Welcome to biology afns test 4, tailored for candidates preparing for the Armed Forces Nursing Services (AFNS) initial entry test. This practice session covers key FSc Biology topics frequently tested in the official academic exam.
Results
CONGRATULATIONS!! PASSED
OOPS SORRY !! FAILED
#1. In a plant red fruit R is dominant over yellow fruit r and tallness T is dominant over shortness t. if a plant with RRTt genotype is crossed with a plant that is rrtt.
#2. A test cross is carried out to.
#3. A Hemophilic girl is rare because she will be born only when.
#4. A useful process for determining whether an individual is homozygous or heterozygous is.
#5. A person meets with an accident and great loss of blood has occurred. There is no time to analyse his blood group it is safe to transfuse blood of.
#6. In ABO blood grouping hw many genotypes show co – dominance.
#7. If a homozygous red flowered plant is crossed with a homozygous white flowered plant, the offspring would be.
#8. Match the folowoing hirmones with the respective disease. [a) Insulin, b) Thyroxin, c) corticoids, d) Grwoth hormone] -> [i. Addisons disease, ii. Diabetes insipidus, iii. Acromegaly, iv. Goitre, v. diabetes mellitus]
#9. which of the following is an amino acid derived hormone.
#10. Insulin is.
#11. Myxoedema is due to.
#12. Undersecretion of thyroxine/ hypothyroidism in child causes.
#13. Diabetes insipidus is due to.
#14. Acromegaly/ gigantism is caused by.
#15. Faiure of reduced insulin production causes.
#16. Adrenal gland is associated with.
#17. Brain stem is formed by.
#18. Cerebral cortex contain, except.
#19. Part of brain located between thalamus hypothalamus of fore brain and pons is known as.
#20. Hypothalamus controls.
#21. Medulla contain centre for.
#22. Resting axonal membrane is.
#23. uterian contraction at the child birth is stimulaated by / birth hormone is.
#24. At resting stage nerve cel has.
#25. Hypothalamus is not involved in.
#26. Node of ranvier occurs where.
#27. Assertion myelin sheath insulates nerve fibre and prevents its depoiarization Reason: nerve impulses are conduced more rapidly in non myelinated fibres than myelinated ones.
#28. Myelin sheath si fromed by.
#29. Appetite and satiety centres of brain are present in.
#30. In a medullated nerve fibre, conduction of impulse is faster due to.
#31. Pre-excitation potential difference between outside and inside of a nerve is called.
#32. Respiration, heart beat and peristalsis are controlled by.
#33. The only photosynthesing cells of epidermis of leaf are:
#34. Casparian strips are present in:
#35. In hypothalamus are located various centres of.
#36. Both Anti-A and Anti-B antibodies are found in _________ blood group.
#37. In an emergency person with blood group A may receive blood of which group/s?
#38. Mendel’s experiments were based on traits for which genes are present on _________ chromosomes.
#39. Which is odd one!
#40. In axonof a neuron, the impulse is generated by exchange of.
#41. The cross between heterozygous a blood group mother with B blood group father heterozygous. What will be the expected blood group of first filial generation.
#42. Assertion (A) pedigree is same in colourblindness and haemophilia Resons (R ) colourblindness and haemophilia are X linked recessive traits.
#43. Which is not related to transpiration?
#44. Guttation is mainly due to.
#45. A semipermeable membrane allows the diffusion of.
#46. Exchange of substances between a cell and its environment is due to.
#47. Loss of water from tips of leaves is.
#48. Sickle cell anaemic person will have
#49. The two alleles of a gene pair are located on.
#50. A colour blind man amrr with a daughter of colour blind father the generation will be.
#51. In a family, father has a blood group A and mother has a blood group B children show 50% probability for a blood group AB indicate that.
#52. Water ascends in plants through.
#53. Arrange root cells from soil to leaves
#54. Apoplast is the system of adjacent cell walls that is continuous throughout the plant except at the.
#55. The cells of phloem that conduct sugars and organic material throughout the plant are Known as:
#56. Nissl’s granules are found in all except
#57. Neuron can
#58. Neuron is a _________ structure composed of three major parts cell body, _________ and axon
#59. The blood group B imparted by the following genotype:
#60. Insulin is.
#61. Faiure of reduced insulin production causes.
#62. A Hemophilic girl is rare because she will be born only when.
#63. Neuron can
#64. Nissl’s granules are found in all except
#65. The cells of phloem that conduct sugars and organic material throughout the plant are Known as:
#66. If a homozygous red flowered plant is crossed with a homozygous white flowered plant, the offspring would be.
#67. Match the folowoing hirmones with the respective disease. [a) Insulin, b) Thyroxin, c) corticoids, d) Grwoth hormone] -> [i. Addisons disease, ii. Diabetes insipidus, iii. Acromegaly, iv. Goitre, v. diabetes mellitus]
#68. which of the following is an amino acid derived hormone.
#69. In a plant red fruit R is dominant over yellow fruit r and tallness T is dominant over shortness t. if a plant with RRTt genotype is crossed with a plant that is rrtt.
#70. Myxoedema is due to.
#71. Undersecretion of thyroxine/ hypothyroidism in child causes.
#72. Diabetes insipidus is due to.
#73. Acromegaly/ gigantism is caused by.
#74. A test cross is carried out to.
#75. Adrenal gland is associated with.
#76. Brain stem is formed by.
#77. Cerebral cortex contain, except.
#78. Part of brain located between thalamus hypothalamus of fore brain and pons is known as.
#79. Hypothalamus controls.
#80. Medulla contain centre for.
#81. Resting axonal membrane is.
#82. uterian contraction at the child birth is stimulaated by / birth hormone is.
#83. At resting stage nerve cel has.
#84. Hypothalamus is not involved in.
#85. Node of ranvier occurs where.
#86. Assertion myelin sheath insulates nerve fibre and prevents its depoiarization Reason: nerve impulses are conduced more rapidly in non myelinated fibres than myelinated ones.
#87. Myelin sheath si fromed by.
#88. Appetite and satiety centres of brain are present in.
#89. In a medullated nerve fibre, conduction of impulse is faster due to.
#90. Pre-excitation potential difference between outside and inside of a nerve is called.
#91. Respiration, heart beat and peristalsis are controlled by.
#92. The only photosynthesing cells of epidermis of leaf are:
#93. Casparian strips are present in:
#94. In hypothalamus are located various centres of.
#95. Both Anti-A and Anti-B antibodies are found in _________ blood group.
#96. In an emergency person with blood group A may receive blood of which group/s?
#97. Mendel’s experiments were based on traits for which genes are present on _________ chromosomes.
#98. Which is odd one!
#99. In axonof a neuron, the impulse is generated by exchange of.
#100. The cross between heterozygous a blood group mother with B blood group father heterozygous. What will be the expected blood group of first filial generation.
#101. Assertion (A) pedigree is same in colourblindness and haemophilia Resons (R ) colourblindness and haemophilia are X linked recessive traits.
#102. Which is not related to transpiration?
#103. Guttation is mainly due to.
#104. A semipermeable membrane allows the diffusion of.
#105. Exchange of substances between a cell and its environment is due to.
#106. Loss of water from tips of leaves is.
#107. Sickle cell anaemic person will have
#108. The two alleles of a gene pair are located on.
#109. A colour blind man amrr with a daughter of colour blind father the generation will be.
#110. In a family, father has a blood group A and mother has a blood group B children show 50% probability for a blood group AB indicate that.
#111. Water ascends in plants through.
#112. Arrange root cells from soil to leaves
#113. Apoplast is the system of adjacent cell walls that is continuous throughout the plant except at the.
#114. Insulin is.
#115. Faiure of reduced insulin production causes.
#116. A Hemophilic girl is rare because she will be born only when.
#117. Neuron can
#118. Nissl’s granules are found in all except
#119. The cells of phloem that conduct sugars and organic material throughout the plant are Known as:
#120. If a homozygous red flowered plant is crossed with a homozygous white flowered plant, the offspring would be.
#121. Match the folowoing hirmones with the respective disease. [a) Insulin, b) Thyroxin, c) corticoids, d) Grwoth hormone] -> [i. Addisons disease, ii. Diabetes insipidus, iii. Acromegaly, iv. Goitre, v. diabetes mellitus]
#122. which of the following is an amino acid derived hormone.
#123. In a plant red fruit R is dominant over yellow fruit r and tallness T is dominant over shortness t. if a plant with RRTt genotype is crossed with a plant that is rrtt.
#124. Myxoedema is due to.
#125. