Test
2020 cycle 1 final corrective
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Preguntas del test (29)
1Which of following statements properly describe characteristics of facilitated diffusion?
- AIn facilitated diffusion, membrane carriers enable movement of molecules through the cellular membrane against concentration gradient
- BParticular membrane carrier is able to transfer one particular type of molecules soluble in water
- CFacilitated diffusion characterizes with finite rate of transfer of substance defined as maximum saturation
- DWater molecules pass from the cell of the collecting duct to its lumen through the system of facilitated diffusion called AQP2
2Which of the following statements properly describe agglutination:
- AAdministration of aspirin slows the process of agglutination
- BAgglutination is in vitro phenomenon resulting from an interaction between the agglutinogen and agglutinin
- CGamma globulins of IgM class easily agglutinate erythrocytes in room temperature
- DAgglutination is slowed by albumin molecules
33. Which of following statement concerning active transport are true?
- ANa/K ATP-ase exchanges 2 sodium ions for 1 potassium ion. Each such exchange requires two ATP molecules
- BCo-transportation of glucose and sodium ions requires previous action of Na/K ATP-ase. Such the mechanism is an example of secondary active transport
- CCalcium ions are actively pumped into cellular cytosol by the calcium ATP-ase. This mechanism maintains higher concentration of calcium in cellular cytosol than in ECF
- DActive transport mechanisms are able to move substances against concentration gradient
44. Which of following statements properly describes beta-adrenergic receptors?
- AB-adrenergic receptor is a ligand-gated channels
- BActively of some adrenergic receptors brings EPSP to the postsynaptic membranes
- CBeta-adrenergic receptors initiate transduction resulting with activation of adenylate cyclase
- DActivation of beta-adrenergic receptors up-regulates synthesis of cAMP
5Which of following statements concerning thromboxane A2 (TxA2) are true?
- AIt activates fibrinolysis
- BTxA2 activates platelets- it intensifies their degranulation (release of the content of granules).
- CIt prevents aggregation of platelets
- DIt mediates vascular contraction
6 Which of following statements properly concern eosinophils?
- AThey migrate in large number into tissues infected by parasites where they release hydrolytic enzymes
- BThey release heparin, histamine as well as small quantities of bradykinin and serotonin
- CThey belong to the adaptive immune system. They are not able to phagocyte
- DThey aggregate in tissues where allergic reactions occur, (peribronchial tissue in people with asthma).
- EThey exhibit chemotaxis
7Which of following statements concern G-protein coupled receptors?
- AG-protein coupled receptors hydrolyses GTP, transferred from G-protein to the binding site of the receptor
- BMuscarinic receptor is an example of G-protein coupled receptor
- CAll adrenergic receptors belong to family of G-protein coupled receptors
- DG-protein coupled receptors are metabotropic, they initiate formation of second messengers: cAMP or IP3
8Actions of Heparin are:
- Ait inhibits activity of plasma coagulation factors I and IV.
- Bit activates natural anticoagulant protein of plasma- antithrombin III
- Cit inhibits activity of activated Stuart factor and thrombin (factors X and II)
- DIt intensifies adhesion and degranulation of platelets
- EIt intensifies proteolytic degradation of plasminogen
9Which of following receptors are ionotropic receptor for cations?
- AIP3 receptor
- BRyanodine receptor
- CGlycine receptors
- DGABAA receptor
- ENicotinic receptor
1010. Put following cations of the extracellular fluid ECF in proper order;
Being from the most concentrated;
Select one;- AMagnesium-sodium-calcium
- BPotassium-sodium-calcium-magnesium
- CPotassium-calcium-magnesium-sodium
- DSodium- potassium-calcium-magnesium
- ESodium -calcium- potassium- magnesium
11Which of following sentences are true?
- Aimmunoglobulins against antigen D of Rhesus system develop in childhood
- BImmediately after birth the quantify of agglutins in the plasma of the newborn is almost zero
- CImmunoglobulins against ABO blood type is produced by the fetus before their birth
- DAgglutinins in ABO system are produced in effect of immunization against antigens A and B commonly present in environment
12Muraminidase: = Lysozyme
- Ait is a part of innate immune response
- BIt activates complement cascade
- CIt is an enzyme that performs bacterial lysis
- DIt is present in plasmocytes
13Find right sentences concerning transportation of CO2 in blood;
- A5-7% of all the CO2 is transported physically dissolved in blood
- B50% of C02 is converted to bicarbonate. Process is catalyzed angiotensin converting enzyme.
- CAll the bicarbonate produced in erythrocytes and exchanged for chloride. It is called Hamburger’s phenomenon.
- DPart of CO2 is reversibly bound to hemoglobin, forming carboxyhemoglobin
14In Rhesus system of blood;
- AD antigen the oligosaccharide bound to the cellular membrane
- BD antigen is the most immunogenic (the strongest component of the system
- CAll antigens of the Rhesus system are proteins located only on membranes of erythrocytes
- DAgglutinins are synthesized in RhD-negative individuals after exposure to RhD- positive blood
15Which of following events DO NOT match the signal transduction of G protein coupled receptor.
- AAutophosphorylation of tyrosine residues of B-subunit of the receptor B-subunit phosphorylates other proteins
- BBinding of the ligand to its native receptor, receptor activates
- CReceptor interacts with G protein to promote a conformational change and the exchange of GDP to GTP
- DSubunits of G protein interact with their appropriate enzymes, activating various second messenger pathways and other effector proteins
1616. Which of following results of blood tests may suggest improperly low activity/ concentration of thrombin?
- Aprolonged time of the clotting time test
- Bprolonged prothrombin time
- Cprolonged time of bleeding time test
- Dprolonged time of Rumpel-Leede test
17Oxytocin
- Ait produces contraction of cells of the deferent duct
- Bit upregulates synthesis IP3 in smooth muscle cells of the uterus
- CIt is responsible for milk ejection due to contraction of myoepithelial cells
- DIt has galactopoietic activity- it stimulates production of milk
18Action of glucocorticoids (cortisol) are;
- Arise of liberation of histamine from mast cells
- Brise of gluconeogenesis
- Crise of plasma concentration free fatty acids
- Dintensification of catecholamine dependant bronchodilation
19Which of following statements concerning coagulation are proper:
- AThrombin dependent factors are factors I, II, X and XII
- BThrombin is a proteolytic enzyme catalyzing conversion of fibrinogen into fibrin.
- CVitamin K is necessary in process of post-translatory modification of prothrombin in liver.
- DExposition of thrombin to fibrin degradation products accelerate coagulation
20Hemoglobin-oxygen dissociation curve shifts to the left due to: left = increased affinity
- ADecline of the temperature.
- BRise of 2,3 BPG.
- CImpulses from carotid bodies.
- DRise of pH.
- EHypercapnia (rise of pCO2)
21 Actions of heparin are:
- AIt inhibits activity of plasma coagulation factors I and IV.
- BIt activates natural anticoagulant protein of plasma – antithrombin III.
- CIt inhibits activity of activated Stuart factor and thrombin (factors X and II).
- DIt intensifies adhesion and degranulation of platelets.
- EIt intensifies proteolytic degradation of plasminogen.
22 Find true statements concerning vasopressin:
- AIt increase water reabsorption from the collecting duct via AQP2 up-regulated after hormone binds to VP1 receptor
- BIn smooth musculature of vessels, it up-regulates synthesis of IP3 in smooth muscle cells, eliciting contraction.
- CIt’s plasma level rises in effect of decreasing osmotic pressure of blood and cerebrospinal fluid.
- DDecompression of baroreceptors of the carotid sinus and aortic arch increases liberation of that hormone.
- EIt inhibits complex of thirst.
23Which of following sentences are true?
- A5-7 % of all the CO2 is transported physically dissolved in blood.
- B40 % of CO2 is converted to bicarbonate. Process is catalyzed carbonic anhydrase
- CPart of CO2 is reversibly bound to hemoglobin, such a molecule is called carbaminohemoglobin.-
- DAll the bicarbonate produced in erythrocytes is exchanged for phosphate. It’s called Hamburger’s phenomenon
24Which of following statements properly describe characteristics of facilitated diffusion?
- Ain facilitated diffusion, membrane carriers enable movement of molecules through the cellular membrane against concentration gradient
- BParticular membrane carrier is able to transfer one particular type of molecules soluble in water.
- CFacilitated diffusion characterizes with finite rate of transfer of substance defined as maximum saturation.
- DWater molecules pass from the cell of the collecting duct to its lumen through the system of facilitated diffusion called AQP2
25Lactoferrin:
- AIt is a part of innate immune response.
- BIt activates complement cascade.
- CIt is an enzyme of saliva binding iron necessary for proliferation of microbs.
- DIt is an enzyme of saliva reducing Fe2+ toFe3+.
26Which of following receptors are intracellular ionotropic receptor for cations?
- AP3 receptor.
- BRyanodine receptor.
- CGlycine receptors.
- DGABAA receptor
- ENicotinic receptors.
27Action of glucocorticoids (cortisol) are:
- AIt up-regulates liberation of histamine from mast cells.
- BIt intensifies gluconeogenesis in liver.
- CIt down-regulates number of lymphocytes and eosinophils.
- DIt intensifies catecholamine-dependent bronchoconstriction
- EIt increases GFR
28Which of following statements properly describes beta-adrenergic (β-adrenergic) receptors?
- Aβ-adrenergic receptor is a ligand-gated channels.
- BActivity of some adrenergic receptors brings fEPSP to the postsynaptic membranes.
- CBeta-adrenergic receptors initiate transduction resulting with activation of adenylate cyclase.
- DActivation of beta -adrenergic receptors up-regulates synthesis of cAMP.
29Put following cations of the extracellular fluid (ECF) in proper order. Begin from the least concentrated:
- ASodium-potassium-calcium- magnesium
- BSodium- calcium - potassium - magnesium
- CPotassium-sodium-calcium- magnesium
- DMagnesium-calcium-potassium-sodium
Información
- Descripción
- cycle 1 Physiology Test sobre 2020 cycle 1 final corrective, creado por Elisabeth Haasen el 10/11/2021.
- Autor
- Elisabeth Haasen
- Idioma
- English
- Visitas
- 327
- Historial
- Creado el 10 nov 2021 · actualizado el 11 jun 2022
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