Question

1. how are phospholipids arranged in the cell membrane?
2. define each of the following:

osmosis -
diffusion-

1. what type of molecules can easily pass through a cell membrane?
2. what is a solvent? what is a solute?
3. in osmosis, which way will water move?
4. what is the first phase of photosynthesis?

where does it occur?
what are the reactants?
what are the products?

1. what is the second phase of photosynthesis?

where does it occur?
what are the reactants?
what are the products?

1. what is the electron carrier in photosynthesis?
2. in cellular respiration; what are the three stages and how much atp is produced in each?

Explanation:

Answer:

Phospholipids are arranged in a bilayer in the cell membrane.
Osmosis - the diffusion of water across a selectively permeable membrane.
Diffusion - the movement of molecules from an area of higher concentration to an area of lower concentration.
Small non - polar molecules (e.g., oxygen, carbon dioxide) can easily pass through a cell membrane.
A solvent is the substance in which a solute is dissolved (e.g., water). A solute is the substance that is dissolved (e.g., salt).
In osmosis, water moves from an area of lower solute concentration to an area of higher solute concentration.
The first phase of photosynthesis is the light - dependent reactions. It occurs in the thylakoid membranes. Reactants: light, water. Products: ATP, NADPH, oxygen.
The second phase of photosynthesis is the Calvin cycle (light - independent reactions). It occurs in the stroma. Reactants: ATP, NADPH, carbon dioxide. Products: glucose.
The electron carrier in photosynthesis is NADP⁺ (which is reduced to NADPH).
The three stages of cellular respiration: glycolysis (produces 2 ATP), the citric acid cycle (produces 2 ATP per glucose), and oxidative phosphorylation (produces about 28 - 32 ATP).