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Home » Medical Papers » UHS MDCAT » Aptitude Test - 54
1.Conduction of action potentials from one mode of Ranvier to another in myelinated neurons is through:
A. Hyperpolarization
B. Resting Membrane Potential
C. Depolarization
D. Hyperpolarization
2.In human testis, which structure is responsible for carrying sperm from inside the testis?
A. Seminiferous tubules
B. Urinogenital duct
C. Seminal Vesicles
D. Seminiferous tubules
3.In which part of female reproductive system fertilization takes place?
A. Proximal part of oviduct
B. Uterus
C. Placenta
D. Proximal part of oviduct
4.In females, FSH stimulates the ovary to produce
A. Progesterone
B. Lactin
C. Oestrogen
D. Progesterone
5.Syphilis, sexually transmitted disease is caused by:
A. HIV
B. Treponema pallidum
C. Neisseria gonorhoeae
D. HIV
6.In which phase of human female menstrual cycle, endometrium prepares for the implantation of embryo?
A. Proliferative phase
B. Menstrual phase
C. Secretory phase
D. Proliferative phase
7.The total number of cervical and thoracic vertebrate in human vertebral column is:
A. 7
B. 19
C. 14
D. 7
8.A sarcomere is the region of a myofibril between two successive:
A. M-lines
B. Z-lines
C. I-bands
D. M-lines
9.The sarcolemma of muscle fibre folds inwards and forms a system of tubes which runs through the sarcoplasm called:
A. Myofilaments
B. Sarcoplasmic reticulum
C. Z-lines
D. Myofilaments
10.According to sliding filament theory, when muscle fibers are stimulated by nervous system, which of the following changes occurs?
A. I-bands shorten
B. H-zone becomes more visible
C. Z-lines move further apart
D. I-bands shorten
11.If lactic acid build up in thigh muscles, it causes muscle tiredness and pain. This condition is called:
A. Muscle Fatigue
B. Tetany
C. Cramps
D. Muscle Fatigue
12.Thyroxine deficiency in adults’ results in a condition called:
A. Cretinism
B. Hypothyroidism
C. Thyrotoximia
D. Cretinism
13.α-cells of pancreas secrete a hormone known as:
A. Glucagon
B. Insulin
C. Gastrin
D. Glucagon
14.X-linked recessive trait is:
A. Hypophosphatemia
B. Vitamin-D resistant rickets
C. Haemophilia
D. Hypophosphatemia
15.Human skin colour is a good example of?
A. Sex-linked inheritance
B. Polygenic inheritance
C. x-linked inheritance
D. Sex-linked inheritance
16.From evolutionary point of view, which respiratory protein is common in many organisms?
A. Cytochrome a
B. Cytochrome b
C. Cytochrome c
D. Cytochrome a
17.Number of pairs of autosomes in humans in:
A. 23
B. 24
C. 21
D. 23
18.ABO blood system is an example of:
A. Polygenes
B. Multiple genes
C. Multiple Alleles
D. Polygenes
19.Which molecular structure of enzyme is essential for activity of enzyme?
A. Primary Structure
B. Quaternary Structure
C. Secondary Structure
D. Primary Structure
20.Which one of the following edible products is widely pasteurized?
A. Soft drinks.
B. Mango squash
C. Milk
D. Soft drinks.
21.Ribosomes are tiny organisms, which are involved in the synthesis of:
A. Protein
B. RNA
C. Nucleus
D. Protein
22.Which organelle is bounded by two membranes?
A. Ribosome
B. Mitochondria
C. Lysosome
D. Ribosome
23.At the beginning of nuclear division, the number of microtubule triplets in two pairs of centrioles that migrate to opposite poles are:
A. 9
B. 18
C. 108
D. 9
24.The disease in which an individual has extra sex chromosome (44 + XXY) is known as:
A. Down’s syndrome
B. Tuner’s syndrome
C. Klinefelter’s syndrome
D. Down’s syndrome
25.Jacob’s syndrome
A. Cushing’s Disease
B. Diabetes Mellitus
C. Hypoglycemia
D. Cushing’s Disease
26.Ejection of milk from mammary glands is under the control of which one of the following hormones?
A. Androgen
B. Oxytocin
C. Progesterone
D. Androgen
27.Granulocytes are:
A. Monocytes, Eosinophils, Basophils
B. Monocytes, Eosinophils, Basophils
C. Neurophils, Eosinophils, Basophils
D. Monocytes, Eosinophils, Basophils
28.Response of body against the transplanted organ is:
A. Homeostatic Response
B. Behavioral Response
C. Primary Response
D. Homeostatic Response
29.Some enzymes require helper which is non-protein part for its efficient functioning that is called:
A. Accelerator
B. Cofactor
C. Prosthetic group
D. Accelerator
30.Pepsin, protein digesting enzymes, sets best pH:
A. 3.00
B. 4.50
C. 2.00
D. 3.00
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