Structure and functions in different organisms

Question 1

What are enzymes (definition)?

Answer 1

Biological catalysts in metabolic reactions

Question 2

What is the definition of diffusion?

Answer 2

The movement of particles from an area of high concentration to an area of low concentration.

Question 3

What is the definition of osmosis?

Answer 3

The movement of water from an area of high water potential to a low water potential across a partially permeable membrane.

Question 4

What is active transport?

Answer 4

A process required to move molecules against a concentration gradient (low to high concentration). The process requires energy.

Question 5

What is the word equation for anaerobic respiration in animals?

Answer 5

Glucose—-> lactic acid

Question 6

What is the word equation for anaerobic respiration in yeast and plants?

Answer 6

Glucose—> ethanol + carbon dioxide

Question 7

What are four differences between aerobic and anaerobic respiration?

Answer 7

-aerobic uses oxygen as a reactant whereas anaerobic does not use any oxygen
-aerobic releases more energy than anaerobic
-aerobic releases carbon dioxide whereas anaerobic releases lactic acid
-anaerobic would occur within conditions with a lack of oxygen, whereas aerobic occurs in oxygenated conditions