Laboratory Techniques Flashcards

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1
Q

What is a hazard

A

anything that can cause harm

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2
Q

What is a risk

A

the likelihood of harm

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3
Q

What is LINEAR DILUTION

A

differs by equal intervals

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4
Q

What is LOG/SERIAL DILUTION?

A

differs by constant proportion

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5
Q

What is a standard curve used for?

A

to determine unknown concentrations

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6
Q

What is a Buffer used for

A

controls pH

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7
Q

Name seperation techniques

A

Centrifuge (density)
Chromatography
Gel electrophoresis

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8
Q

Name types of gel electrophoresis

A

Native gels (don’t denature)
Size, shape, charge

SDS Page (denatures)
size alone

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9
Q

How does gel electrophoresis work?

A

charge applied to gel matrix and molecules move through electric field

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10
Q

What is the isoelectric point

A

pH at which the protein has no charge and PRECIPITATES out of solution

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11
Q

What is Immunoassay

A

detects and identifies proteins using monoclonal antibodies (same specificity)

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12
Q

What is western blotting

A

seperates proteins put on solid medium and identified using antibodies with reporter enzymes attached

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13
Q

Name 2 types of Microscopy

A

bright field
Fluorescence

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14
Q

What does bright field microscopy identify

A

Whole cells
Parts of cells
thin sittue sectionsW

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15
Q

What does fluorescence microscopy identify

A

views molecule structures in cells with specific fluorescent labels

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16
Q

name types of cell lines and their types of divisions

A

primary (limited)
tumour (unlimited)

17
Q

How are colonies counted

A

solid media = serial dilution
liquid media = haemocytometer

18
Q

What is a disadvantage of colony counting

A

only counts dead cells
small cells hard to locate

19
Q

Why do cells need serum

A

contains growth factors w proteins

20
Q

Why are cells diluted before counting

A

direct count provides no viable cell count