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Term
Osmosis Water moves across a membrane
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Choose definitionMitochondrion1Powerhouse of the cell✓2Stores the genetic material3Builds proteins
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1 · Osmosis✓2 · Ribosome✓3 · Cell nucleus✗
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Question · correct = +30 bonusPowerhouse of the cellCorrect · +30 bonus
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Photosynthesis, Year 9
QDone: 24 cards created.
ChlorophyllGreen pigment in leavesStomataPores in the leafGlucoseProduct of photosynthesis
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Question 4 of 10 · Cell biology
Podcast→
Episode 3 · Cell biology
❚❚4:12 / 9:30
Summary→
Chapter 2 · Cell biologyMitochondriaThey gain energy from glucose and store it as ATP.
Glucose→Pyruvate→ATP
RememberMitochondria have their own DNA.
10 min read12 exercises
Video→
Chapter 2 · Cell biology
Structure How a mitochondrion is built
4:12-21:20
1×UT
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Focus
24:43
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TermOsmosisTap to flip
DefinitionWater moves through a membrane towards the higher concentration.
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1Mitochondrion produces ATP✓
2Ribosome stores water✕
3Cell membrane separates✓
4Chloroplast → photosynthesis✓
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Question 4 of 1014 min left
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Question 4Definition → Term
Which organelle supplies the cell with energy?
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Cell biology
Transcript
Mitochondria, the powerhouse
Every cell is surrounded by a membrane. It decides what gets in and what stays out.
Inside is the cytoplasm, a thick fluid in which the organelles float.
Now on to the powerhouse of the cell: the mitochondria.
This is where cellular respiration takes place. Glucose and oxygen produce ATP, the cell's energy currency.
Mitochondria have their own DNA. This suggests they were once independent bacteria.
Inside the cell
Mitochondria, the powerhouse
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03:37-16:32
1×
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To setCell biology
FireLearn
Chapter 2 · Mitochondria, the powerhouse
Structure

How a mitochondrion is built

Mitochondrion
Outer membrane
Smooth outer layer that encloses the mitochondrion
Inner membrane
Folded into cristae, where ATP is produced
Matrix
Fluid interior, site of the citric acid cycle
Its own DNA
Ring-shaped, like in bacteria
Process

Cellular respiration in four steps

Glucose
Sugar from food
Glycolysis
Splitting in the cytoplasm
Citric acid cycle
Breakdown in the matrix
ATP
Energy for the cell
By the numbers

How many mitochondria does a cell have?

up to0
mitochondria in a single liver cell
Liver and muscle cells need particularly large amounts of energy.
Let's look at how a mitochondrion is built.
3:34-21:58
1×

Inside the cell

7 chaptersGermanFemale voice
Chapters
What makes up a cell3:12
Mitochondria, the powerhouse4:05
3The nucleus is in control3:40
4Ribosomes and proteins3:25
5Membranes and transport3:50
6Cell division step by step4:05
7Comparing plant and animal cells3:15
Cell biologyPage 3 of 8
Chapter 2
Mitochondria, the powerhouse of the cell

In cellular respiration, mitochondria extract energy from glucose and store it as ATP.

Cellular respiration
Breakdown of glucose with oxygen into carbon dioxide and water. This produces ATP.
GlycolysisCytoplasm
→
Citric acid cycleMatrix
→
Respiratory chainInner membrane
RememberMost ATP is produced in the respiratory chain on the inner membrane.
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