ZOO502 Midterm Past Papers by Dining Discussion

DINNING

OBJECTIVES

1. Walter Cannon coined the term homeostasis in ------------- 1929 2. The amount of solute that passes through a unit area of membrane every … in one direction is called membrane flux. -------------- Second 3. Delayed rectifiers are … channels. -----------Voltage-Gated K+ 4. Voltage-gated Na+ channels are: ----------- Fast Acting Channels 5. Diffusion is a…transport & occurs -the expense of energy.----- Passive, Without 6. Which one of the following is not correct about ion channel proteins? ------ Have Hydrophilic Passageways That Facilitate Quick Flow Of Water Molecules & Ions In Dissolved Fluid 7. Which of the following is a correct statement? -------- Symporters Are Coupled

Transporters That Transfer Two Solutes In The Same Direction

8. Clotting of blood in response to an injury is an example of --Positive Feedback System 9. -- are also known as “delayed rectifiers” -- Voltage-Gated Potassium Channels

10. Release of oxytocin during labor is an example of ---- Positive Feedback System
11. … of digestive tract is specialized for grinding & mixing. ------- Smooth Muscles
12. Concentration of potassium is… times higher inside the cell than outside.- 10-20
13. In … feedback systems the end product works to stop or slow down the process.----Negative
14. -- is the tendency of an organism to maintain relative internal stability---- Homeostasis
15. Adaptation is: All Generally, Not Reversible , Ensures Survival Of The Species , A Slowly Occurring Evolutionary Process
16. Antidiuretic hormone can increase water permeability of renal collecting duct in mammals up to … times. ---------- 10
17. Facilitated diffusion is the … diffusion through the membrane down the concentration gradient … the proteins. --------- Passive, With
18. Control of blood glucose by insulin is an example of: -- Negative Feedback System
19. Donnan Equilibrium phenomenon was discovered by Frederick Donnan in: ----- 1911
20. A slowly occurring evolutionary process which is not reversible is called:---

Adaptation

DINNING

21. Non diffusible … produce Donnan effect i.e. unequal distribution of ions across the membrane. ----- Anions
22. A depolarization in the range of … is the threshold that triggers AP. -55 Mv To -33mv
23. Which is not the feature of voltage-gated calcium channels?------- These Are

Delayed Rectifiers

24. Which of the following statement is true about action potential? ------

Repolarization Due To Outflow Of K+

25. An adaptive change with in an animal due to chronic exposure to new naturally occurring conditions is: ---------- Acclimatizatio
26. Membrane potential varies b/w:----------- -30 To -100mv
27. Diameter of membrane channels is less than: ------------ 1.0nm
28. ------Action potential is inflow of ----------- Na+ Depolarization
29. Equation indicate blood flow: ----------- V = Q/A
30. Which of the following statement is true about action potential--------- Repolarization Due To Outflow Of K+.
31. Which law is not applicable to animal physiology? -------- Acceleration Law
32. Action potential is inflow of ------------- Na+ Depolarization
33. Which of the following statement is correct about action potential ___ Inflow Of

Sodium Ion (Depolarization) 34 – 35

34. Non diffusible_______ produce Donnan effect ------------- Solute
35. Channels are involved in producing action potential-- Na+ And K+
36. A slowly occuring evolutionary process ----- Adaptation
37. Changes are induced experimentally in the laboratory ----- Acclimation
38. Donnan equilibrium is characterizaed by a reciprocal distribution of the ------- Anions

And Cations

39. Concentration of K+ is ____times higher inside the cell than outside ------ 10-20
40. Electrical transmission has been discovered in________All
41. The receptor molecules are typically ------------------Proteins.
42. Cold Receptors are ----- times more common in skin than heat receptors.---3.5
43. Which of the following incorrect statement ------. Receptors Of Sour Tastes Are

G Protein-Coupled Receptors

DINNING

44. In Equation 𝜼 Stand For ---------- Viscosity Of Blood Vessel
45. ---is a protein that contains 191 amino acids in a single chain.---.Growth Hormone
46. Achromatic vision which is produced of . -------------Rods.
47. Rhythmic discharge rate of A-V node : -----------40 To 60 Times Per Minute.
48. Each molecule of this protein can bind around -------Ca2+.--------50
49. Myocyte are ------------muscle.---------Cardiac
50. Thick Filaments composed of about --------myosin molecules.------300
51. Mineralocorticoids include ----------Corticosteroids.
52. Disease is Not a Pharmacological applications ……Anemia
53. Increases blood Ca2+ levels; decreases blood phosphate level…Parathormone (Pth)
54. Inhibits release of growth hormone ……Somatostatin
55. ACTH is play role in the -----------------Circadian Rhythms.
56. Which is not a part of cell body?------------ Myelin Sheath
57. Oxytocin stimulates in -------------Birds.
58. target cell usually has some -------- Receptors. ---- 2000 To 100,000
59. Myocytes are muscles……. Cardiac.
60. Synaptic cleft is ---------- Wide 20nm
61. Troponin has a high binding affinity for -------Ca2+
62. The delta cells, about --------- of the total----------10 Per Cent ,
63. The visible spectrum for human eyes lies between the wavelengths of--- 400-740 Nm.
64. Voltage is measured in ……..Milivolt.
65. Changed induced in lab …….Acclima
66. Intestine is target tissue of………PTH
67. Neurohypophysis is ……..Posterior Lobe
68. Giant axons of arthropds molluscus…….30m/Sec
69. Speed of propagation of action potentials in molluscs is------- 30m/S
70. Which of the following is incorrect statement?------- Receptors Of Sour Tastes

Are G Protein-Coupled Receptors

71. … is a disease not a pharmacological application.--------- Anemia
72. Which of the following is not fast inhibitory transmitter?-----Acetylcholine
73. Acetylcholine is released in:--------- Synaptic Cleft