Cellular Level of Organization

Question 1

What are the subdivided 3 parts of the cell?

Answer 1

1. Plasma (cell) membrane, or plasmalemma
2. Cytoplasm
   - Cytosol
   - Organelles
3. Nucleus
   - Chromosomes
   - Genes

Question 2

What is a flexible yet sturdy barrier that surrounds and contains the cytoplasm of the cell?

Answer 2

Plasma Membrane

Question 3

What are the two types of membrane proteins?

Answer 3

Integral and Peripheral

Question 4

What are fluid structures because most of the membrane lipids and many of the membrane proteins move easily in the bilayer?

Answer 4

Membranes

Question 5

What serves to stabilize the membrane and reduce membrane fliuidity?

Answer 5

Cholesterol

Question 6

The lipid bilayer is always permeable to 1. (big or small), 2. (polar or nonpolar) 3. (charged or uncharged) molecules?

Answer 6

1. small
2. non polar
3. uncharged

Question 7

What act as channels or transporters increase the permeability of the membrane?

Answer 7

Transmembrane proteins

Question 8

What is only ale to pass through the plasma membrane by vesicular transport?

Answer 8

Macromolecules

Question 9

What is the difference in the concentration of a chemical between one side of the plasma membrane and the other?

Answer 9

Concentration gradient

Question 10

What is the difference in concentration of ions between one side of the plasma membrane and the other?

Answer 10

Electrical gradient

Question 11

What are examples of passive transport process?

Answer 11

Simple diffusion
Facilitated diffusion
Osmosis

Question 12

What are examples of active transport process?

Answer 12

Primary and secondary transport
Vesicular transport

Question 13

What helps solutes that are too polar or too highly charged move through the lipid bilayer?

Answer 13

Transmembrane proteins

Question 14

What are processes involved in facilitated diffusion?

Answer 14

Channel mediated facilitated diffusion
Carrier mediated facilitated diffusion

Question 15

What is the net movement of a solvent through a selectively permeable membrane from an area of high concentration to an area of low concentration?

Answer 15

Osmosis

Question 16

What is a solution relates to how the solution influences the shape of the body cells?

Answer 16

Tonicity

Question 17

What is membrane enclosed secretory vesicles fuse with the plasma membrane and release their contents into the extracellular fluid?

Answer 17

Exocytosis

Question 18

What is a combination of endocytosis and exocytosis used to move substances from one side of a cell, across it and out the other side?

Answer 18

Transcytosis