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Cell Membrane Test
| Question | Answer |
|---|---|
| During diffusion molecules tend to move ___________ | with or down the concentration |
| When the concentration of a solute is the same throughout a system, the system has reached ____________ | equillibrium |
| Glucose enters a cell from high concentration to low concentration using a protein _____________ | ion channels |
| Energy for active transport in the cell membrane is ________ | ATP |
| Diffusion, facilitated diffusion, osmosis are all kinds of ______ transport | passive transport |
| Cell membranes do not allow all substances to pass through easily | true |
| cell membranes surround all animal, plant, and bacterial cells | true |
| Cell membranes are mostly composed of | phospholipids and proteins |
| _______ transport requires energy from ATP to move substances across membranes | Active |
| Placing an animal cell in a saltwater solution will cause the water to ________ | move out of the cell |
| Gases like oxygen and carbon dioxide move across the cell membrane using ______ | diffusion |
| when it's cold outside and you put on a jacket, this is an example of ______ | homeostasis |
| Johnny is a student in Aquatic Science, and he was given the responsibility of taking care of gobies (saltwater fish), however Johnny only has a freshwater tank at home. Why can't Johnny take home the guppies? | the gobies will accumulate too much water in their bodies and will eventually die |
| Energy | is used during active transport but not passive transport |
| Facilitated Diffusion | a form of passive transport that uses transport proteins |
| Equilibrium | when the molecules of one substances are spread evenly throughout another substance to become balanced |
| Osmosis | the diffusion of water through a cell membrane |
| Active Transport | particle movement from an area of lower concentration to an area of higher concentration |
| Channel Protein | transport protein that provides an opening or doorway in the plasma membrane through which particles can diffuse |
| Passive Transport | the movement of substances through the cell membrane without the use of cellular energy |
| Diffusion | particle movement from an area of higher concentration to an area of lower concentration |
| The cell membrane is the organelle that is involved with helping homeostasis. | True |
| Semi permeable membrane and plasma membrane are other names for cell membrane | True |
| Gases, water, sugar, water, and salts can pass directly through the membrane | False |
| Solute is the substances that does the dissolving | False |
| If concentration of solute is greater outside the cell; water will enter the cell and cause the cell to swell | False |
| If concentration of solute is equal both outside and inside the cell, the cell is at equilibrium | True |
| If concentration of solute is greater inside the cell; water will enter the cell cause the cell to swell | True |
| what must cells take in to survive? | take in water and nutrients |
| what part of the cell allows it to take in nutrients and water? | cell membrane |
| what is the composition of the cell membrane? | proteins, lipids, and carbs |
| what are the proteins in the cell membrane? | receptor proteins, channel proteins, and marker proteins |
| how do your cells eat, drink, and be merry? | with cell membrane |
| two types of transport | passive and active transport |
| what is diffusion or passive transport? | 1. requires no energy from cell 2. move from high concentration to low 2. move with the concentration gradient |
| the purpose of diffusion is to reach | homeostasis (isotonic) |
| What is osmosis? | the passive diffusion of water |
| What part of the cell regulates what goes in and out? | cell membrane |
| what are two components of the cell membrane? | proteins and lipids |
| what are the characteristics of passive transport? | goes with concentration and doesn't use energy |
| what is diffusion | passive transport without using channel proteins |
| Why does diffusion occur? | cells are trying to create homeostasis |
| What is osmosis? | passive diffusion of water |
| why does osmosis occur? | two solutions are separated by a particularly permeable membrane |
| What is facilitate diffusion? | diffusion assisted with channel proteins |
| what is the role of the channel protein in facilitated diffusion? | transport cells across the membrane |
| what happens to an animal cell when there are more dissolved substances on the outside of the cell? | the animal cells in a hypertonic solution shrivel because of the decreased pressure in the cell |
| What happens to an animal cell when there are more dissolved substances on the inside of the cell? | could overgrow and possibly pop |
| what happens to an animal cell when there are equal amounts of dissolved substances? | maintain homeostasis |
| What is active transport? | 1. active energy requires energy 2. molecules move from low concentration to high 3. molecules move across the concentration gradient |
| what is endocytosis? | the taking in the matter by living cells by ingestion to a vacuole |
| what is pinocytosis? | the ingestion of liquid into a cell by the budding of small vesicles from the cell membrane |
| what is phagocytosis? | the ingestion of bacteria or other material by pragocytes and ...... |
| what single cell protist does phaygocytosis | cell eating |
| what single cells in your body also do this? | cell slipping |
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