Exam 1 Slide Show (Cells) Pt 1

Question 1

Continuity of life has a _____ basis

Answer 1

Cellular

Question 2

What builds tissue and organs?

Answer 2

Cells

Question 3

Cells generally have

Answer 3

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

Question 4

What one cell type best represents the theoretical cell?

Answer 4

Liver hepatocytes

Question 5

There are over ____ different types of cells

Answer 5

200

Question 6

What is the plasmalemma?

Answer 6

Plasma membrane

Question 7

A plasma membrane can be observed with?

Answer 7

Electron microscope ( too thin for a light microscope)

Question 8

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

Answer 8

Plasma membrane

Question 9

What is the structural model of the plasma membrane?

Answer 9

The fluid mosaic model

Question 10

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

Answer 10

A fluid membrane (plasma membrane)

Question 11

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

Answer 11

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

Question 12

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

Answer 12

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

Question 13

The bilayer occurs because lipids are_____

Answer 13

amphipathic (having polar and non-polar )

Question 14

Inside the lipid bilayer, what mediates membrane fluidity?

Answer 14

Cholesterol

Question 15

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

Answer 15

Cholesterol

Question 16

Membrane proteins are classified as either ______ or ______

Answer 16

Integral or peripheral

Question 17

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

Answer 17

proteins

Question 18

Which proteins extend through or well into the bilayer?

Answer 18

Integral proteins (amphipathic like lipids)

Question 19

What forms ion channels and transporters?

Answer 19

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

Question 20

Which proteins are on one side of the membrane?

Answer 20

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