Biochemistry Flashcards

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1
Q

Inorganic compounds (5)

A
  • no living origin
  • no C
  • elements and simple
  • don’t burn in O
  • eg. water
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2
Q

Monomers

A

Single molecules

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3
Q

Polymers

A

Long molecules formed by repeating patterns of monomers

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4
Q

Water (4)

A
  • through photosynthesis, source of O
  • solvent, medium, reagent
  • habitat
  • bone tissue = 20%, brain cells = 85%, body = 70%
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5
Q

Oxygen

A

Strong, attracts a lot of electrons, negative

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6
Q

Hydrogen

A

Weaker, positive

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7
Q

Water has

A

Polar molecules, one side +, one side -

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8
Q

Hydrogen bonds

A

Form between water molecules

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9
Q

Cohesion

A

Attraction between like substances

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10
Q

Adhesion

A

Attraction between different substances

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11
Q

Hydrophilic

A

Substances that dissolve in water

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12
Q

Hydrophobic

A

Substances that don’t dissolve in water

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13
Q

Non polar moelecules

A

No charges, cannot break H bonds, cannot bond with water

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14
Q

Ice floats

A

At 0 degrees, bonds freeze, rigid, move further away, less dense

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15
Q

Water has a

A

Very high heat capacity

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16
Q

pH scale

A

Indicates degree of acidity or alkalinity

17
Q

pH 0-6

A

Acid

18
Q

pH 7

A

Neutral

19
Q

pH 7-14

A

Alkaline

20
Q

Enzymes prefer

A

pH 7.2 - 7.4

21
Q

Blood

A
  • pH 7.4
  • too acidic, coma, death
  • too basic, nerve problems, convulsions
22
Q

Buffer

A

Substance that counteracts pH changes, organisms have natural buffers

23
Q

Acid + Base

A

Salt and water

24
Q

When salts dissolve in water

A

Ions dissociate to form electrolytes, conduct currents, important role in conducting nerve impulses and muscle functioning

25
Q

Organic Compounds (7)

A
  • living origin
  • large amount of C + H, N, O, P
  • combustible in O
  • large and complex
  • C atoms share electrons, covalent bonds
  • eg. carbs, lipids, proteins
  • life processes, homeostasis, cell function, energy