Welcome to biology afns test 7, curated specifically for candidates preparing for the Armed Forces Nursing Services (AFNS) initial entrance exam. This practice module focuses on key concepts and recurring test questions from the FSc Biology syllabus.
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#1. Which of the following is responsible for saltatory conduction in myelinated neurons?
#2. The sympathetic and parasympathetic nervous systems are subdivisions of the:
#3. Which one of the following best describes the waxy-appearing material called myelin?
#4. The distance for the neurotransmitters to reach the target cells is less than a:
#5. Meissner’s corpuscles:
#6. The part of a neuron that conducts impulses away from its cell body is called a(n):
#7. The substance released at axon terminals to propagate a nervous impulse is called a(n):
#8. Where does fertilization of the egg by the sperm typically occur?
#9. What is the function of the epididymis?
#10. Spermatogenesis takes place in the:
#11. The timing of puberty can be influenced by which of the following?
#12. The periodic shedding of the endometrium is known as:
#13. Which of the following glands are responsible for 60-70% of the synthesis of semen?
#14. The primary function of the uterus is to:
#15. Spermatogenesis:
#16. __________ cavities are spaces within joints:
#17. The cell responsible for secreting the matrix of bone is the:
#18. Vertebrae are considered __________ bones:
#19. In the classification of joints, which of the following is true?
#20. Pancreas is under the control of
#21. The correct sequence of nerve impulse in muscle is:
#22. Calcium ions bind to the __________ molecule in skeletal muscle cells:
#23. Myoglobin:
#24. Creatine phosphate functions in the muscle cell by:
#25. Which statement describes the biological action of the oestrogen/progesterone contraceptive pill?
#26. Melatonin is secreted by:
#27. All of the following effects are produced by adrenaline except:
#28. Glucagon abnormalities are __________ endocrine disorder
#29. Which of the following would be examples of antagonistic hormones?
#30. Which hormone increases osteoclast activity to release more calcium ions into the bloodstream?
#31. Gluconeogenesis occurs in the liver due to the action of:
#32. The following occur during the response to infection:
#33. Natural active immunity is developed by
#34. T-lymphocytes get mature in
#35. A substance containing a harmless form of the germs that cause a particular disease is:
#36. Cell mediated immune response is regulated by
#37. Artificial introduction of the antigens in the body initiate the __________ immunity
#38. Which is an example of natural passive immunity?
#39. The component of the immune response involving the transformation of B-lymphocytes into plasma cells that produce and secrete antibodies to a specific antigen:
#40. In which of the following processes ATP produced.
#41. During inspiration the diaphragm.
#42. Walls of the chest cavity are composed of.
#43. Exchange of gases during organismic respiration is carried out by.
#44. Diffusion of oxygen in and carbon dioxide out occurs when.
#45. During expiration air is given out when.
#46. In the glottis the mucous membrane is stretched across into fibrous bands.
#47. Exchange of O2 and CO2 at the respiratory surface occurs through:
#48. Voice box is also called:
#49. Mechanism of breathing consists on how many phase(s)?
#50. The pigment which stores oxygen in muscles is:
#51. When oxygen tension is 115mm mercury hemoglobin is __________ saturated:
#52. Myoglobin is haemoglobin-like __________ containing protein:
#53. During inspiration, diaphragm:
#54. Opening to the trachea is covered by a small flap of tissues termed as the:
#55. What is another name for the windpipe?
#56. The following structures are found in the walls of the gas exchange system:
#57. Similarity in characteristics resulting from common ancestry is known as.
#58. Oldest known fossils are of.
#59. Armadillo the armored mammals live only in.
#60. Vermiform appendix is a vestigial organ in.
#61. Organs functionally alike but structurally different are.
#62. The parts of the body used extensively to cope with the environment become larger and stronger, while those that are not used deteriorate was argued by:
#63. Natural selection can amplify or diminish only those variations that are:
#64. How many linkage groups man has:
#65. ABO blood system was discovered by:
#66. The universal donor blood group is:
#67. Hypophosphatemic ricket is an X-Linked —- trait:
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BIOLOGY TEST 7
Welcome to biology afns test 7, curated specifically for candidates preparing for the Armed Forces Nursing Services (AFNS) initial entrance exam. This practice module focuses on key concepts and recurring test questions from the FSc Biology syllabus.
Key Topics Covered in Biology AFNS Test 7
To score high in the AFNS initial academic test, make sure to revise these crucial topics tested in this quiz:
- Genetics & Inheritance: Mendelian laws, gene interactions, sex-linked inheritance, and genetic disorders.
- Biotechnology Tools: Gene cloning, PCR techniques, recombinant DNA technology, and transgenic organisms.
- Ecosystem & Energy Flow: Food webs, biogeochemical cycles, ecological pyramids, and environmental conservation.
- Evolution & Origin of Life: Theories of evolution, natural selection principles, and evidence of evolutionary changes.
Effective Revision Tips for Test 7
- Re-check Key Terminology: Review key definitions and laws in genetics and biotechnology from your 2nd-year FSc Biology book.
- Review Missed MCQs: Carefully inspect any wrong options selected after completing the quiz to fix knowledge gaps.
- Practice Time Control: Solve MCQs continuously to build accuracy and time management skills for the actual computer test.
Useful Resources & Next Steps
- Next Quiz: Move forward to practice Biology AFNS Test 8.
- Main Hub: Return to All AFNS Biology Practice Quizzes to access the complete test series.
- Official Information: For official selection criteria and registration dates, visit the Join Pak Army Official Website.
General Biology Quiz 7: Human Nutrition, Digestion & Bioenergetics
Human nutrition and digestion involve the ingestion, mechanical breakdown, enzymatic hydrolysis, and absorption of dietary macromolecules, alongside the elimination of indigestible waste. Adequate nutrient intake provides the necessary chemical energy and raw materials required for growth, cellular repair, and metabolic maintenance. Biology Quiz 7 focuses on nutritional science, digestive tract physiology, and biochemical processing.
🥗 Nutrition Focus: Review macro and micronutrients, enzyme specificity in the gastrointestinal tract, and vitamin absorption mechanisms.
1. Macronutrients and Micronutrients Overview
Dietary components are broadly categorized into macronutrients, which are required in large quantities to supply energy and structural building blocks, and micronutrients, which are essential in trace amounts to regulate biochemical reactions.
- Carbohydrates: Primary source of rapid cellular energy, broken down into monosaccharides like glucose.
- Proteins: Composed of amino acids, crucial for tissue synthesis, enzymatic catalysis, and structural integrity.
- Lipids (Fats): High-energy compounds serving as long-term energy reserves, thermal insulation, and cell membrane constituents.
- Vitamins and Minerals: Organic and inorganic cofactors supporting metabolic enzyme functionality and fluid balance.
2. Anatomy of the Human Alimentary Canal
The human digestive system consists of a continuous muscular tube extending from the oral cavity to the anus, supplemented by major digestive glands.
| Organ / Region | Primary Digestive Function |
|---|---|
| Oral Cavity | Mastication of food and enzymatic breakdown of starches via salivary amylase. |
| Stomach | Acidic environment utilizing hydrochloric acid and pepsin to initiate protein digestion. |
| Small Intestine | Primary site of enzymatic digestion and nutrient absorption via mucosal villi. |
| Liver & Pancreas | Liver produces bile for lipid emulsification; pancreas secretes key digestive enzymes. |
3. Enzymatic Hydrolysis in the Small Intestine
The duodenum receives secretions from the pancreas and gall bladder to neutralize acidic chyme and finalize chemical breakdown. Pancreatic juice contains trypsin for proteins, pancreatic lipase for lipids, and pancreatic amylase for carbohydrates. Intestinal brush-border enzymes complete the conversion into absorbable monomers.
4. Absorption, Assimilation, and Egestion
Once broken down, nutrients cross the intestinal epithelium into the bloodstream and lymphatic system. Monosaccharides and amino acids enter blood capillaries leading directly to the liver via the hepatic portal system. Fatty acids and glycerol are re-esterified into triglycerides and packaged into chylomicrons entering lacteals.
5. Study Guidelines for Biology Quiz 7
To secure top grades in Biology Quiz 7, master enzyme sources and functions, understand bile production pathways, and memorize fat-soluble versus water-soluble vitamins.