Cell Membrane, Diffusion, Osmosis, and Active Transport

Diffusion is the net movement of molecule from a region of ...1...to region of ...2....

• 1: lower concentration, 2: higher concentration

• 1: higher concentration, 2: lower concentration

• 1: lower concentration, 2: lower concentration

• 1: higher concentration, 2: higher concentration

Two Erlenmeyer flasks are arranged as the diagram below. After several minutes, all of Erlenmeyer flasks are filled up by glucose solution. Why did it happen?

• It happens because of diffusion

• It happens because of osmosis

• It happens because of gravitation force

• It happens because of shaking hands

Osmosis is the passage of ...1... molecules from a region of their higher concentration to a region of their lower concentration through a ... 2 ... permeable membrane

• 1: sugar, 2: completely

• 1: sugar, 2: partially

• 1: water, 2: completely

• 1: water, 2: partially

The diagram shows two chambers with different concentration of molecules separated by a selectively permeable membrane. Predict what will happen to the water molecules ?

• move from B to A due to diffusion

• move from B to A due to osmosis

• move from B to A due to active transport

• move from A to B due to osmosis

Active transport is movement of particles through the cell membrane from a region of ...1... to a region of ...2... using energy in the form of ...3...

• 1: lower concentration, 2: higher concentration, 3: NADPH

• 1: higher concentration, 2: lower concentration, 3: NADPH

• 1: higher concentration, 2: lower concentration, 3: ATP

• 1: lower concentration, 2: higher concentration, 3: ATP

Which of the following is a sample of active transport?

• movement of oxygen from alveoli into red blood cell

• movement of water across cell membrane

• plant root absorbing mineral ions from the soil

• uptake of water by the root hair of the plant

Which of the following is a sample of osmosis?

• plant root absorbing mineral ions from the soil

• the scent from a bunch of flowers spreads throughout a room

• carbon dioxide move from air into leaves through stomata.

• plant root absorbing water from the soil

Tags

NGSS.MS-LS2-1

The diagram shows an experiment using a potato. Which shows the result of the experiment after 24 hours?

• 
• 
• 
• 

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which one is the definition of Diffusion ?

• movement of particles through the cell membrane from a region of lower concentration to a region of higher concentration using energy in the form of ATP.

• passage of water molecules from a region of their higher concentration to a region of their lower concentration through a partially permeable membrane

• net movement of molecule from a region of higher concentration to region of lower concentration. Molecule down a concentration gradient

• net movement of molecule from a region of lower concentration to region of higher concentration. Molecule down a concentration gradient

Tags

NGSS.MS-LS2-3

Which one is the definition of Osmosis ?

• movement of particles through the cell membrane from a region of lower concentration to a region of higher concentration using energy in the form of ATP.

• passage of water molecules from a region of their higher concentration to a region of their lower concentration through a partially permeable membrane

• net movement of molecule from a region of higher concentration to region of lower concentration. Molecule down a concentration gradient

• net movement of molecule from a region of lower concentration to region of higher concentration. Molecule down a concentration gradient