Energy requirements of living cells

Question 1

What is cellular respiration

Answer 1

The process that supplies all living cells with energy

Question 2

Where does cellular respiration take place

Answer 2

In the mitochondria

Question 3

What are the parts of a mitochondria

Answer 3

Outer membrane 
Inner membrane
Mitochondrial DNA
Cresta 
Ribosomes 
Matrix

Question 4

What is the outer membrane permeable to

Answer 4

Gas and H2O

Question 5

Describe the inner membrane

Answer 5

Folded in crestas to increase surface area for attachment of respiratory enzymes

Question 6

Describe the matrix

Answer 6

Contains enzymes needed for Krebs cycle (klebs cycle)

Question 7

What is the function of ribosomes

Answer 7

produce enzymes to control reactions

Question 8

The inner and outer layer make a

Answer 8

double layer

Question 9

Why do animal need more energy than plants

Answer 9

More mitochondria

Question 10

what do animals need energy for

Answer 10

muscle fibres

conduction of nerve impulses

Question 11

Why do plants require energy

Answer 11

Uptake of mineral salts from the soil
transporting food
opening and closing stomata

Question 12

What happens during cellular respiration

Answer 12

Glucose breaks down to release chem energy

Question 13

What is the energy in cellular respiration used for and what does it do

Answer 13

Used to make ATP and powers all metabolic processes in the cell

Question 14

What part do enzymes play in cellular respiration

Answer 14

They control different steps of respiration to prevent all the energy to be released at once

Question 15

What does the controlling of energy do

Answer 15

Prevents temp from exceeding 37C

Question 16

What is the raw material needed for respiration?

Answer 16

Glucose and Oxygen

Question 17

What is the chemical reaction for respiration

Answer 17

C6H12O6 + O2 —> CO2 + H2O + ATP

enzymes

Question 18

respiration vs photosynthesis

Answer 18

Catabolic Anabolic
All living Green plants
Energy released Energy stored
No light Need light
Read bottom of table for last stuff

Question 19

What is combustion

Answer 19

Chem reaction where a substance reacts rapidly with O2 to produce heat + light

Question 20

What are the stages of Aerobic respiration why are they needed

Answer 20

Glycolysis
Krebs cycle (klebs cycle)
Oxidative phosphorylation

They prevent All the energy to be released in one go

Question 21

Explain glycolysis (1st)

Answer 21

In cytoplasm surrounding mitochondria
No O2
Glucose —> 2 molecules pyruvic acid (energy rich H atoms)
Small energy released, converted to 2 x ATP

Question 22

Explain Krebs cycle (Klebs cycle)

Answer 22

MITOCHONDRIA 
O2  NEED
PYRUVIC ACID ENTERS MITOCHONDRIA AND JOINS CYCLIC SERIES OF REACTIONS (EN H-ATOMS REMOVED FROM ACID)
CO2 AND EN H-ATOMS released
CO2 OUT 
H-ATOMS NEXT STAGE

Question 23

Oxidative phosphorylation

Answer 23

In mitochondria
H atoms that were removed go through a series of oxidation reactions that release energy
EN is used to convert ADP into ATP (phosphorylation)
ATP + H2O released (read note)