Biophysics 2

The focusing power of a lens is: 

Upon illumination, the concentration of cyclic GMP in outer segment of a photoreceptor cell

is: 

Three basic colours recognized by photoreceptor cells are: 

The wavelength of the white light is equal to: 

Paramagnetic nuclei are nuclei having: 

The protons which promote the synthesis of ATP by the enzyme ATP synthase are transported to the enzyme by: 

According to the Bekesy’s theory the distance between the amplitude of travelling waves generated on the basilar membrane for frequencies of 10,000 Hz and 100 Hz and the oval window of the cochlea: 

The resonance energy in the nuclear magnetic resonance is: 

During the resonance caused by a RF90 impulse the transverse magnetization (M13) of protons: 

The relaxation time T2 can be defined as: 

The number of peaks in a multiplet in case of the spin-spin coupling is equal to: 

In a two-dimensional image, obtained using a computer NMR tomography, in which the signal intensity depends on the relaxation time T2: 

A Dipole is: 

The energy of dipole-dipole interactions is: 

Hydrogen bonds are formed between: 

When amphiphilic aggregate in polar media: 

According to the fluid mosaic model biological membranesa re: 

The total energy of a molecule is equal to: 

The refraction index (n) of the light is equal to: 

Which protein is a light sensor in a rod: 

After illumination, photoreceptor cells: 

Which organ in an eye is transducing light to electric signals: 

According to the definition, Nuclear Magnetic Resonance is a process of: 

the chemiosmotic proton gradient that couples the oxidation/reduction processes occuring during the oxidative phosphorylation and the production of ATP created by: 

The cochlea is located: 

The nuclear magnetic resonance for protons occurs: 

During the resonance caused by a RF90 Celcius impulse the longitudinal magnetisation (Mz) of protons: 

The relaxation time T1 can be defined as: 

The magnitude of the chemical shift is: 

In a two-dimensional image, obtained using a computer NMR tomography, in which the signal intensity depends on the releaxation time T1 

The open thermodynamic system is a system which:

The velocity of propagation of the sound wave in an elastic medium is: 

Acoustic pressure is :

Acoustic impedance is defined as: 

The sound wave travels within the medium M1 and enters the medium M2 crossing the interface between these two media. The acoustic impedances for M1 and M2 are 4.5kg*m2s and 1.5kg*m2s, respectively. Indicate the percentage of sound reflected at the interface: 

Radiopharmaceuticals (radiotracers) are NOT used in: 

 The fact that lenses have different focal points for red and violet light is...(called?): 

Find a true sentence describing fluorescence

The number of orientations that moment of proton c.... External magnetic field is: 

To obtain the image of a single slice patient´s body...use: