Save
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

Final Review

QuestionAnswer
Cell Theory 1. All living things are composed of cells. 2. Cells are the basic units of structure and function in living things 3. New cells are produced from existing cells.
Cell membrane a thin, flexible barrier around the cell
Cell wall strong layer around the cell membrane
Nucleus contains the genetic material, controls the cell's activities
Cytoplasm material inside the cell membrane
Prokaryote lack nuclei and organelles. They have one circular chromosome and are less than 5 micrometers
Eukaryote contains nuclei and organelles, have many linear chromosomes, and are 20-100 micrometers
Organelle Specialized structure in a cell
Cell Walls found in plants and some bacteria. In protects the cell and gives it support. It's made of fibers of carbohydrates and proteins. Plant cell walls are made of cellulose.
Nucleus controls most cell processes and contains DNA
Nucleolus A small, dense region in the nucleus where the assembly of ribosomes begins.
Cytoskeleton Protein filaments that helps the cell matain its shape and it's involved in cell movement.
Microtubules hollow tubes of proteins 25 nanometers in diameter. They mantain cell shape, serve as "tracks" for organelles, and form centrioles.
Microfilaments long, thin fibers 7 nanometers in diameter. Give support, move organelles in the cell.
Rough ER Involved in the synthesis of proteins and has ribosomes.
Smooth ER Contains enzymes that perform specialized tasks.
Lysosomes Break down old organelles, have enzymes that break down lipids, carbos, and proteins. They remove debris and are suicide sacks.
Ribosome RNA, produces protein.
ER Constructs components of scell membrane and some proteins
Golgi apparatus stack of membranes, enzymes attach carbos to lipids and proteins
Vacuole Saclike structure, stores materials
Chloroplast uses nrg from sunlight to make food
Mitochondrion Uses nrg from food to make ATP
Animal cells have ____ which plant cells don't. Lysosomes
Plant cells have _____ and _____ which animal cells don't. Cell wall, chloroplasts.
Functions of the cell membrane Regulates what enters and leaves the cell, protection and support
The core of nearly all cell membranes lipid bilayer
Diffusion A process in which molecules move from high concentration to low concentration
Selectively permeable allows only some substances to pass through
Osmosis the diffusion of water through a selectively permeable membrane.
Water stops moving acroos a membrane... once equilibrium is reached.
Isotonic same stregnth in solute
Hypertonic above stregnth in solute
Hypotonic below stregnth in solute
Osmosic exerts pressure on the____ side. hypertonic
Facilitated diffusion a protein channel allows molecules that can't fit through the lipid bilayer to get in, like ions, sugars, and salts.
Active transport moving molecules against a concentration difference.
Endocytosis taking material into the cell by infoldings of the cell membrane
Phagocytosis large molecules are taken in by endocytosis
Exocytosis removal of material from the cell when the vesicle fuses with the cell membrane.
Cell specialization when a cell is specialized to perform a particular function within the organism.
Four levels of organization Cells, tissues, organs, organ systems
Tissue group of similar cells
Four main types of tissue muscle, epithelial, nervous, connective.
Organ a group of tissues
Organ System a group of organs.
Created by: numchuckskillz
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