Sindh MDCAT 2025 Past Paper

61- If fertilization does not occur, which part of uterus degenerate?

A. Myometrium
B. Endometrium
C. Perimetrium
D. Cervix

Answer : B. Endometrium

62- Which process uses mRNA to make protein at ribosomes?

A. Replication
B. Transcription
C. Translation
D. Cell fractionation

Answer : C. Translation

63- Which of the following is the sexually transmitted disease?

A. Syphilis
B. Lung Cancer 
C. Tuberculosis
D. Autoimmune disorders

Answer : A. Syphilis

64- The Golgi apparatus is structurally made of a series of flattened membrane bounded sacs:

A. Grana
B. Cristae
C. Cisternae
D. Vesicles

Answer : C. Cisternae

65- Which type of change is a nerve impulse?

A. Electrical and mechanical change 
B. Chemical and mechanical change 
C. Electrical and chemical change
D. Chemical change only

Answer : C. Electrical and chemical change

66- Which of the following fluid flows through the lymphatic vessels?

A. Plasma
B. Lymph
C. Bile
D. Serum

Answer : B. Lymph

67- Which one of the following is the most common nitrogenous waste excreted in urine of a healthy human?

A. Ammonia
B. Urea
C. Uric Acid 
D. Creatinine

Answer : B. Urea

68- Hippocampus mainly involved in:

A. Vision and hearing reflexes 
B. Voluntary muscles movement 
C. Memory storage
D. Speech production

Answer : C. Memory storage

69- The covalently bonded non protein part of enzyme is called:

A. Activator
B. Prosthetic group
C. Coenzyme
D. Apoenzyme

Answer : B. Prosthetic group

70- The outer surface of the axon membrane in a resting neuron is:

A. Negative due to sodium ions 
B. Positive due to sodium ions
C. Positive due to potassium ions 
D. Neutral due to balanced ions

Answer : B. Positive due to sodium ions

71- Which class of animals excrete ammonia as their primary nitrogenous waste?

A. Unicotelic
B. Urotelic
C. Ammonotelic
D. Ureotelic

Answer : C. Ammonotelic

72- Which of the following best describes the direction of impulse traveling in a typical neuron?

A. Axon …… dendrite …… cell body 
B. Dendrite ….. cell body …… axon
C. Synapse ….. axon …… dendrite 
D. Cell body ….. dendrite …… axon

Answer : B. Dendrite ..... cell body ...... axon

73- Homopolysaccharide that is found in the cell wall of fungi and in the exoskeleton of arthropods is:

A. Cellulose
B. Glycogen
C. Starch
D. Chitin

Answer : D. Chitin

74- The most abundant lipids in living things are:

A. Terpenes
B. Waxes
C. Steroids
D. Acylglycerols

Answer : D. Acylglycerols

75- Name the type of bond that join amino acids to form a polypeptide chain:

A. Hydrogen bond 
B. Ionic bond 
C. Glycosidic bond 
D. Peptide bond

Answer : D. Peptide bond

76- Which of the following is not a globular protein?

A. Enzyme
B. Hormone
C. Channel protein 
D. Collagen

Answer : D. Collagen

77- Which specialized cells of liver perform phagocytic function?

A. Kupffer cells
B. Schwann cells 
C. Parietal cells 
D. Chief cells

Answer : A. Kupffer cells

78- According to Darwin, the main force behind evolution is:

A. Migration
B. Genetic mutation 
C. Artificial selection 
D. Natural selection

Answer : D. Natural selection

79- Beside fertilization, the function of fallopian tube is:

A. Nourishment of embryo 
B. Transport of ovum towards uterus
C. Secretion of female hormones
D. Implantation of zygote

Answer : B. Transport of ovum towards uterus

80- Which property of water allows it to stick to polar surface like wood?

A. Density
B. Adhesion
C. Cohesion
D. Non-polar attraction

Answer : B. Adhesion

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