basic metabolism Flashcards

1
Q

what are the 10 functional groups?

A
Aldehyde
Amine
Amide
Acyl
Carboxyl
Carbonyl
Disulphide
Hydroxide
Ketone
Phosphate
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2
Q

what are the 13 important ions in the body?

A
Ammonium
Bicarbonate
Calcium
Chloride
Fluoride
Hydrogen
Hydroxide
Iron
Iodide
Magnesium
Phosphate
Potassium
Sodium
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3
Q

which ion is necessary for enzyme function?

A

magnesium

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4
Q

what are the names of the 4 common reactions?

A
  1. hydrolysis
  2. condensation
  3. oxidation - reduction
  4. energy and enzymatic
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5
Q

what occurs in a hydrolysis reaction?

and an example?

A

occurs when water is added

e.g lactose + water -> glucose + galactose

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6
Q

what occurs in a condensation reaction?

A

releases water + 2 molecules combining to form a larger one

e.g glucose + galactose -> lactose and water

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7
Q

what occurs in an oxidation-reduction reaction?

A

both oxidation and reduction occur in parallel to each other as oxidaiton is loss of electrons and reduction is gain of electrons

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8
Q

what occurs in an energy and enzymatic reaction?

A

involves enzymes as catalysts to speed up the reaction as they lower the energy barrier
enzymes can be used repeatedly as they are not consumed by the reaction

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9
Q

which elements make up fats, carbohydrates and ethanol?

A

CHO

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10
Q

which elements make up proteins?

A

CHONS

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11
Q

what are the 2 most common bonds within molecules and what briefly are they?

A

covalent - share of electrons

ionic - attraction between oppositely charged ions

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12
Q

what does it mean if an element has a positive or negative symbol next to it?

A

the charge symbolises the element in its ionic form

if they have to lose electrons when bonding, charge is positive
if they have to gain electrons when bonding, charge is negative

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13
Q

what is the difference between ammonium and ammonia?

A

ammonium is NH4+ (the ion of ammonia) and has 4 hydrogens

ammonia is NH3 and loses an electron when in a solution

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14
Q

what does the 6 in glucose-6-phosphate mean?

A

relates to the position of the phosphate

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15
Q

what components make up triglyceride?

A

esters

3 molecules of fatty acids linked to glycerol

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16
Q

structure and role of phospholipids?

A

2 fatty acids and one phosphate linked to glycerol

makes up membranes of most cells

17
Q

what are the 2 most common co-enzymes and what is a co-enzyme?

A

NADH
FADH

non-protein compound necessary for the functioning of an enzyme

18
Q

how do salts, acids and bases differ in their structure?

A

salts - cations (positively charged ions) and anions (negatively charged ions) and are formed with the interaction of acids and bases

acids - higher concentratin of protons so proton donor

bases - higher concentration of electrons so proton acceptor

19
Q

what is teh body’s energy currency and what are the different forms of it?

A

ATP/ADP/AMP

20
Q

what are hormones?

A

chemical substances produced by endrocine system and transported in vascular system to stimulate specific cells or tissues into action (have specific receptors)

e.g oestrogen

21
Q

what are enzymes?

A

proteins funcitoning as biological catalysts which speed up the rate of reaction and remain unchanged at the end of the reaction

e.g lipase

22
Q

what is glycolysis and what are the end products?

A

breaking down of glucose into energy

occurs in the cytoplasm of the cell and is a set of reactions catalysed by enzymes

uses 2 ATPs -> 4ATPs and 2 NADH

so each cycle produces 2 ATP + 2 NADH + 2 pyruvate (can be used in (an)aerobic respiration)

23
Q

what is beta oxidation and what are the end products of it?

A

catabolic process of getting energy from long fatty acid chains (breaking them down)

occurs in the mitochondria

produces 1 FADH, 1 NADH and acetyl CoA

24
Q

what are the products of the electron transport chain?

A

NADH (oxidised) -> 3 ATP
FADH2 (oxidised) -> 2 ATP
each cycle produces 1 H2O

occurs across inner membrane of mitochondria

25
Q

name and describe the 3 steps of protein synthesis?

A
  1. transcription - copying dna to mrna
  2. translation - initiation, elongation and termination reading of mrna to make polypeptide chain
  3. . post translation modifications - folding into useful structures