Lab 3: Physiochemical Properties of the Cell

Question 1

It is a type of transport mechanism that follows the concentration gradient; molecules flow from high to low.
Does not use metabolic energy.

Answer 1

Passive Transport

Question 2

What type of energy does passive transport use?

Answer 2

Kinetic Energy

Question 3

It is a type of passive transport mechanism where solutes are transported directly across the membrane.

Answer 3

Simple Diffusion

Question 4

It is a type of passive transport mechanism where solutes are transported through protein channels embedded in the membrane.

Answer 4

Facilitated Diffusion

Question 5

It is a type of transport mechanism where it transport against the concentration gradient; from low to high concentration.
Uses metabolic energy.

Answer 5

Active Transport

Question 6

What metabolic energy is used in Active Transport?

Answer 6

ATP, etc.

Question 7

It is the diffusion of water, where it moves water towards an area with high concentration of solute. It may utilize the phospholipid, and very often the aquaporins.

Answer 7

Osmosis

Question 8

It is the measure of how the concentration of solutes in the extracellular fluid affects the cells.

Answer 8

Tonicity

Question 9

It is a type of tonicity wherein equal concentration of solutes in the intracellular fluid and extracellular fluid. It has no net movement of water.

Answer 9

Isotonic

Question 10

It is a type of tonicity wherein lower concentration of solutes in extracellular fluid than intracellular fluid. Where water enters the cell.

Answer 10

Hypotonic

Question 11

It is a type of tonicity wherein higher concentration of solutes in extracellular fluid than intracellular fluid. Where water moves out of the cell.

Answer 11

Hypertonic

Question 12

Explanation of Hypotonic in plant cells.

Answer 12

Becoming turgid – Plant cells do not burst due to their cell wall. Cell membrane exerts high turgor pressure preventing more water to enter the cells.

Question 13

Explanation of Isotonic in plant cells.

Answer 13

When the flow of water into the cell and out of the cell exists in equilibrium then the plant cells are said to be flaccid.

Question 14

Explanation of Hypertonic in plant cells.

Answer 14

Plasmolysis – detachment of cell membrane from the cell wall due to shrinking.

Question 15

What type of tonicity is “becoming turgid”?

Answer 15

Hypotonic

Question 16

What type of tonicity is “flaccid”?

Answer 16

Isotonic

Question 17

What type of tonicity is plasmolysis?

Answer 17

Hypertonic