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Cell membrane: Quiz


Question 1: For example, a hormone binding to a receptor could open an ________ in the receptor and allow calcium ions to flow into the cell.
Potassium channelIon channelLigand-gated ion channelSodium channel

Question 2: These structures, which can be visualized by ________ or fluorescence microscopy, can be found on the inside of the membrane, the outside, or membrane spanning.
Electron microscopeGoldScanning electron microscopeTransmission electron microscopy

Question 3: [6] These proteins are undoubtedly important to a cell: Approximately a third of the ________ in yeast code specifically for them, and this number is even higher in multicellular organisms.

Question 4: The cell membrane consists of three classes of amphipathic lipids: phospholipids, glycolipids, and ________.
Lipid metabolismMetabolismTestosteroneSteroid

Question 5: In fungi, some ________, and plants, an additional cell wall forms the outermost boundary; however, the cell wall plays mostly a mechanical support role rather than a role as a selective boundary[citation needed].
Gram-positive bacteriaGram-negative bacteriaCorynebacteriumBacteria

Question 6: As such, a large variety of protein receptors and identification proteins, such as ________, are present on the surface of the membrane.
Polyclonal B cell responseAntigenImmune systemPhagocyte

Question 7: These may include integrins, ________, desmosomes, clathrin-coated pits, caveolaes, and different structures involved in cell adhesion.

Question 8: The membrane may form blebs around extracellular material that pinch off to become vesicles (________).
EndocytosisEfferocytosisPhagocytosisReceptor-mediated endocytosis

Question 9: Permeability depends mainly on the ________ of the molecule and to a lesser extent the molar mass of the molecule.
Magnetic fieldElectromagnetismElectric currentElectric charge

Question 10: [2] It contains a wide variety of biological molecules, primarily proteins and ________, which are involved in a variety of cellular processes such as cell adhesion, ion channel conductance and cell signaling.

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