Welcome to Biology Test 1 AFNS, specially designed for students preparing for the Armed Forces Nursing Services (AFNS) initial entry test. This online practice test covers essential Biology MCQs, fundamental concepts, and repeated exam questions to help you evaluate your preparation and improve your score.
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#1. Steroids are.
#2. Palmitic acid is more soluble than butyric acid in:
#3. The linkage that joins two adjacent nucleotides in RNA is.
#4. Which one of the following is correct sequence of carbohydrates in increasing order of complexity of chemical structure?
#5. Protein synthesis occurs in.
#6. The chemical nature of most of the cellular secretions:
#7. All of the following are keto sugars except:
#8. How many water molecules are required for synthesis of a triglyceride molecule?
#9. Two opposite and anti-parallel strands DNA are held together by
#10. On hydrolysis neutral lipid yields:
#11. Which of the following statement is not related with fibrous proteins?
#12. Which of the following type of lipids are included in polymers?
#13. What is ribonucleoside?
#14. All the following are nucleosides except.
#15. How many carbon atoms contribute to form a Pyran ring in glucopyranose?
#16. Mitochondria are found in:
#17. Which of the following organelles is directly connected to the outer membrane of the nucleus in a eukaryotic cell.
#18. Match column -1 with column -II (A. RER -> Protein synthesis, B. Cell wall -> Support, C. Flagella -> Movement, D. Lysosomes -> Intracellular)
#19. Detoxification site in the liver cell is.
#20. The oxygen and carbon dioxide crosses the plasma membrane by the process of
#21. Golgi bodies produce.
#22. The entire cell wall in prokaryotes is regarded as a single huge complex known as
#23. When a lysosome fuses with a phagosome it results in the formation of.
#24. Which one is absent in protein.
#25. Starch and cellulose are.
#26. Peptide bond is formed between two amino acid through.
#27. Which is wrongly matched.
#28. Glycogen related to.
#29. That an enzyme interacts with specific substrate is explained by.
#30. Ribose is differentiable form deoxyribose in having.
#31. DNA occurs in.
#32. Nucleus is deeply stained with
#33. Chromatin is made up of.
#34. Ribosomes and DNA occur in:
#35. Class of enzyme contained in lysosome.
#36. Polymer of a-D glucose is.
#37. Benedict reagent test is conducted to confirm presence of.
#38. Part of enzyme which combines with non-protein part to form functional enzyme is.
#39. Fluid mosaic model of plasma membrane purposes that.
#40. According to fluid mosaic model plasma membrane is composed of.
#41. The fluidity of the plasma membrane increases with
#42. A peptide chain attains secondary structure through the formation of.
#43. Sugar found in DNA is
#44. Nitrogen base + pentose sugar + phosphate group is.
#45. Number of carbons in a ring of deoxyribose sugar is.
#46. Insulin produced be B- cells in our body contains amino acids.
#47. Molecules functioning as biocatalysts in addition to enzymes are.
#48. Enormous diversity of protein molecules.
#49. ATP is.
For official eligibility criteria and registration details, visit theJoin Pak Army Official Website.
BIOLOGY TEST 1 AFNS – Online Preparation Quiz
Welcome to Biology Test 1 AFNS, specially designed for candidates preparing for the Armed Forces Nursing Services (AFNS) initial entry test. This online practice test covers essential Biology MCQs, fundamental concepts, and repeated exam questions to help you evaluate your preparation and improve your overall score.
Important Topics Covered in AFNS Biology Test 1
To clear the AFNS initial academic test on your first attempt, you must have a solid grasp of key biological concepts covered in the FSc Biology syllabus. This practice test includes questions from the following important areas:
- Cell Biology & Physiology: Structure and functions of plant and animal cells, cell organelles, and cellular transport mechanisms.
- Human Anatomy & Physiology: Key organ systems including the digestive, circulatory, respiratory, and nervous systems.
- Genetics & Evolution: Mendelian inheritance, DNA structure, protein synthesis, and evolutionary principles.
- Ecology & Environment: Ecosystem dynamics, food chains, energy flow, and environmental issues.
How to Prepare for the AFNS Biology Initial Test
- Review FSc Textbooks: Revisit your 1st year and 2nd year Biology textbooks thoroughly, as most initial test MCQs are directly extracted from standard curricula.
- Focus on Terminology: Memorize key scientific terms, biological definitions, and functional roles of biological compounds.
- Practice Time Management: Online quizzes help you build speed and accuracy under real exam time limits.
- Identify Weak Areas: Analyze wrong attempts after completing each practice test and review those specific chapters again.
Frequently Asked Questions (FAQs)
Q1: What is the format of the AFNS Biology test?
The AFNS initial academic test consists of multiple-choice questions (MCQs) conducted on a computer at the selection center.
