Biophysics

134)  the difference between uni- and bipolar ECG recording is that

135)  Chose proper pair (A and B) to fill the following sentence: Chemiosmo coupling is achieved through the structure of A-integral protein of the membrane

136)  Chose proper pairs of certain e-m waves and types of excitations indu… them

140) The phenomenon of magnetic resonance is related to the   induced transitions:

143)  dynamic resistance (vascular) at a flow of fluid through the vessel of radius R:

146) The equilibrium osmotic adjustment occurs on both sides of a semipermeable membrane:

147)  Presentation of TM:

148) Magnus-Effect

149)  The law of radioactive decay is given by:

150) An example of coupling two transport processes, running on a cotransport (passive process) through a biological membrane is:

152)   µ radiation:

153)  Dispersion interactions:

155)  The number of possible orientations of the magnetic moment in the magnet

156)  Diffusion of substances in solution when empty drives the gradient:

157)  In the field of induction B = 1 T is the frequency needed to Magnetic resonance occurred is:

161)  So called heart electrical vector:

 164)  When we see a sharp image of an object located at its minimal distance from our eyes (i.e. minimal distance to see sharp image)

175) Indicate how the energy of interaction between two point charges depends on the distance (r) between these charges

177)  A hydrogen bond is formed between the OH group and an Oxygen atom from water. Choose true statement:

184)  Indicate in which case the action potential is not propagated with a constant amplitude a

186)  If the cellular membrane becomes permeable solely to sodium ions then the membrane potential of such cell would become close to (assume the physiological intra- and extracellular concentrations of ions):

189)  Indicate the necessary condition for creation of positon-negaton pair

191)  In Roentgen lamp supplied by a voltage U,

193)  When a linear beam of gamma rays enters a homogeneous material,

198)  Indicate the effect of the inward (from outside towards inside the cell) current of anions flowing through the cytoplasmic membrane

199)  What happens to the membrane capacitance of a cell if both its surface area and thickness increase two fold (two times)?

200)  Indicate the consequence of a decrease in the value of the partition coefficient ß (membrane-liquid partitioning) for the substance transported through the membrane. Assume that the concentrations of the transported substances on both sides of the membrane remain unequal and do not change during the experimental observation

201)  When the value of local electrical field intensity in the electrolyte decreases to 50% of its original value, the Ohm’s law for electrolytes predicts that the current density

202)  The cell membrane (non-excitable cell) is stimulated with the current I… Assuming that Cm is the membrane capacitance and Rm is the input resistance indicate the maximum change in the membrane voltage evoked by this stimulus

203)  When the input resistance of an excitable cell is decreasing

204)  If the input resistance of a cell membrane is 100MOhm (megaOhms) and its capacitance is 100 pF (picoFarads), the time constant of the membrane is

208) The unipolar electrode is placed immediately above the excitable tissue in which the action potential propagates as indicated by the arrow and distribution of charges. Depolarization induced by the action potential propagates toward the electrode and eventually comprises the entire tissue. Indicate the value of recorded potential when the frontline of excitation is immediately below the electrode

213)  When a viscous fluid Is transported through a cylindrical vessel of constant diameter and under a constant pressure the fluid velocity

220) Sound velocity:

224) When channels open in the cilia of hair cells in the organ of Corti the flux of ions can be characterized as:

238) Indicate the effect of hydrogen bonding on phase transition in water

250) Which mode(s) of ultrasonography provides a direct information about the amplitude of echoes

251) After the light absorption by a photoreceptor the membrane potential is:

252)The force of electrostatic interaction between two electric charges is:

258) In ultrasonography reflections of ultrasound waves (echos) may occur at the boundary between two tissues: