Presentation
Collin College BIOL 1408 Chapter 5 Prelecture Assignment with Answer Key
- Course
- BIOL 1408
- Institution
- Collin College
Collin College BIOL 1408 Chapter 5 Prelecture Assignment with Answer Key
[Show more]
Seller
Follow
Content preview
Biol 1408 Chapter 5 Pre-lecture Assignment1. The main components of the cell membrane are lipids, proteins and glycerol. (They also have
glycolipids/glycoproteins. We will learn that in class )
2. The structure of the cell membrane is described as a fluid mosaic model. Here the fluid portion
is the plasma and the mosaic refers to the combination.
3. The ability of the membrane to allow some substances to pass through but not others is
termed electrochemical gradient.
4. Diffusion is the movement of solid material from an area of high concentration of the material
to an area of lower concentration.
5. Polar /Nonpolar (circle one) molecules like oxygen and carbon dioxide are able to diffuse
directly through the phospholipid bilayer. This type of diffusion is called facilitated diffusion.
6. Polar/Nonpolar (circle one) molecules like ions diffuse through protein channels. This type of
diffusion is called facilitated_.
7. The transport of water across the membrane is called osmosis. This process moves solvents
(like water) from an area of higher_ concentration of solutes (dissolved material) to lower_
concentration of solutes. Water is transported across the membrane through special channel
proteins called aquaporins.
8. When comparing the concentration of solutes of two areas, like inside and outside the cell,
hypertonic refers to the area with the higher/lower/same (circle one) concentration of
solutes. Hypotonic refers to the area with the higher/lower/same (circle one) concentration of
solutes. Isotonic refers to the area with the higher/lower/same (circle one) concentration of
solutes.
9. In a hypertonic solution, water moves into/out (circle one) of cells. In a hypotonic solution,
water moves into/out (circle one) of cells.
10. Active transport is the movement of substances from an area of high/low (circle one)
concentration to an area of high/low (circle one) concentration. This process does/does not
(circle one) need energy.
11. The process by which large molecules come into the cell is called endocytosis; while large
molecules get out of the cell through the process termed exotytosis.
12. The 3 types of endocytosis are phagocytosis_, pinocytosis and receptor-mediated endocytosis.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller danielhawkins1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $5.04. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now