Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Biology Vocab. 3

Terms for Chapter 3

TermDefinition
Cell Theory Theory that states that all organisms are made of cells, all cells produced by other livings cells, and the cell is the most basic unit of life.
Cytoplasm Jellylike substance inside cells that contains molecules and in some cells organelles
Organelle Membrane-bound structure that is specialized to perform a distinct process within a cell.
Prokaryotic Cell Cell that does not have a nucleus or other membrane-bound organelles.
Eukaryotic Cell Cell that has a nucleus and other membrane bound organelles.
Cytoskeleton Network of proteins, such as microtubules and microfilaments, inside a eukaryotic cell that supports and shapes the cell.
Nucleus Organelle composed of double membrane that acts as the storehouse for most of a cell's DNA.
Endoplasmic Reticulum Interconnected network of thin, folded membranes that produce, process, and distribute proteins.
Ribosome Organelle that links amino acids together to form proteins..
Golgi Apparatus Stack of flat, membrane-enclosed spaces containing enzymes that process, sort, and deliver proteins.
Vesicle Small organelle that contains and transports materials within the cytoplasm.
Mitochondrion Bean-shaped organelle that supplies energy to the cell and has its own ribosomes and DNA.
Vacuole Organelle that is used to store materials, such as water, food, or enzymes, that are needed by the cells.
Lysosome Organelle that contains enzymes.
Centriole Small cylinder-shaped organelle made of protein tubes arranged in a circle; aids mitosis.
Cell Wall Rigid structure that gives protection, support, and shape to cells in plants, algae, fungi, and bacteria.
Chloroplast Organelle composed of numerous membranes that are used to convert solar energy into chemical energy; contains chlorophyll
Cell membrane Double-layer of phospholipids that forms a boundary between a cell and the surrounding environment and controls the passage of materials into and out of a cell.
Phospholipid Molecule that forms a double-layered cell membrane; consists of glycerol, a phosphate group, and two fatty acids.
Fluid Mosaic Model Model that describes the arrangement and movement of the molecules that make up a cell membrane.
Selective Permeability Condition or quality of allowing some, but not all, materials to cross a barrier or membrane.
Receptor Protein that detects a signal molecule and performs and action in response.
Passive Transport Movement of molecules across the cell membrane without energy input from the cell.
Diffusion Movement of dissolved molecules in a fluid or gas from a region of higher concentration to a region of lower concentration.
Concentration Gradient Difference in the concentration of a substance from one location to another.
Osmosis Diffusion of water molecules across a semipermeable membrane from an area of higher water concentration to an area of lower water concentration.
Isotonic Solution that has an equal concentration of dissolved particles compared with another solution.
Hypertonic Solution that has higher concentration of dissolved particles compared with another solutions.
Hypotonic Solution that has a lower concentration of dissolved particles compared with another solution.
Facilitated Diffusion Diffusion of molecules assisted by protein channels that pierce a cell membrane.
Active Transport Energy-requiring movement of molecules across a membrane from a region of lower concentration to a region of higher concentration
Endocytosis Uptake of liquids or large molecules into a cell by inward folding of cell membrane.
Phagocytosis Uptake of a solid particle into a cell y engulfing the particle; see endocytosis.
Exocytosis Release if substance out of a cell by the fusion of a vesicle with the membrane.
Created by: rosiana21
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards