Mock Test

Exam: RRB Group D Subject: General Science Topic: Biology

Total Questions: 20

Q1. Which of the following gastric cells secretes hydrochloric acid (HCl)?

Chief cells Goblet cells Parietal cells Enteroendocrine cells
Q2. What is the refractory period in a neuron?

The time it takes for a neurotransmitter to bind to a receptor The period of time after an action potential during which the neuron cannot fire again The process of reuptake of neurotransmitters The time it takes for the axon to repolarize
Q3. Which of the following is the primary reservoir of carbon in the Earth's biosphere?

Atmosphere Oceans Fossil Fuels Living Organisms
Q4. The central nervous system consists of:

Brain and spinal cord Brain and cranial nerves Spinal cord and peripheral nerves Cranial nerves and spinal nerves
Q5. The primary function of the alveoli in the lungs is:

Transporting oxygen to the heart Exchanging gases (oxygen and carbon dioxide) Filtering air Producing mucus
Q6. Photoinhibition, a reduction in photosynthetic efficiency caused by high light intensity, is often associated with:

Increased production of reactive oxygen species (ROS) and damage to PSII. Enhanced synthesis of ATP and NADPH. Increased efficiency of RuBisCO. Reduced consumption of CO2.
Q7. Adult stem cells are also known as:

Pluripotent stem cells Multipotent stem cells Omnipotent stem cells Totipotent stem cells
Q8. Which endocrine gland secretes hormones that regulate metabolism, growth, and development, and is located in the neck, anterior to the trachea?

Parathyroid gland Adrenal gland Thyroid gland Pancreas
Q9. Cloning can be used to preserve genetic material from:

Extinct species Endangered species Rare plant varieties All of the above
Q10. The scientific name of a domestic cat is Felis catus. 'catus' is the:

Genus Species Family Kingdom
Q11. During muscle fatigue, which factor is often implicated as contributing to the decline in muscle force production?

Increased ATP availability Depletion of acetylcholine Accumulation of metabolic byproducts (e.g., lactate) Excessive calcium influx
Q12. A behavior that benefits the actor and the recipient is called:

Altruism Spite Mutualism Selfishness
Q13. In incomplete dominance, the heterozygous phenotype is:

Identical to the dominant phenotype Identical to the recessive phenotype An intermediate between the two parental phenotypes Absent
Q14. What is the involuntary muscular contraction that moves food through the digestive tract?

Mastication Segmentation Peristalsis Absorption
Q15. Which of the following is a substance that can be excreted in sweat but is NOT a primary component of urine?

Urea Excess salts Ammonia Water
Q16. The process by which phagocytes are attracted to a site of infection is called:

Opsonization Diapedesis Chemotaxis Phagocytosis
Q17. The generation of monoclonal antibodies using genetic engineering primarily involves:

Introducing genes for antibody production into bacterial cells. Hybridoma technology, where antibody-producing cells are fused with myeloma cells. Directly modifying antibody genes in humans. Using viral vectors to deliver antibody genes to immune cells.
Q18. The hepatic portal vein transports nutrient-rich blood directly from which organ to the liver, bypassing the systemic circulation?

Stomach Spleen Intestines Gallbladder
Q19. What is recombinant DNA technology?

The process of isolating DNA from a cell The manipulation of genes from different organisms The synthesis of new DNA molecules The study of genetic mutations
Q20. Graves' disease is an autoimmune disorder that affects which endocrine gland?

Adrenal gland Pituitary gland Thyroid gland Pancreas

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