Unit B Section 2.0

What does semi-permeable mean?

• All materials are allowed into and out of the cell membrane

• Only water is allowed in and out of the cell membrane

• Only certain materials (based on size) are allowed in and out of the cell membrane

• Only waste materials are allowed out of the cell membrane

What is the difference between diffusion and osmosis?

• Diffusion is the movement of water from an area of low to high concentration whereas osmosis is the movement of materials such as gases

• Diffusion is the movement of water from an area of high to low concentration whereas osmosis is the movement of materials such as gases

• Diffusion is the movement of materials such as gases from an area of low to high concentration whereas osmosis is the movement of water

• Diffusion is the movement of materials such as gases from an area of high to low concentration whereas osmosis is the movement of water

Which of the following statements is NOT true about osmosis?

• It happens without extra energy required

• It is the movement of particles like gases and wastes

• It happens from an area of high to low concentration

• It happens until equilibrium occurs

What is equilibrium?

• The concentration of the solute and solvent are equal

• The concentration of solute is equal on both sides of the cell membrane

If the concentration of salt is greater on the outside of the cell, which way will water move?

• Out of the cell

• Into the cell

Which of the following are unicellular organisms? (check all that apply).

• bacteria

• amoeba

• dog

• mycoplasm

Which cells are responsible for carrying oxygen to all the other cells in the body?

• white blood cells

• stem cells

• liver cells

• red blood cells

Which type of tissue makes up the brain and spinal cord?

• connective tissues

• nervous tissue

• epithelial tissue

• muscle tissue

Blood, fat, cartilage, bones are tendons are all examples of this type of tissue.

• connective tissue

• nervous tissue

• epithelial tissue

• muscle tissue

What are the three types of plant tissue?

• leaves, stems, and roots

• protective, photosynthetic and transport

• leaves, protective and transport

• roots, stems and photosynthetic