A) Lipid vesicles or liposomes B) Glycoproteins C) Protein channels D) Cell wall
A) By mixing lipids with proteins directly B) Through spontaneous folding of phospholipids C) By freezing and thawing a lipid mixture D) By suspending a lipid in an aqueous solution and agitating it through sonication
A) DNA replication B) Energy storage C) Cell-cell recognition D) Protein synthesis
A) Glucose B) Galactose C) Sialic acid D) Fructose
A) Negative; an external barrier to charged particles B) Positive; a structural support for the membrane C) Neutral; no significant function D) Variable; it changes based on pH
A) Around 50% B) 75% C) 10% D) 25%
A) G-protein coupled receptors B) Ion channels C) Lipid-anchored proteins D) Protein pumps
A) Bind hormones and neurotransmitters B) Allow protons to travel through the membrane by transferring from one amino acid side chain to another C) Facilitate passive diffusion of ions D) Transport glucose into cells
A) A type of ion channel B) A structural component of the cytoskeleton C) A single polypeptide chain that crosses the lipid bilayer seven times responding to signal molecules D) An enzyme that synthesizes ATP
A) Lipid rafts B) An N-terminus "signal sequence" of amino acids C) Cholesterol molecules D) Glycosylation process
A) It prevents any substances from entering or exiting the cell B) It allows all substances to freely enter and exit the cell C) It acts as a selectively permeable barrier regulating what enters and exits the cell D) It only regulates the entry of water
A) Only applicable to large molecules B) Transport requiring ATP C) A process that occurs only in prokaryotes D) Movement of substances across the membrane without cellular energy input
A) The movement of a solvent through a semipermeable membrane from high to low concentration B) Movement of solutes against their concentration gradient C) A process exclusive to gases D) Active transport requiring energy
A) Bind hormones for signal transduction B) Synthesize proteins C) Facilitate passive diffusion of water across cell membranes D) Transport ions actively
A) Extrusion of cell waste products B) Passive diffusion of small molecules C) The process by which cells absorb molecules by engulfing them D) Synthesis of membrane lipids
A) Extrusion of cellular contents B) Active transport of glucose C) Passive transport of ions D) A form of endocytosis involving the engulfing of solid particles
A) The process by which vesicles fuse with the plasma membrane to release their contents outside the cell B) Endocytosis of macromolecules C) Active transport of ions D) Passive diffusion of water
A) Movement of molecules against their concentration gradient B) Transport of substances across a membrane through protein channels or carriers without energy expenditure C) A process that does not involve membrane proteins D) Only applicable to large proteins
A) Sterols B) Glycolipids C) Integral proteins D) Peripheral proteins
A) 1935 B) 1895 C) 1925 D) 1972
A) Lipid bilayer hypothesis B) Monolayer hypothesis C) Fluid mosaic model D) Paucimolecular model
A) Ectoplast B) Cell envelope C) Plasmalemma D) Hautschicht
A) Phospholipids B) Glycolipids C) Sterols D) Cholesterol
A) Amorphous B) Solid crystalline C) Liquid crystalline D) Gaseous
A) Animals B) Fungi C) Bacteria D) Plants
A) Cellulose B) Peptidoglycan C) Chitin D) Lipopolysaccharides
A) Archaea B) All prokaryotes C) Gram-negative bacteria D) Gram-positive bacteria
A) Ionic bonding B) Covalent bonding C) Self-assembly D) Hydrogen bonding
A) Both head and tail regions B) Tail regions C) Head regions D) Neither head nor tail regions
A) Covalent bonds B) Ionic interactions C) Hydrophobic interactions D) Van der Waals forces
A) Focal adhesions B) Mitochondria C) Podosomes D) Caveolae
A) Actin B) Microtubules C) Intermediate filaments D) Collagen
A) Plasmalemma B) Oolemma C) Axolemma D) Sarcolemma
A) Zona pellucida B) Plasma membrane C) Sarcolemma itself D) Fertilization envelope
A) Granular layer B) Zona pellucida C) T-tubules D) Fertilization envelope
A) Axolemma B) Oolemma C) Plasmalemma D) Sarcolemma
A) Fertilization envelope B) Zona pellucida C) Axolemma D) Sarcolemma
A) Sarcolemma B) Axolemma C) Oolemma D) Plasmalemma |