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A Level Biology > Mitochondria > Flashcards

Mitochondria Flashcards

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1
Q

Why do mitochondria have a large SA?

A

For attachment of proteins needed for the final stages of aerobic respiration

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2
Q

What is the mitochondria the site of?

A

Aerobic respiration in eukaryotic cells

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3
Q

What does the inner membrane contain?

A

Protein complexes vital for the later stages of aerobic respiration embedded in it

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4
Q

What shape organelles are mitochondria?

A

Rod-shaped organelles

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5
Q

Are mitochondria large or small?

A

Large (1-2 micrometers in length)

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6
Q

What are mitochondria visible with?

A

A microscope

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7
Q

What type of membrane does mitochondria have?

A

Double membrane

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8
Q

What type of membranes are they?

A

2 phospholipid membranes

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9
Q

What is the inner membrane like?

A

Folded, less permeable, the location of ATP synthase

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10
Q

What is the outer membrane like

A

Smooth, permeable to several smooth molecules

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11
Q

What type of solution is the matrix?

A

An aqueous solution

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12
Q

Where is the matrix found?

A

Within the inner membranes of the mitochondrial

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13
Q

What is the matrix formed by?

A

The cristae

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14
Q

What does the matrix contain?

A

Enzymes needed for aerobic respiration- producing ATP
Contains ribosomes and circular mitochondrial DNA

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15
Q

What type of pH does the intermembrane space have and why?

A

A low pH- high concentration of protons

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16
Q

What is the concentration gradient across the inner membrane formed during?

A

Oxidative phosphorylation

17
Q

What is the function of the mitochondria?

A

To synthesise ATP- occurs during the last stage of respiration called oxidative phosphorylation

18
Q

What does the mitochondria rely on?

A

Membrane proteins that make up the electron transport chain and the ATP synthase enzyme

19
Q

What can the membrane do?

A

Hold many electron transport chain proteins and ATP synthase enzymes

20
Q

How does the membrane have a large SA?

A

Due to the cristae

21
Q

What do more active cell types have more of?

A

Have larger mitochondria with longer and more tightly packed cristae to enable the synthesis of more ATP due to the larger SA

22
Q

What does the number of mitochondria in each cell depend on?

A

The cell activity

A Level Biology (30 decks)

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