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physiology > Lab 8 past Qs > Flashcards

Lab 8 past Qs Flashcards

1
Q

List the 3 possible interactions btw gamma radiation and matter

A

Photoelectric effect, Compton Scattering and Pair production

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2
Q

What is Compton Scattering?(

A

γ-photon colliding with free or loosly bound electron in the absorber

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3
Q

Which radiation type has the highest ionizing ability?(

A

alpha

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4
Q

Where is progesterone produced?(

A

ovary, and small amounts in adrenal medulla)

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5
Q

What is detected in pregnancy in humans?(

A

presens of hCG secretion by trophoblast cells in placenta)

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6
Q

What is pair production?(

A

may happend when high energy photon come near atomic nucleus of the absorber

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7
Q

Give step of ELISA?

A

(enzyme linked to antigen or antibody, after immunological reaction and separation a chromogenic substrate of the given enzyme is added. If complex exist, colour reaction)

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8
Q

What is the shortest effective distance?

A

alpha

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9
Q

What is the strongest pervasive radiation?

A

gamma

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10
Q

Which ions inhibit iodine accumulation?

A

(thiocyanate ions)

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11
Q

Particles in Beta-radiation

A

(electron and positron)

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12
Q

Which radiation has longest effective distance?(

A

gamma

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13
Q

Which radiation has strongest effective pervasivness?(

A

gamma

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14
Q

name the isotopes of hydrogen.(

A

protium, deuterium and tritium

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15
Q

What is background count?(

A

cosmic radiation and internal electronic noise of the apparatus

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16
Q

How to detect progesterone in blood? (

A

ELISA + RIA)

17
Q

Which animals can estrone sulphate be detected in the blood by ELISA or RIA?

A

(Swine and Horse

18
Q

Most common Hydrogen isotope?(

A

protium

19
Q

What does alfa particles consist of?(

A

2 protons and 2 neutrons = Helium nucleus

20
Q

What does gamma particles consist of?(

A

quantum of electromagnetic radiation of high energy

21
Q

Define Becquerel

A

(number of disintegrations per second

22
Q

The steps of RIA

A

separate unbound and measure thebound fraction

23
Q

Definition of isotopes(

A

elements with same proton number but different neutron numbers

24
Q

Which radiation has weakest effective pervasivness?(

A

alpha

physiology (19 decks)

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