Body fluid

Question 1

Percentage of fluid and solid within the body based on gender.

Answer 1

Female - 55% fluid, 45% solid
Male - 40% fluid, 60% solid

Question 2

What is the name of the fluid surrounding the cell?

Answer 2

Interstitial fluid.

Question 3

Measurement of the ICF and ECF.

Answer 3

Intracellular fluid - 2/3 of the total body fluid
Extracellular fluid - 1/3 of the total body fluid (interstitial fluid - 80%, plasma - 20%)

Question 4

What is the difference between the passive and active process?

Answer 4

Passive process - transport process without energy, along the concentration gradient
Active process - transport process requires energy, against the concentration gradient

Question 5

What are some types of passive processes?

Answer 5

Diffusion - net movement of molecules from an area of high concentration to area of low concentration
Osmosis - diffusion of water

Question 6

What factor affect diffusion?

Answer 6

Difference in gradient, surface area, thickness of membrane, mass of particles, and temperature

Question 7

What is the difference between simple and facilitated diffusion?

Answer 7

Simple diffusion does not need anything to cross whilst facilitated diffusion need help (either channel or carrier mediated).

Simple diffusion:
- hydrophobic
- uncharged
- non-polar

Question 8

What is secretion?

Answer 8

Cell trying to release certain substance or packet from plasma membrane to exterior.

Exocytosis - release of molecules

Question 9

What is absorption?

Answer 9

Substance moves into the cell.

Endocytosis - entering of molecules