GRE Subject Test: Biochemistry, Cell, and Molecular Biology : Help with Other Membrane Functions
Study concepts, example questions & explanations for GRE Subject Test: Biochemistry, Cell, and Molecular Biology
All GRE Subject Test: Biochemistry, Cell, and Molecular Biology Resources
Example Questions
Example Question #11 : Cell Membrane And Cell Wall
Which of the following is not a method used to transport substances into a cell?
Exocytosis
Phagocytosis
Pinocytosis
Receptor-mediated endocytosis
Exocytosis
Endocytosis is the process by which substances from the external environment are encapsulated in vesicles and brought into the cell. Receptor-mediated endocytosis uses membrane receptors to help localize the formation of the trasnport vesicle. Pinocytosis uses vesicles to transport fluids into the cell, while phagocytosis uses vesicles to bring pathogenic debris into the cell for digestion.
Exocytosis, in contrast, is the expulsion of substances from the cell via a transport vesicle.
Example Question #1 : Help With Other Membrane Functions
Every cell membrane has protein channels that allow certain molecules to pass through.
Which acronym is used to explain the concentration gradient of sodium (Na+) and potassium (K+) inside and outside the cell membrane?
HIKIN'
KADE
TIRE
I'm A People Person
SOAP
HIKIN'
"HIKIN'" represents the statements "there is a HIgh K concentration INside the cell."
"KADE" is used to remember the vitamins that are fat soluble: vitamins K, A, D, and E. "I'm A People Person" refers to the four-point physical assessment of a disease: Inspection, Auscultation, Percussion, Palpation. SOAP is the acronym for Subjective, Objective, Assessment, and Plan—a way to organize patient examination information. TIRE is an mnemonic for remembering the four abdominal muscles: transversus abdominis, internal abdominal oblique, rectus abdominis, external abdominal oblique.
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All GRE Subject Test: Biochemistry, Cell, and Molecular Biology Resources
