Chapter 2.6

Question 1

True or false - Energy flows in multiple directions in an ecosystem

Answer 1

False - It only flows in one direction

Question 2

What are four examples of how energy is used in living organisms?

Answer 2

Building compounds, Internal communication, Physical movement, Transport

Question 3

What are Building Compounds?

Answer 3

All organisms use energy to build and replicate molecules so they can manage metabolic processes, grow and pass information onto offspring

Question 4

What is Internal Communication?

Answer 4

Energy is needed for communication between cells and also needed when nerves transmit information throughout the body.

Question 5

What is Physical Movement?

• In humans
• In plants

Answer 5

• Energy is needed for physical movement, such as movement of leg or arm muscles, and involuntary movement such as contraction of the heart.
• Energy is used for movements towards sunlight.

Question 6

What is Transport?

Answer 6

Energy is needed to move nutrients and wastes throughout the body. It’s also needed to transport materials in and out of cells.

Question 7

What is the word equation for cellular respiration?

Answer 7

glucose + oxygen ===> carbon dioxide + water + 36ATP

Question 8

What is the chemical equation for cellular respiration?

Answer 8

C6H12O6 + 6O2 ===> 6CO2 + 6H2O + 36ATP

Question 9

What steps are involved in cellular respiration?

hint: there’s two!

Answer 9

glycosis (anaerobic respiration) and aerobic respiration

Question 10

What is aerobic respiration?

Answer 10

Each cell uses oxygen to burn glucose and convert the energy into ATP. Because oxygen is used in this process, it’s called aerobic respiration.

Question 11

What is anaerobic respiration?

Answer 11

When we exercise, our bodies run out of oxygen for aerobic respiration so they switch to producing energy without oxygen and lactic acid is produced as a waste product. Anaerobic respiration doesn’t produce as much energy as aerobic respiration so as a result, our muscles feel weaker.

Question 12

Where does cellular respiration occur?

Answer 12

In the mitochondria

Question 13

What is ATP and how much ATP is produced in total from cellular respiration?

Answer 13

i) Our bodies use ATP for energy

ii) 36/38ATP

Question 14

How does Cellular respiration link to Photosynthesis?

Answer 14

The waste products of Cellular respiration (CO2 and H20) are then used by the chloroplasts again, along with more new chemicals.