Exam 1 Slide Show (Cells) Pt 1 Flashcards Preview

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Flashcards in Exam 1 Slide Show (Cells) Pt 1 Deck (20):
1

Continuity of life has a _____ basis

Cellular

2

What builds tissue and organs?

Cells

3

Cells generally have

Plasma membrane, nucleus, cytoplasm (cytosol, organelles, inclusions)

4

What one cell type best represents the theoretical cell?

Liver hepatocytes

5

There are over ____ different types of cells

200

6

What is the plasmalemma?

Plasma membrane

7

A plasma membrane can be observed with?

Electron microscope ( too thin for a light microscope)

8

What describes a phospholipid bilayer with associated integral and peripheral proteins?

Plasma membrane

9

What is the structural model of the plasma membrane?

The fluid mosaic model

10

What type of membrane provides the cell with cell movement, growth, division, and self-sealing if torn or puncture?

A fluid membrane (plasma membrane)

11

How do membrane lipids affect the movement of materials across the membrane?

By allowing passage of many lipid-soluble substances but providing a barrier to charged or polar substances

12

I order from greatest to least, what does the lipid bilayer membrane consist of?

Phospholipids (75%), Cholesterol (20%), and Glycolipids (5%)

13

The bilayer occurs because lipids are_____

amphipathic (having polar and non-polar )

14

Inside the lipid bilayer, what mediates membrane fluidity?

Cholesterol

15

What makes the lipid bilayer less fluid (stronger) at normal body temperatures and increases membrane fluidity at lower temperatures?

Cholesterol

16

Membrane proteins are classified as either ______ or ______

Integral or peripheral

17

What are determiners of many of the membranes functions and give distinguishable characteristics?

proteins

18

Which proteins extend through or well into the bilayer?

Integral proteins (amphipathic like lipids)

19

What forms ion channels and transporters?

Integral proteins with channel proteins (form ion channels) and carriers (transporters)

20

Which proteins are on one side of the membrane?

Peripheral proteins (attach to phospholipid heads or integral proteins and do not go through the membrane)