cellular+respiration

(1)p. 31 Describe the structure of a phospholipid (insert an image). Indicate the parts that hydrophillic and the parts that are hydrophobic.

Phospholipids have a phosphate group, Essentially they are constructed like fats except in place of the 3rd fatty acid there is a phosphate group

(2) p. 31 How do phospholipids arrange themselves in water?

With tails facing each other and polar heads out

(3) p. 46 Describe the fluid-mosaic model of a membrane. (insert an image) Which components are the fluid, and why? Which components are the mosaic, and why?

Protein molecules form a shifting pattern within the fluid phospholipids bilayer

(4) p. 46 What is the function of the membrane? How does the structure of the membrane suit that structure?

To allow things in and out of the cell, The structure uses selective permeability.

(5) p. 46 Why is the membrane considered selectively permeable?

Only small molecules that are lipid soluble can pass through it

(6) p. 46 What is diffusion? Give an example.

When a substance can diffuse across a plasma membrane, it will move back and forth across the membrane (7) p. 46 What is osmosis?

Is the diffusion of water across the plasma membrane

(8) p.46 How do isotonic, hyptonic, and hypertonic solutions differ and how does each affect cells? (insert an image)

isotonic, same solute as in cell hypotonic, lower solute hypertonic, higher

(9) pp. 46-47 What is the difference between passive and active transport?

Active, a molecule is moving contrary to the normal direction Passive,

(10) pp. 46-47 What are the various ways substances can enter and exit cells? (diffusion, facilitated transport, active transport, endocytosis, exocytosis) Which are passive and which are active ways of crossing the cell?

Can’t find (11) p. 47 What is the difference between exocytosis and phagocytosis?

Exo=out Phag=some white blood cells are able to take up disease causing agents called pathogens by endocytosis (12) p. 54 What is the overall formula of cellular respiration? What are the reactants and what are the products?

(13) pp. 54-55 Which molecule captures the energy released from glucose? How many molecules are produced per glucose? (14) p. 55 What is the role of oxygen in cellular respiration? (15) p. 55 Where does carbon dioxide come from in cellular respiration? (16) p. 56 What is fermentation? How many ATP are produced per glucose molecule? (17) p.56 What is the waste product of yeast fermentation?