BC-Membrane Structure & Function
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The term for membranes which allow some molecules to pass through while blocking passage of other molecules. | show 🗑
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| Another name for passive transport. | show 🗑
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| show | isotonic
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| show | Hypotonic
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| Small sacs (circles) of membrane are called _______. | show 🗑
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| show | Osmosis
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| Which region of the phospholipid molecule is hydrophyllic? | show 🗑
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| Is it the proteins or the fatty acid tails which are responsible for giving the "Fluid Mosaic Model" of the plasma membrane its MOSAIC portion of the name? | show 🗑
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| show | The solution surrounding the cell is considered hypertonic .
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| Does diffusion move molecules down or up the concentration gradient? | show 🗑
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| show | Endocytosis
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| In a solution consisting of salt dissolved in water, which is the solute? | show 🗑
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| Which region of the phospholipid molecule are hydrophobic? | show 🗑
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| This term describes conditions when the solute concentration is greater. | show 🗑
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| show | Active Transport
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| A cell with an internal salt concentration of 0.1% salt is placed in a solution of 0.2% salt solution. Which way will water move, into or out of the cell? | show 🗑
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| show | Passive Transport
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| Is the glycerol head of a phospholipid molecule polar or non-polar? | show 🗑
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| show | Exocytosis
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| A cell with an internal salt concentration of 0.3% salt is placed in a solution of 0.2% salt solution. Which way will water move, into or out of the cell? | show 🗑
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| show | They will pack tightly together.
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| show | They will not pack tightly together.
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| show | Peripheral proteins
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| show | Integral proteins
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| show | Transmembrane proteins
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| HIV uses which types of membrane protein to attach to immune cells? | show 🗑
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| These membrane carbohydrates have lipids bonded to them. | show 🗑
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| show | Glycoproteins
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| show | Nonpolar; hydrophobic
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| Molecules like sugars and water are _____ and _____ and cannot pass easily through the membrane. | show 🗑
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| show | Aquaporins
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| show | Hydrophobic
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| show | Hydrophyllic
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| show | Channel
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| show | Carrier
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| What are the two types of transport proteins? | show 🗑
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| show | Diffusion
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| _______ transport moves molecules against their concentration gradient and uses carrier proteins. | show 🗑
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| _______ diffusion uses membrane proteins and no ATP energy to move molecules down the concentration gradient. | show 🗑
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| In osmosis water will always move _______ the hypertonic solution across the membrane. | show 🗑
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| Plant cells become ______ or firm when placed in a hypotonic solution. | show 🗑
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| What portion of the plant cell is responsible for the fact that the cell does not burst when placed in a hypotonic solution? | show 🗑
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| show | Flaccid
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| show | Plasmolysis
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| show | Phagocytosis
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| ______ is a type of endocytosis in which a cell obtains fluid by creating vesicles around the fluid. | show 🗑
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| This type of endocytosis occurs when vesicle formation is triggered by solute binding to receptors on the plasma membrane. | show 🗑
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| LDL receptors in human cells use receptor-mediated endocytosis to take in _________. | show 🗑
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| Missing or defective LDL receptors in humans can result in high LDL numbers and those individuals have familial ________. | show 🗑
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