Biology Lab 5

Question 1

What do you call organisms that are in capable of carrying out respiration in the presence of oxygen?

Answer 1

Obligate anaerobes.

Question 2

Give three examples of things that require oxygen for respiration.

Answer 2

Humans, animals, plants.

Question 3

What is an aerobe?

Answer 3

And organism that requires oxygen for respiration.

Question 4

What do you call an organism that can survive with or without oxygen?

Answer 4

Facultative anaerobes.

Question 5

Given example of a facultative anaerobe.

Answer 5

Bacteria

Question 6

Humans and other aerobes need a continuous supply of what to act as a “terminal electron acceptor” for the chemical reactions?

Answer 6

Oxygen

Question 7

What are the waste products of respiration?

Answer 7

Water and carbon dioxide.

Question 8

What is the chemical formula for carbon dioxide?

Answer 8

CO2

Question 9

What happens if you have too much CO2?

Answer 9

It produces acidic conditions that can be harmful to cells.

Question 10

What is the general reaction for aerobic respiration?

Answer 10

C6H1206+6 O2 produces 6 CO2 +6 H2O + energy

Question 11

What is Phenolphtalein?

Answer 11

A pH indicator that will change color from clear to pink if the pH is basic (or pink to clear if the pH becomes acidic)

Question 12

What percent of CO2 does exhaled air contain?

Answer 12

3.6%

Question 13

What percent of O2 does exhaled air contain?

Answer 13

15%

Question 14

What percent of CO2 does atmospheric air contain?

Answer 14

0.04%

Question 15

What percent of O2 does atmospheric air contain?

Answer 15

21%

Question 16

What are the signs of hyperventilation?

Answer 16

Dizziness and lightheadedness

Question 17

Name two organisms that do not produce carbon dioxide as humans do

Answer 17

Bacteria and plants

Question 18

What is respiration?

Answer 18

A series of enzyme controlled reactions that yield energy, most often in the form of ATP.