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 Chpt 7

Cell Structure and Function

QuestionAnswer
Cell Collection of living matter enclosed by a barrier that separates the cell from its surroundings; basic unit of all forms of life.
Cell Theory Idea that all living things are composed of cells, cells are the basic are the basic units of structure and function in living things, and new cells are produced from existing cells.
Nucleus The center of the atom which contains the protons and neutrons; in cells, structure that contains the cell's genetic material (DNA) and controls the cell's activities.
Eukaryote Organism whose contain cells nuclei.
Prokaryote Unicellular organism lacking a nucleus.
Organelle Specialized structure that performs important cellular functions within a eukaryotic cell.
Cytoplasm Material inside the cell membrane-not including the nucleus.
Nuclear Envelope Layer of two membranes that surrounds the nucleus of a cell.
Chromatin Granular material visible withing the nucleus; consists of DNA tightly coiled around proteins.
Chromosome Threadlike structure within the nucleus; containing the genetic information that is passed from one generation of cells to the next.
Nucleolus Small, dense region within most nuclei in which the assembly of proteins begins.
Ribosome Small particle in the cell on which proteins are assembled; made of RNA and protein.
Endoplasmic Reticulum Internal membrane system in cells in which lipid components of the cell membrane are assembled and some proteins are modified.
Golgi Apparatus Stack of membranes in the cell that modifies, sorts, and packages proteins from the endoplasmic reticulum.
Lysosome Cell organelle filled with enzymes needed to break down certain materials in the cell.
Vacuole Cell organelle that stores materials such as water, salts, proteins, and carbohydrates.
Mitochondrion Cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use.
Chloroplast Organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy.
Cytoskeleton Network of protein filaments within some cells that helps the cell maintain its shape and is involved in many forms of cell movement.
Centriole One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope.
Cell Membrane Thin, flexible barrier around the cell; regulates what enters and leaves the cell.
Cell Wall Strong supporting layer around the cell membrane in plants, algae, and some bacteria.
Lipid Bilayer Doubled-layered sheet that forms the core of nearly all cell membranes.
Concentration The mass solute in a given volume of solution, or mass/volume.
Diffusion Process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated.
Equilibrium When the concentration of a solute is the same throughout a solution.
Omosis Diffusion of water through a selectively permeable membrane.
Isotonic When the concentration of two solutions is the same.
Hypertonic When comparing two solutions, the solution with the greater concentration of solutes.
Hypotonic When comparing two solutions, the solution with the lesser concentration of solutes.
Facilitated Diffusion Movement of specific molecules across cell membranes through protein channels.
Active Transport Energy-requiring process that moves material across a cell membrane against a concentration difference.
Endocytosis Process by which a cell takes material into the cell by infolding of the cell membrane.
Phagocytosis Process in which extensions of cytoplasm surround and engulf large particles and take them into a cell.
Pinocytosis Process by which a cell takes in liquid from the surrounding environment.
Exocytosis Process by which a cell releases large amounts of material.
Cell Specialization The process in which cells develop in different ways to perform different tasks.
Tissue Group of similar cells that perform a particular function.
Organ Group of tissues that work together to perform closely related functions
Organ System Group of organs that work together to perform a specific function.
Created by: 10009114
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