Unit 5 Cell Energy

Question 0

What is thermodynamics?

Answer 0

The study of the flow and transformation of energy

Question 1

What is a autotroph? What is a heterotroph?

Answer 1

An autotroph makes it’s own food & a heterotroph has to digest food

Question 2

What is the 1st law of thermodynamics?

Answer 2

Energy can be converted, but it cannot be created nor destroyed

Question 3

What is the 2nd law of thermodynamics?

Answer 3

Energy cannot be converted without the loss of usable energy

Question 4

What is metabolism?

Answer 4

All of the chemical reactions in a cell

Question 5

What is a metabolic pathway?

Answer 5

A series of chemical reactions in which the product of one reaction becomes the reactant of the next reaction

Question 6

What is a catabolic pathway? What is an ex?

Answer 6

A pathway where energy is released to break down molecules into smaller parts. Ex: cellular respiration

Question 7

What is an anabolic pathway? What is an ex?

Answer 7

A pathway where energy is consumed to build bigger molecules. Ex: photosynthesis

Question 8

ATP is a…

Answer 8

Nucleic acid

Question 9

When does ATP release energy? When does it store?

Answer 9

When the bond between the 2nd & 3rd phosphate group is broken. When a bond is formed between the 2nd & 3rd phosphate groups

Question 10

What are the requirements for photosynthesis?

Answer 10

Carbon dioxide, water, and sunlight

Question 11

What are the end products of photosynthesis?

Answer 11

Glucose & oxygen

Question 12

Where do the light dependent reactions occur? Where do the light independent reactions occur?

Answer 12

In the thylakoids; in the stroma

Question 13

What do light dependent reactions require? What do they make?

Answer 13

They require sunlight & water. They make ATP, NADPH, & oxygen gas

Question 14

What do light independent reactions require? What do they make?

Answer 14

They require carbon dioxide, ATP, & NADPH. They make glucose

Question 15

What are the requirements of cellular respiration? What does it produce?

Answer 15

Requires oxygen & glucose. Produces energy, carbon dioxide, and water

Question 16

What are cellular respirations 3 phases?

Answer 16

Glycolysis, Krebs cycle/ citric acid, & electron transport chain

Question 17

Where does glycolysis occur? What is the net gain of ATP?

Answer 17

In the cytosol; 2

Question 18

Where does the kreb cycle occur? What does it produce?

Answer 18

In matrix of mitochondria; 2 more ATP

Question 19

Where does electron transport occur? What is required for this step? What does it produce?

Answer 19

In the cristae of the mitochondria; oxygen; 32 ATP

Question 20

what is anaerobic respiration? What happens instead since electron transport cannot happen?

Answer 20

It is without oxygen; fermentation

Question 21

What does alcohol fermentation give microorganisms? Where does it occur?

Answer 21

It gives them glucose; occurs in yeast & bacteria

Question 22

When does lactic acid fermentation occur?

Answer 22

When too much exercising deprives muscles of oxygen