# Biology/Physics

100 Questions - Developed by: Vilde - Developed on: - 1.594 taken

• 1
- mol is a unit of the quantity: amount of substance
• 2
- kmol is a unit of the quantity: amount of substance
• 3
- mmol / ml is a unit of the quantity: amount of substance
• 4
- mmol is not a unit of the quantity: amount of substance
• 5
- Mol is not a unit of the quantity: mass
• 6
- One mol of substance can be expressed by means of the mass units
• 7
- One mol of substance can be unambiguously (positively) expressed using the volume
units
• 8
- The mass of a sample (matter) can be expressed by means of (converted to) the number of molecules
• 9
- The molar mass does not determine the relation between the mass and the amount of
substance
• 10
- The molar mass determines the relation between the mass and the amount of substance
• 11
- The unit mol / ml represents the molar concentration
• 12
- The unit mmol / ml represents the molar concentration
• 13
- The unit mmol / ml does not represent the molar concentration
• 14
- The unit mol / kg represents the molar concentration
• 15
- One mol is approx. 6 x 10^23 mg
• 16
- One mol always represents 6 x 10^23 atoms
• 17
- One kmol is approx. 6 x 10^26 particles
• 18
- One mol is not approx. 6 x 10^26 particles
• 19
- The data obtained at mol / l can be also expressed as kg / l
• 20
- The data obtained at mol / l can be also expressed as mmol / l
• 21
- The data obtained at kg / l cannot be also expressed as mol / l
• 22
- The value of mol / l is identical to the value of mmol / ml
• 23
- The value of mol / l is not identical to the value of mmol / ml
• 24
- mg / ml is the unit for the density
• 25
- mg / ml is the unit for the concentration
• 26
- kg / l is not the unit for the density
• 27
- kg / l is not the unit for the concentration
• 28
- The same units are used for the density and the concentration
• 29
- The same units are not applicable for the density and the concentration
• 30
- Errors of measurement can be instrumental and methodological
• 31
- Errors are exclusively random and instrumental
• 32
- Measurements cannot be influenced by personal error
• 33
- An inappropriate calibration of the device results in an instrumental error
• 34
- The dimension of relative error is the same as the dimension (units) of the result
• 35
- Dimension of relative error is not the same as the dimension (units) of the results
• 36
- Absolute error of the measurement is expressed in per cent
• 37
- Absolute error of the measurement is not expressed in per cent
• 38
- Relative error equals to the ratio of the absolute error and the result
• 39
- Relative error is expressed in per cent
• 40
- Statistical error cannot be expressed as both the absolute and the relative errors
• 41
- Statistical error (of the measurement) can be expressed as both the absolute and the
relative errors
• 42
- SEM (SE) determines the interval in which the arithmetic mean (average) is practically
never located
• 43
- SEM (SE) determines the interval in which the arithmetic mean (average) is highly probably located
• 44
- There is over 60% probability that the arithmetic mean (average) is located in the interval between the mean minus SEM (SE) and the mean plus SEM
• 45
- There is below 60% probability that the arithmetic mean (average) is located in the interval between the mean minus SEM (SE) and the mean plus SEM
• 46
- There is over 60% probability that the individual measurement appears in the interval between the arithmetic mean (average) minus SD and the mean plus SD
• 47
- There is below 70% probability that the individual measurement appears in the interval between the arithmetic mean (average) minus SD and the mean plus SD
• 48
- Instrumental error of the measurement is always expressed in per cent
• 49
- Random error of the measurement can be expressed in per cent
• 50
- SEM (SE) is always expressed in per cent
• 51
- SD can be expressed in per cent
• 52
- Arithmetic mean (average) is the most appropriate value that characterizes given quantity (at least within the normal Gauss distribution)
• 53
- Arithmetic mean (average) equals to the total (the sum) of all individual measurements (data) divided by the number of these measurements
• 54
- Arithmetic mean (average) equals to the total (the sum) of all individual measurements (data) multiplied by the number of these measurements
• 55
- Arithmetic mean (average) is the most accurate value of each quantity
• 56
- Arithmetic mean (average) is the most probable value for Gauss normal distribution
• 57
- Arithmetic mean (average) never equals to the most frequently measured value
• 58
- Arithmetic mean (average) may equal to the most frequently measured value
• 59
- Arithmetic mean (average) is practically identical with median in the data of the normal Gauss distribution
• 60
- Arithmetic mean (average) cannot equal to median
• 61
- Arithmetic mean (average) cannot equal to modus (mod)
• 62
- Modus (mod) may equal to median
• 63
- Modus (mod) never equals to median
• 64
- Modus (mod) is the „middle“ value (at least half of the values is more or equal to modus and, at the same time, at least half of the values is less or equal to modus)
• 65
- Median is the most frequent value
• 66
- In the data set: 2, 2, 3, 2, 3 – the modus (mod) is 2
• 67
- In the data set: 2, 2, 3, 2, 2 – the modus (mod) is 3
• 68
- Modus (mod) is the most frequent value in the data set
• 69
- In the data set: 2, 2, 3, 3, 2 – the median is 2
• 70
- Median is the „middle“ value (at least half of the values is more or equal to median and, at the same time, at least half of the values is less or equal to median)
• 71
- The calibration means to adjust the zero on the device
• 72
- Biosignals are all signals produced by organs and tissues within the body
• 73
- Nerve impulses do not represent the biosignal
• 74
- Nerve impulses represent the biosignal
• 75
- Electromyographic signal does not represent the biosignal
• 76
- Electromyographic signal represents the biosignal
• 77
- The mass of myocardium represents the biosignal
• 78
- Signal is a form of matter carrying the information
• 79
- Signal is a form of matter that does not carry the information
• 80
- Electric current cannot represent any signal
• 81
- Electric current can represent the signal
• 82
- Pressure cannot represent any signal
• 83
- Pressure can represent the signal
• 84
- Non-electric signal is transformed into the electrical one by transducers in order to process them using electrical equipment
• 85
- A transducer may employ the changes of electrical resistance
• 86
- A transducer cannot employ the changes of capacity
• 87
- A transducer cannot employ the changes of electrical resistance
• 88
- A transducer may employ the changes of capacity
• 89
The negative feedback is the information acquired by the system that „amplify“ the deflection (increases the input signal even more when the output increases)
• 90
- The negative feedback is the information acquired by the system that „attenuates“(reduces) the deflection (decreases the input signal when the output increases)
• 91
- The positive feedback is the information acquired by the system that „amplify“ the deflection (increases the input signal even more when the output increases)
• 92
- The positive feedback is the information acquired by the system that „attenuates“(reduces) the deflection (decreases the input signal when the output increases)
• 93
- The longer the period, the higher the frequency of periodic behavior
• 94
- The longer the period, the lower the frequency of periodic behavior
• 95
- The higher the amplitude, the lower the frequency of periodic behavior
• 96
- The higher the amplitude, the higher the frequency of periodic behavior
• 97
- The higher the frequency, the shorter the period of periodic behavior
• 98
- The lower the frequency, the longer the period of periodic behavior
• 99
- The shorter the period, the higher the amplitude of periodic behavior
• 100
- The longer the period, the lower the amplitude of periodic behavior