Answers key with Questions of MDCAT 29 Nov 2020
1 The cell which play an important role in developing of immunity is(Lymphocytes)�2 Antibodies are manufactures in(B lymphocytes)�3 Neurons are cell adopted for rapid transmission of electric impulse, to do this they have long thin process called (Axon)�4 In human heart the left atrium receives (The four Pulmonary veins) � 5 Photophosphorylation take place in (Granum) of the chloroplast.� 6 select the amniotic of the following. Snake,crocodile,parrot (Frog)� 7 In root the apoplast pathway of water is disrupted when water reaches (Endodermis)�8 regarding structure of human heart chordate tendinae are present in(Ventricles
9 the only vein carry oxygenated blood in human(Pulmonary vein)�10 which of blood vessels have highest presseure(Aorta)
11 the complete mature and infection virus particle is known(Virion)
12 which of the following is not true about HIV(It does not cause AIDS)
13 select the method which causes the oxidation of chemical constituents of bacterial cell(Dry heat)
14 which of the following is true about typical structure of bacterial cell…All(Has cell wall,Has cytoplasm,Has genetic material)
15 Red algae do not contributes towards(Making fertilizers)
16 which of the following is true about ammoeba (They move by forming specialized projection called Pseudopodia)
17 The directional movement towards or away from stimuli(Tropism)
18 Transgenic organism ….All(Have foreign gene ,have important role in medicine production,considered benificial for man)
19 which of the following is not necessory for PCR (Ribonucleutides)
20 the end product of glycolysis(Pyruvate)
21 which of the following is not related to enveloped virus(They survive for short time)�22 Numerous opportunistic disease might attack a person suffering from which of the following disease (AIDS)
23 (Evolution) occurs because natural selection gives some alleles better chance for survival.
24 the DNA has been altered and which now contain length of nucleotides from two diff org called (Recombinant DNA)
25 It’s a method of rapid production of a very large number of copies of particular fragments of DNA (P C R)
26 which is the effect of enzymes DNA ligase (They join DNA fragments together)
27 which of the following is tool of recombinant DNA technology….All (Molecular scissors , gene intrest and molecular glue)specialy mol scissors
28 when the temperature of surrounding rises the body responds by (Vasodilation)
29 the excretion of hypertonic urine associated best with the(Loop of henle)
30 In human the temperature regulation control centr(Brain)
31 As excretory organ Liver…All(Detoxification,produce NH3,produce urea and uric acid)�32 The active transport of sodium the ascending limb or thicl loop of henle promoted by (Aldosterone).
33 which of the following muscles are considered as voluntary muscles(Skeletal)
34 which of the following are Myogenic muscles(Cardiac muscles)
35 what do we call the cell surface membrane of a muscle fiber()Sarcolema
36 Which of the following neurotransmitter function both as hormone and neurotransmitter (Endorphins)
37 which of the function is controlled by positive feedback mechanism(Labor contraction)
38 Which of the following is common to all neurons (A cell body which contain a nucleus)
39 A…is junctuion between two neurons called(Synapse)
40 which of the following represents changes in that occurs in the ovary and the uterus approximately 28 days involve ovulation…(Menstural cycle)
41 which of the following disease is sexually transmit(AIDS)
42 Which of the following hormones are involved in to regulate menstural cycle released by pituitary glands(FSH,LH)
43 which trait most likely to effect man than women(X linked recessive)
44 Haemophilia is (X linked recessive)
45 (Co dominance) alleles both have expressed in heterozygous form.
46 when both allele of gene pair are same the org said to be (Homozygous)
47 In which type of cell ,cell wall is not present (Liver call)
48 70S size ribosomes are found in (Bacteria)
49 According to fluid mosaic model the cell memb,which zone is embaded inside (Globular)
50 the membrane separating vacuole from cytoplasm (tonoplast)
51 which one is not function of SER (Processing of glycolipids)
52 organelle which synthesize cell wall (Golgi bodies)
53 which property of water non/polar helps to maintain integrity of plasma membrane (Hydrophobic)
54 Water acts as universal solvent because of (high polarity)�55 Lipids stores double amount of energy as compare to carbohydrates because of (High proportion of C-H bonds)
56 which of the following is un saturated fatty acids (Oleic acid)
57 Monosachrides have genral formula represented by (Cn(H2O)n)
58 NAD is example of Dinucleotide
59 lock and key model for enzymes action proposed by Emil fisher suggest
(Enzymes are restricted to one action type)
60 Most enzymes have an optimum temperature (40 c)
61 Enzymes works by (Lowering activation energy)
62 First stable compound during calvin cycle(3-phosphoglycerate)
63 Function of ribulose (Intermediate in photosynthesis)
64 which of the following process do not need pyruvate as substrate(Calvin cyc)
65 copper containing protein (Cytochrome c)
66 In electron T C ATP synthesis take place when electrons move from (Cytochromes to plastocynin)
67 Law of independent assortment states ( each pair alleles states independently of other pair of alleles during gamets formation.
68 Phenotypes is (The form of appearance of trait)
69 In complete dominance (when on allele is completely expressed and supressed its partner)
70 which of the following is found in both mRNA and DNA (Ribose sugar)
71 the cell in out the body are genetically identical (Reproductive cell)
72 At what phase of DNA contents double ( INTerphase)
73 the organ which are similar in function and diff in str are known as (Analogous organs)
74 Transcription of DNA (It produce mRNA)
75 the particular array of chromosomes that an individual posses (karyotype)
Answered by Muhammad Farooq Achakzai
M phil zoology from UOB
Msc zoology from BZU
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