Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
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-ks cell part

biology-keystone u1

cell membrane (plasma membrane) -boundary between intracellular and extracellular environments -regulates entry/exit of substances -flexible and allows the cell to vary its shape if necessary -helps maintain a chemical balance within the cell
cell wall -rigid structure providing support for cell -thicker than the cell membrane -inflexible -protects the cell and gives the cell its shape
cytoplasm -jelly-like substance filling intracellular space -contains dissolved substances
cyto-skeleton -network of fine tubes and threads -provides internal structural support
centrioles -paired rods -help organize microtubules during mitosis
nucleus membrane-bound structure containing cells' genetic information and support molecules
nucleolus -small structure within nucleus -site of production of ribosomal RNA
nuclear membrane -boundary between nucleus and cytoplasm -regulates passage of materials between the two
flagella, pili, cilia -structures used to enable movement of cells or sometimes to propel substances across outer surface of cell -predominantly protein in composition
mitochondria -membrane bound organelle -folded membranes contain enzymes for aerobic respiration -little DNA
chloroplasts -membrane bound organelle -folded membranes contain chlorophyll and enzymes for photosynthesis -little DNA
vacuole -membrane bound area filled with water and assorted solutes -role in maintenance of water balance of the cell
ribosomes -small organelles at which protein synthesis occurs -may be free floating or membrane bound
smooth ER -network of flattened membranes forming tunnels -enzymes assisting synthesis of some lipids -final processing of proteins
rough ER -ribosomes embedded in membrane -proteins to be exported from cell produced here
Golgi body -stacks of saucer shaped membranes where export proteins are modified and stored prior to entering secretory vesicles for exocytosis
lysosomes -membrane bound structure -contains enzymes, which break down toxic or unwanted molecules
plastids membrane bound structures with varied functions -leucoplasts=starch storage -chromo lasts=colored pigments within
vesicles -packages for storage -temporary transport associated with endocytosis/exocytosis
Created by: amandathornton