Exam questions in biophysics (practicum) (1st Faculty of the UK, UK)
From WikiLectures
Below you will find frequent and popular questions that are asked during the continuous examination of biophysics practicals.
Electricity[edit | edit source]
- draw and describe the I/t curve
- draw and describe the I/t curve of rectangular and slanted impulses, say which part of the curve we are interested in and which of the two impulses is used and why
- what if rheobase, how long does it last (catch - however long)
- what is chronaxia
- explain DD and IF currents and what they are used for
- what is impedance and how is it expressed by the formula
EKG[edit | edit source]
- draw and describe the curve
- be able to describe it even after turning 180°
- electrical line of the heart - what is it, draw, units, physiological range, where will the vector go in obese people
- the difference between the electrode and the lead
- know the types of leads, which color belongs where on the body
- drawing a unipolar lead, e.g. on the right hand (place a 5kΩ resistor in advance!)
- Einthoven's triangle
Acoustic[edit | edit source]
- decibel - what is it, how is it calculated
- what units do we use to determine the range of audibility (dB and Hz) and their range
- threshold of audibility of the human ear
- how is it with the frequency, for example, of the bass - if it has to be lowered or raised in order to be heard
Spectrophotometry[edit | edit source]
- range of visible light
- colors at the ends of the spectrum
- what is above and below the level of visible light (= know the spectrum)
- formula for calculating photon energy and wavelenght
Ultrasound[edit | edit source]
- mechanic undulation
- causes micro massage
- how the image is created
Optics[edit | edit source]
- draw a hypermetropia
- eye defects, on which blurred vision is based
- Balmer and Lyman series
- Photoelectric effect
- Compton phenomenon
- define near and a far point
- what is astigmatism, how is it treated, what are the types, which is more common and which is more serious
- what is myopia and how is it treated
- beam path in an optical microscope
Heat, Temperature[edit | edit source]
- the body's thermal comfort and what affects it
- what is cat value and how is it calculated
- when do we talk about subfebrile in a patient and when about febrile
- thermodynamic temperature scale, conversion
Radiation[edit | edit source]
- what is fractionation, when is it used (irradiation of tumors) and after what doses (2Gy)
- units - Becquerel, Gray, Sievert - to which quantities belong (explain) and conversion to SI
- the principle of gamma radiation absorption
Breathing & circulation[edit | edit source]
- What is Korotkoff phenomena why, when and how it occurs, how blood flows in veins normally and what happens when measuring pressure (explain the flow of liquid in a tube)
- What is the Reynolds number, how do we calculate it and derive it
- Spirometry - what we find during which measurement, what are the results for obstruction and restriction
- chart for spirometry - vital lung capacity etc.
