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OCR A-LEVEL Biology > Module 2 Section 2 - Inorganic Ions > Flashcards

Module 2 Section 2 - Inorganic Ions Flashcards

1
Q

What is an ion

A

An atom that has an electric charge

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2
Q

What is an ion with a positive charge called

A

Cation

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3
Q

What is an ion with a negative charge called

A

Anion

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4
Q

What is an inorganic ion

A

An ion that doesn’t contain carbon

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5
Q

What are the inorganic cation that we need to know

A

Calcium
Sodium
Potassium
Hydrogen
Ammonium

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6
Q

What is the chemical symbol for calcium

A

Ca 2+

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7
Q

What is the chemical symbol for sodium

A

Na +

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8
Q

What is the chemical symbol for potassium

A

K +

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9
Q

What is the chemical symbol for hydrogen

A

H +

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10
Q

What is the chemical symbol for ammonium

A

NH4 +

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11
Q

What are the inorganic anions we need to know

A

Nitrate
Hydrocarbonate
Chloride
Phosphate
Hydroxide

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12
Q

What is the chemical symbol for nitrate

A

NO3 -

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13
Q

What is the chemical symbol for hydrocarbonate

A

HCO3 -

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14
Q

What is the chemical symbol for Chloride

A

Cl -

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15
Q

What is the chemical symbol for phosphate

A

PO4 3-

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16
Q

What is the chemical symbol for hydroxide

17
Q

Give an example of roles of calcium in biological processes

A

Calcium is involved in the transmission of nerve impulses
the release of insulin from the pancreas
Acts as a cofactor for many enzymes
Important for nine formation

18
Q

Give an example of roles of sodium in biological processes

A

Important for generating nerve impulses for muscle contraction
Regulating fluid balance

19
Q

Give an example of roles of potassium in biological processes

A

Important for generating nerve impulses for muscle contraction
Regulating fluid balance
Activates essential enzymes

20
Q

Give an example of roles of hydrogen in biological processes

A

Affects pH substances
Important for photosynthesis reactions that occur in thylakoid membranes inside chloroplast

21
Q

Give an example of roles of ammonium in biological processes

A

Absorbed from soil in plants
important source of nitrogen

22
Q

Give an example of roles of nitrate in biological processes

A

Absorbed from soil by plants
Important source of nitrogen

23
Q

Give an example of roles of in hydrocarbonate biological processes

A

Acts as a buffer, which helps to maintain pH of blood

24
Q

Give an example of roles of chloride in biological processes

A

Involved in chloride shift - helps maintain pH of blood during gas exchange
Acts as cofactor for the enzyme amylase
Involved in some nerve impulses

25
Q

Give an example of roles of phosphate in biological processes

A

Involved in photosynthesis and respiration reactions
Needed for synthesis of many biological molecules

26
Q

Give an example of roles of hydroxide in biological processes

A

Affects pH of substances

OCR A-LEVEL Biology (48 decks)

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