozygous recessive: That would be written as ww - both alleles being recessive.
B. homozygous dominant: WW means both alleles are dominant-this is homozygous dominant.
C. heterozygous dominant: That would be Ww-one dominant and one recessive allele.
D. heterozygous recessive: There is no such term; heterozygous always means one dominant and one recessive.

A. triglycerides B. eicosanoids C. steroids D. phospholipids

Correct Answer is D

Explanation

A. triglycerides: Triglycerides are stored in fat cells, not a major component of membranes.
B. eicosanoids: These are signaling molecules, not structural components of the plasma membrane.
C. steroids: While cholesterol (a steroid) is present in membranes, it's not the most abundant.
D. phospholipids: The plasma membrane is primarily made of a phospholipid bilayer, forming the main structural framework.

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A capillary wall cell membrane brings in particles dissolved in liquid by pinching off part of the membrane. This process would best be described as:

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Naxlex Comprehensive Predictor Exams

The genotype WW is best described as

Correct Answer is B

Explanation

I am in the laboratory separating plasma membranes from the cytoplasm in cell cultures. Using my ultra high powered scanning electron microscope to look at the plasma membrane samples, which of the following would you expect to see in greatest abundance?

Correct Answer is D

Explanation

Channels that open due to a compound binding to receptor sites on the extracellular surface of the channels would be considered: non gated ion channels

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