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

Parrot Chapter 7 :)

Chapter 7 Vocab

QuestionAnswer
Cell Basic units of life.
Cell Theory A fundamental concept of biology: -All living things are made up of cells. - Cell are the basic units of structure and function in living things. -New cells are produced from existing cells.
Cell membrane A thin flexible barrier. Surrounds all cells.
Nucleus A large membrane-enclosed structure that contains genetic material in the form of DNA and controls many of the cell's activities.
Eukaryotes DNA enclosed in nuclei.
Prokaryotes DNA not enclosed in nuclei.
Cytoplasm A portion of the cell outside the nucleus.
Organelles Specialized parts or "organs" in the cells
Vacuoles Large, saclike, membrane-enclosed structures. Store materials like water, salts, proteins, and carbohydrates.
Lysosomes Small organelles filled with enzymes. Break down lipids, carbohydrates, and proteins into small molecules that can be used by the rest of the cell. They are also involved in breaking down organelles that have outlived their usefulness.
Cytoskeleton Helps eukaryotic cells hold their shape and internal organization. Network of protein filaments.
Centrioles Help organized cell division. Not in plant cells.
Ribosomes Small particles of RNA and protein found throughout the cytoplasm in all cells. Assemble proteins.
Endoplasmic Reticulum Eukaryotes only. Internal membrane system. Proteins made on the rough ER include those that will be released, or excreted, from the cell as well as many membrane proteins and proteins destined for lysosomes and other specialized locations within cell.
Golgi apparatus Stack of flattened membranes. Modifies, sorts and packages proteins and other materials from the endoplasmic reticulum for storage in the cell or release outside the cell.
Chloroplasts Capture energy from sunlight and convert it into food that contains chemical energy in a process call photosynthesis. Like biological solar panels.
Mitochondria. Convert the chemical energy stored in food into compounds that are more convenient for the cell to use. Like power plants of cell.
Cell wall Many cells, including prokaryotes, also produce a strong supporting layer around the membrane.
Lipid bilayer Flexible, strong barrier between the cell and surroundings. Regulates what enters and leaves the cell. Also protects and supports the cell.
Selectively Permeable Some substances can pass across and some can't pass across.
Diffusion Process by which particles move from an area of high concentration to an area of lower concentration.
Facilitated Diffusion Process in which molecules that cannot directly diffuse across membrane pass through special protein channels.
Aquaporins Water channel proteins. Allow movement of water through cell membrane
Osmosis Diffusion water through a selectively permeable membrane.
Isotonic When two solutions have same concentrations of solute.
Hypotonic When one side has a lower concentration (a more dilute) solute.
Hypertonic When one side has a higher concentration (a less dilute) solute.
Osmotic Pressure Force from net movement of water out of or into a cell.
Homeostasis Relatively constant internal physical and chemical conditions. To maintain it, unicellular organisms grow, respond to the environment, transform energy, and reproduce.
Tissue A group of similar cells that performs a particular function.
Organ Group of tissues.
Organ System Group of organs that work together to perform a specific function.
Receptor Receives chemical signals. Allows cells to respond to signal. Can be on membrane or in cytoplasm.
Created by: mnbioteach
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