Q2: Is negative marking applicable in the AFNS test?
Generally, there is no negative marking in the initial test, but candidates should attempt all questions accurately within the given time limit.
Q3: How many practice tests should I complete before the exam?
It is recommended to attempt all 10 practice test modules to ensure comprehensive coverage of the entire syllabus.
Links to Include:
- Internal Link: “For more practice modules, return to All AFNS Biology Practice Quizzes or continue to Biology Test 2 AFNS.”
- External Link: “For official eligibility requirements and registration details, visit the Join Pak Army
Official Website.”
biology test 1 afns
General Biology Quiz 1: Fundamental Cytology & Cellular Dynamics
Biology is the cornerstone of empirical biological sciences, examining living systems across structural, functional, molecular, and evolutionary spectrums. For candidates appearing in entry tests, competitive examinations, and academic assessments, establishing a solid foundation in cell biology (cytology) is necessary to clear high-level multiple-choice quizzes.
💡 Study Tip: Cellular architecture questions frequently appear in entry tests. Focus on organelle structure, membrane transport systems, and energy metabolism pathways.
1. The Foundation of Cellular Organization
The cell serves as the basic structural, functional, and physiological unit of all biological life. Cell theory states that all organisms are composed of one or more cells, that the cell is the most fundamental unit of life, and that all cells originate from pre-existing cells through cell division. Organisms are fundamentally divided into two major cellular classes: Prokaryotes and Eukaryotes.
Prokaryotic cells (found in bacteria and archaea) lack a membrane-enclosed nucleus and internal membrane-bound organelles. Their genetic code floats inside a specialized region named the nucleoid. In contrast, eukaryotic cells (found in plants, animals, fungi, and protists) possess a well-defined nucleus that houses DNA, surrounded by specialized compartmentalized structures call organelles.
2. Key Organelles and Their Structural Roles
Every eukaryotic cell operates through organized organelle functionality to sustain homeostatic equilibrium and cellular survival. Below is a structured breakdown of fundamental organelles tested in Biology Quiz 1:
| Organelle | Primary Cellular Role |
|---|---|
| Nucleus | Houses genomic DNA, regulates gene expression, and controls ribosome assembly in the nucleolus. |
| Mitochondria | Known as the powerhouse of the cell; produces ATP energy through oxidative phosphorylation. |
| Ribosomes | Non-membrane-bound complexes responsible for translating messenger RNA into functional proteins. |
| Chloroplasts | Found in photosynthetic cells; contains chlorophyll pigments to execute the Calvin cycle and light reactions. |
| Plasma Membrane | Selectively permeable phospholipid bilayer managing nutrient influx and metabolic waste removal. |
3. Cellular Metabolism & Energy Conversion
Energy transformation is required to sustain metabolic activities. Cellular respiration is a key pathway in which biological cells break down glucose molecules to generate Adenosine Triphosphate (ATP), which acts as the universal chemical energy currency in living systems.
Cellular respiration unfolds through two primary environmental mechanisms depending on oxygen presence:
- Aerobic Respiration: Occurs under oxygenated conditions, yielding approximately 36 to 38 ATP molecules per glucose molecule through Glycolysis, the Citric Acid Cycle (Krebs Cycle), and the Electron Transport Chain.
- Anaerobic Respiration (Fermentation): Takes place in oxygen-deprived environments, yielding only 2 ATP molecules alongside metabolic byproducts like lactic acid in animal muscle tissues or ethanol in yeast cells.
4. Fundamentals of Genetics and DNA Replication
Genetics focuses on heredity, trait transmission, and genetic variation. Deoxyribonucleic Acid (DNA) holds the master blueprints for cellular proteins. Discovered by Watson and Crick, the double-helix geometry of DNA is made of monomeric nucleotide units consisting of a nitrogenous base (Adenine, Thymine, Cytosine, or Guanine), a deoxyribose sugar molecule, and a phosphate group.
During the S-phase of the interphase cell cycle, accurate semi-conservative DNA replication guarantees that daughter cells receive precise genetic copies during mitosis and meiosis.
5. Mitosis versus Meiosis: Mechanisms of Cell Division
Multicellular organisms multiply, repair, and reproduce via two specialized cellular division processes:
- Mitosis: Produces two genetically identical diploid daughter cells from a single diploid parent cell. It is responsible for tissue growth, somatic regeneration, and asexual reproduction.
- Meiosis: A specialized two-stage division mechanism in germ cells producing four non-identical haploid gametes (sperm and egg cells), driving genetic diversity via crossing over.
6. Preparation Framework for Biology Quiz 1
To maximize performance in Biology Quiz 1, candidates must master basic biological vocabulary, study cellular structural diagrams, and practice timed multiple-choice assessments. Focus on understanding organelle transport, enzyme kinetics, and biochemical metabolic pathways.