Cellular respiration
Presentation
•
Biology
•
11th - 12th Grade
•
Practice Problem
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Medium
Standards-aligned
Roy Mathews
Used 1K+ times
FREE Resource
5 Slides • 13 Questions
1
Cellular respiration
by Roy Mathews
Glucose + oxygen --> carbon dioxide + water + ATP
2
Cellular respiration is the process that releases energy in glucose to make ATP, the molecule that powers all the cell activities.
Cellular respiration involves many chemical reactions. These can be grouped into three stages:
GLYCOLYSIS
KREBS CYCLE (CITRIC ACID CYCLE)
ELECTRON TRANSFER CHAIN
3
GLYCOLYSIS
Glycolysis occurs in the cytoplasm of the cell.
Each glucose molecule is broken down into 2 pyruvate molecules.
Two molecules of ATP are produced in the breakdown.
4
Krebs cycle (Citric acid cycle)
Occurs in the matrix of the mitochondria.
As pyruvate passes around this cycle, the rearrangement of atoms occurs. CO2 and H atoms are produced.
CO2 is a waster that diffuses out of the mitochondria.
Hydrogen atoms are picked up by a carrier molecule (NAD)
5
Electron transfer chain
Occurs in the inner membrane of the mitochondria (cristae)
Hydrogen atoms are ionised and their high-energy electrons are passed along a series of acceptor molecules.
As the electrons are bounced along the electron transfer chain, their energy is used to form ATP from ADP.
6
Multiple Choice
Two substances needed for aerobic respiration are:
Glucose and water
Glucose and carbon dioxide
Glucose and oxygen
water and carbon dioxide
7
Multiple Choice
Structures that increase the surface of the inner membrane of the mitochondria are:
cristae
villi
microvilli
hair roots
8
Multiple Choice
Part of the cell where glycolysis, the first stage of cellular respiration occurs is:
cytoplasm
matrix of the mitochondria
cristae of mitochondria
endoplasmic reticulum
9
Multiple Choice
Place where Krebs cycle occurs in the cell is:
cytoplasm
matrix of the mitochondria
cristae of mitochondria
the outer membrane of mitochondria.
10
Multiple Choice
Cell organelle where most reactions of cellular respiration occurs is the:
ribosome
mitochondria
lysosome
Gogi apparatus
11
Multiple Choice
The electron transfer chain, the final stage of cellular respiration occurs in the:
cristae of mitochondria
matrix of mitochondria
outer membrane of mitochondria
the cytoplasm of the cell.
12
Multiple Choice
What stage of cellular respiration produces the most number of ATP?
Glycolysis
Krebs cycle
Electron transfer chain
anaerobic respiration
13
Multiple Choice
What statement is NOT correct about mitochondria?
It has a double membrane
The matrix contains several enzymes
Substances cannot diffuse through its membranes.
Cristae increase the surface area of inner membrane.
14
Multiple Choice
How many molecules of ATP are created from one molecule of glucose by aerobic respiration?
38
2
30
20
15
Multiple Choice
What substance is not needed for anaerobic respiration?
Carbon dioxide
oxygen
glucose
enzymes
16
Multiple Choice
What waste material is produced by both aerobic and anaerobic respiration?
carbon dioxide
lactic acid
ethanol
ATP
17
Multiple Choice
One of the reasons why large numbers of mitochondria are found in muscle cells is because:
muscles get lots of oxygen
muscle cells require lots of energy.
muscle cells can tolerate high levels of CO2
muscle cells are larger than other body cells.
18
Multiple Choice
Cells that carry out active transport contain large numbers of mitochondria because:
Active transport requires ATP
Active transport happens in the mitochondria
the double membranes of mitochondria are not permeable
active transport uses CO2 produced during respiration.
Cellular respiration
by Roy Mathews
Glucose + oxygen --> carbon dioxide + water + ATP
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