B1 W1 Flashcards

(45 cards)

1
Q

Transmission Electron Micrography

A

Beam of electrons with magnet is passed through specimen with heavy metal stain

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2
Q

Vesicles containing oxidative enzymes which carry out lipid metabolism and detoxification

A

Peroxisomes- they generate H202 which is then metabolised by catalse -> H20 and O2

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3
Q

Organelles of cisternae which assemble, modify and package cell complexes and lies close to the nucleus

A

Golgi apparatus

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4
Q

Symporters

A

Move one molecule along conc gradient and one molecule against it

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5
Q

Organelle carries out autophagy

A

Lysosyme

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6
Q

Site of Krebs cycle

A

Mitochondrial matrix

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7
Q

Citric acid/ Tricarboxylic acid cycle

A

Krebs cycle- occurs in the mitochondrial matrix

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8
Q

Network of fibres which holds the cell together

A

Cytoskeleton

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9
Q

Process where amino acid enters the Krebs cycle as an intermediate

A

Deamination

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10
Q

Molecule that cannot be converted into glucose

A

Fatty acids

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11
Q

Catabolism

A

Breakdown of molecules

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12
Q

Site of oxidative phosphorylation

A

Inner mitochondrial membrane

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13
Q

Molecule in phospholipid bilayer which strengthens the membrane and reduces fluidity and water loss

A

Cholesterol

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14
Q

Site of ribosome synthesis

A

Nucleolus

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15
Q

Site of electron transport chain and ATP powered pump in oxidative phosphorylation

A

Cristae of mitochondria

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16
Q

FIlament in cell cytoskeleton which extends from the centre and forms a bridge

A

Microtubules

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17
Q

Site of link reaction

A

Mitochondrial matrix

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18
Q

Site of fatty acid beta oxidation

A

Mitochondria

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19
Q

Cori Cycle

A

Gluconeogenesis from lactate-> pyruvate -> glucose, producing net 6ATP

20
Q

Which molecules can pass through the membrane?

A

Water and lipid soluble molecules

21
Q

Which molecule cannot be stored?

22
Q

Adrenaline effect on glucose

A

Causes glycogenolysisby binding to metabatropic receptors for cAMP signalling

23
Q

SEM

A

Specimen coated in heavy metal is scanned by electron beam and creates 3D image

24
Q

Pentose phosphate pathway

A

Metabolic pathway which generates NADPH for fatty acid synthesis and ribose-5 phosphate for nucleotide synthesis

25
Which molecules cannot pass through the membrane?
Water soluble drugs/hormones, ions and polar molecules
26
Lactate fermentation
Formation of lactate from pyruvate, which generates NADH
27
Microscopy where light is passed through 2 filters
Fluorescent light microscopy
28
Ketone bodies
Water soluble, formed in the liver during starvation
29
Uniporter which transports glucose
GLUT4 transporter
30
How is equlibrium established for membrane potential?
Leaky K+ channels which create high permeability and the Na+/k+ pump
31
Hunger, dizziness, tiredness, palpitations
Hypoglycaemia
32
Oxidation provides most energy
Fats- 9kcal. It is an unlimited energy store.
33
Movement of glucose against its conc gradient
Na+/glucose cotransporter
34
Thirst, need to pee, unintentional weight loss, sweet breath, feeling sick
Hyperglycemia
35
Site of protein synthesis
RER- contains ribosomes
36
RER
Carries out post translational modification
37
H attached to carbon is on the same side as the double bond
Cis unsaturated fatty acids which are more kinky and make the membrane more fluid
38
Site of carbohydrate and lipid synthesis
Smooth RER
39
Anabolism
Synthesis of compounds in the cell
40
Isoforms
Functionally similar proteins with same MRNA but different introns are removed
41
Site of glycolysis
Cyptoplasm
42
Water filled pores that allow ions to move against conc gradient
Channel protein
43
Filament in cytoskeleton near membrane which provides structural support
Actin
44
Product of beta oxidation
Acetyl coA
45
Cytoskeleton components
Actin, intermediate filaments and microtubules