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 Chapter 7

TermDefinition
cell basic unit of life
cell theory idea that all living things are composed of cells, cells are the basic units of structure and function in living things and new cells are produced from existing cells.
nucleus a large membrane-enclosed structure that contains the cell's genetic material in the form of DNA.
Eukaryotes cells that contain nuclei
Prokaryotes cells that do not contain nuclei
organelle little organs in the cell.
cytoplasm the portion on the cell outside the nucleus.
nuclear envolope what surrounds the nucleus, composed of two membranes
chromatin granular material in the nucleus.
chromosomes when chromatin condenses for division.
nucleolus where the assembly of the ribosomes begin.
ribosomes small particles of RNA and protein found throughout the cytoplasm.
endoplasmic reticulum the site where lipid components of the cell membrane are assembled, with proteins and other materials that are exported from the cell.
Golgi apparatus modifies, sorts, and packages proteins and other materials from the ER for storage in the cell or secretion outside the cell.
Lysosomes small organelles filled with enzymes.
vacuoles saclike structures that store materials like water, salts, proteins, and carbs.
mitchondria organelles that convert the chemical energy stored in food into compounds that are more convenient for the cell to use.
chloroplasts organelles that capture the energy from sunlight and convert it into chemical energy in a process called photosynthesis.
cytoskeleton a network of protein filaments that helps the cell to maintain its shape.
centrioles located near the nucleus and help to organize cell division.
cell membrane a thin flexible barrier on the inside of the cell wall.
cell wall a strong, supporting, outer layer on some cells.
lipid bilayer a double-layered sheet that regulates what enters and leaves the cell
concentration the mass of solute in a given volume of solution, or mass/volume.
diffusion when particles move from an area of higher concentration to an area with lower concentration.
equilibrium when the concentration of the solute is the same throughout a system.
osmosis the diffusion of water through a selectively permeable membrane.
isotonic the concentrations of sugar and water are equal on both sides of the membrane.
hypertonic the more concentrated sugar solution. ("above strength")
hypotonic the less concentrated sugar solution. ("below strength")
facilitated diffusion the movement of specific molecules across cell membranes through protein channels
active transport the transportation of small molecules or ions across a cell membrane that requires energy
endocytosis the process of taking material into the cell by means of infoldings, or pockets of the cell membrane.
phagochtosis process in which extensions of a cytoplasm surround and engulf large particles and take them into the cell.
pinocytosis process by which tiny pockets form along the cell membrane, fill with liquid, and pinch off to form vacuoles within the cell.
exocytosis process by which the membrane of the vacuole surrounding the material fuses with the cell membrane forcing the contents out of the cell.
cell specialization when cells throughout an organism develop in different ways to preform different tasks
tissue a group of similar cells that perform a particular function.
organ a group of tissues working together.
organ system a group of organs that work together.
Created by: meg_strayer
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