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Quiz 227
Mdcat-past-papers Quiz
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4521. What is the chemical composition of chromosomes?
RNA and lipids
DNA and proteins
Carbohydrates and nucleic acids
Proteins and carbohydrates
4522. Which of the following surrounds myofibril in skeletal muscle that stores and distributes calcium ions during muscle functioning?
Sarcodermna
Sarcoplasmic reticulum
Transverse tubules
Sarcoplasm
4523. Shivering thermogenesis involves:
Voluntary muscle contraction
Involuntary muscle contraction
Dehydration
Hormone secretion
4524. Guanine - cytosine pairs enhance DNA stability due to:
Larger size
Closer pairing
More hydrogen bonds
Double ring structure in both
4525. Which of the following neurons conduct impulses from sensory receptors to CNS:
Sensory neurons
Motor neurons
Efferent neurons
Interneurons
4526. Why Lamarek is being remembered till today?
Due to his rejected but appealing theory of heredity
Due to his universally acceptable theory of evolution
Due to his accepted theory of heredity
Due to his theory of evolution by natural selection
4527. Which of the following is NOT related to DNA?
Adenine
Thymine
Uracil
Guanine
4528. If a male with hemophilia marries a non-carrier female, what is the likelihood of their sons inheriting the condition?
50%
100%
0%
25%
4529. Which of the following is a characteristic of a non-competitive enzyme inhibitor?
Binds to the enzyme active site
Can be overcome by increasing substrate concentration
Increases the speed of the reaction
Point of action is allosteric site
4530. Which of the following event prevent backflow of blood from ventricles to atria during ventricular systole?
Contraction of the atrial wall muscles
Closure of tricuspid and bicuspid valves
Opening of semilunar valve
Opening of tricuspid and bicuspid valves
4531. In the following process the cells release energy from oxidation of food molecules?
Cellular respiration
Photosynthesis
DNA replication
Protein synthesis
4532. How many NADH are produced, when one Acetyl co-A is oxidized during Krebs's cycle?
1
2
3
6
4533. Which of the following best describes glycoproteins?
Proteins linked with carbohydrates
Proteins linked with DNA
Proteins linked with lipids
Proteins linked with minerals
4534. The function which is common between Cerebellum and Hippocampus is;
Equilibrium
Memory formation
Body positioning
Sexual arousal
4535. In males, which of the following is considered a urogenital organ?
Urethra
Ureter
Urinary bladder
Vas deferens
4536. The most common type of arthritis is:
Gout
Rheumatoid arthritis
Osteoarthritis
Spondylitis
4537. The other name for Interstitial cells in male testes is:
Laying cell
Spermatogonia cell
Sertoli cell
Spermatocyte
4538. Binding of hemoglobin with oxygen is catalyzed by the enzyme:
Carbonic anhydrase
Carboxylase
Oxygenase
Dehydrogenase
4539. Transfer of phosphate from one compound to the other compound requires an enzyme called:
Oxidoreductase
Transferase
Hydrolase
Ligase
4540. Linkage of genes in Drosophila was first discovered by:
Thomas Hunt Morgan
Alfred Sturtevant
Gregor Mendel
Hugo de Vries
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