Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
The cell membrane
Haley Freshman Biology - Myrick
| Question | Answer |
|---|---|
| Functions of the Cell Membrane (3) | 1) regulates what enters and leaves the cell 2) protection 3) support |
| The cell membrane is made of | a lipid bilayer |
| the cell membrane has what embedded within the membrane? | protein molecules (carbohydrate molecules are attached to many of the protein molecules) |
| Functions of the Cell Membrane (3) | 1) regulates what enters and leaves the cell 2) protection 3) support |
| The cell membrane is made of | a lipid bilayer |
| What is cytoplasm | the portion of the cell within the membrane that is not the nucleus |
| the cell membrane has what embedded within the membrane? | protein molecules (carbohydrate molecules are attached to many of the protein molecules) |
| the cell membrane has what embedded within the membrane? | protein molecules (carbohydrate molecules are attached to many of the protein molecules) |
| selectively permeable | some substances can pass through and some cannot |
| What characteristic does the cell membrane have ? | selectively permeable |
| selectively permeable | some substances can pass through and some cannot |
| What are the channels or pumps made of that move the materials from one side of the cell to the other? | protein channels |
| What characteristic does the cell membrane have ? | selectively permeable |
| Equilibrium | when the concentration of the solute inside the cell is the same as the concentration outside the cell. |
| What are the channels or pumps made of that move the materials from one side of the cell to the other? | protein channels |
| What is cytoplasm | the portion of the cell within the membrane that is not the nucleus |
| Diffusion | the process by which molecules move from an area of high concentration to an area of low concentration |
| What molecule is the cytoplasm mostly made of ? | water |
| Equilibrium | when the concentration of the solute inside the cell is the same as the concentration outside the cell. |
| When equilibrium is reached to the molecules stop moving? | No, the water will move back and forth |
| Diffusion | the process by which molecules move from an area of high concentration to an area of low concentration |
| Equilibrium | when the concentration of the solute inside the cell is the same as the concentration outside the cell. |
| concentration gradient | the process by which WATER moves from an area of high concentration to an area of low concentration |
| why does diffusion occur? | because molecules are constantly movie and colliding with eachother |
| What types of particle transport do not require energy? (3) | diffusion, osmosis, facilitated diffusion |
| When equilibrium is reached to the molecules stop moving? | No, the water will move back and forth |
| osmosis | the process by which WATER moves from an area of high concentration to an area of low concentration |
| Active Transport | Molecules move from an area of low concentration to an area of high concentration. |
| What types of particle transport do not require energy? (3) | diffusion, osmosis, facilitated diffusion |
| Does Active Transport require energy or not? Why? | Yes it requires energy because it is moving particles against the concentration gradient . |
| Active Transport | Molecules move from an area of low concentration to an area of high concentration. |
| Facilitated diffusion | when the cell membrane helps (facilitates) the diffusion of materials across the membrane |
| Where does facilitated diffusion occur in the cell membrane? | through protein channels |
| Endocytosis | the process of taking material into the cell by the means of infoldings or pockets, of the cell membrane |
| What molecules are taken into the cell during phagocytosis? | way of taking in food. extensions of cytoplasm surround a particle and package it within a food vacuole. |
| What molecules are taken into the cell during pinocytosis? | when the cells take up liquid from the surrounding environment. Tiny pockets form along the cell membrane, fill with liquid and pinch of to form vacuoles within the cell. |
| Exocytosis | when the membrane of the vacuole surrounding the material fuses with the cell membrane forcing the contents out of the cell |
| concentration of a solution | the MASS of a solute in a given volume of solution, or mass/volume |
| what is the concentration of a solution containing 100 g of NaCl and 10 ml of water? (how do you solve?) (remember UNITS) | percent composition by mass, volume percent, mole fraction, molarity, molality, or normality. |
| Isotonic | when the concentration of a (salt/sugar) solute is equal (same) on both sides |
| Hypertonic | when there is MORE solute (salt/sugar) molecules outside of the cell |
| Hypotonic | when there is LESS solute molecules outside the cell |
| know how to draw a picture of Isotonic, hypertonic and hypoton cells | http://epiehonorsbiology.wikispaces.com/file/view/hypotonic_solutions.jpg/275922262/545x434/hypotonic_solutions.jpg |
| What type of pressure caused the chloroplasts to move against the plant cell wall? | Turgor pressure |
| What will happen to an animal cell that is placed in a solution of fresh water and why does this happen? | The plant will wilt because the concentration of water in saltwater is lower than the concentration of water in the plant itself (because it is a freshwater plant). Water will diffuse out of each individual cell and the cell will crenellate (or shrivel up |
| In the lab using elodea leaf, where did the chloroplasts move when they were bathed in a hypertonic salt solution? | This picture shows plasmolyzed Elodea after the slide had been soaked with salt solution. Notice that the chloroplasts have all clumped into the middle. This demonstrates the effect on a hypertonic solution on living cells. |
| What will happen to an animal cell that is placed in a solution of salt water? Why does this happen? | if the solution is hypertonic (there are more solutes in the solution than in the cell) then the water in the cell will move out thus shrinking the cell in the process called plasmolysis to achieve equilibrium |
| What type of solution is distilled water? | xyxyxyxyyxyxy |
| In the lab using the elodea leaf, where did the chloroplasts move when they were bathed in distilled water? | This picture shows normal Elodea. The chloroplasts are spread throughout the cell both before the salt solution, and after the distilled water is put onto the slide. Distilled water represents a hypotonic solution, yet the cells do not burst because of th |
| What type of pressure caused the chloroplasts to move against the plant cell wall? | xoxoxoxoxo |
| What happens in the cells of a plant if it is not watered? | xoxoxoxoxoxooxox |
| What is cell specialization? | cells throughout an organism can develop in different ways to perform different tasks |
| List the four types of tissues in the body | muscle, epithelial, nervous, connective |
| What is the function of muscle tissue? | oxoxoxoo |
| What is the function of epithelial tissue? | xooxoxooxox |
| What is the function of nervous tissue? | |
| How does the structure of a red blood cell help it to do its job? | xoxoxoxoxox |
| What type of tissue makes up skin and lines your internal organs? | epithelial |
| What type of tissue allows you to run in a race? | muscle |
| What type of tissue provides support for the body? Examples of this type of tissue are tendons, bones, ligaments , and blood. | xoxoxo |
| What type of tissue makes up skin and lines your internal organs? | epithelial |
Created by:
murphy1717
Popular Biology sets