Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.

Remove ads
Don't know
Know
remaining cards
Save
0:01
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:
Retries:
restart all cards




share
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

Chapt 3

A&P

TermDefinition
plasma membrane -forms the cell's flexible outer surface -separating the cell's internal environment (everything inside the cell) from the external environment (everything outside the cell)
what does the plasma membrane do -regulates the flow of materials into and out of a cell to help establish and maintain the appropriate environment for normal cellular activities - plays a key role in communication among cells and between cells and their external environment
cytoplasm - consists of all the cellular contents between the plasma membrane and the nucleus
The cytoplasm consists of cytosol and organelles
Cytosol the fluid portion of cytoplasm, contains water, dissolved solutes, and suspended particles
cytosol is also called intracellular fluid
Within the cytosol are several different types of organelles
nucleus is a large organelle that houses most of a cell's DNA
chromosome a single molecule of DNA associated with several proteins
genes hereditary units that control most aspects of cellular structure and function.
nucleus contains what chromatin, nuclear envelope, and nucleolus
The basic structural framework of the plasma membrane is the lipid bilayer
lipid bilayer two back-to-back layers made up of three types of lipid molecules—primarily phospholipids with smaller amounts of cholesterol and glycolipids
three types of lipid molecules within the lipid bilayer primarily phospholipids with smaller amounts of cholesterol and glycolipids
The bilayer arrangement occurs because the lipids have both polar and nonpolar parts
phospholipid a lipid that contains phosphorus
The “head” of each phospholipid is polar and hydrophilic
hydrophilic -hydro- = water -philic = loving
the “tails” of the phospholipid are The two fatty acid nonpolar and hydrophobic (-phobic = fearing)
hydrophobic -hydro- = water -phobic = fearing
Cholesterol molecules are -found in both layers of the plasma membrane - are steroids with an attached ─OH (hydroxyl) group
Glycolipids are -lipids with attached carbohydrate groups that form a polar “head” -their fatty acid “tails” are nonpolar.
Created by: jshockley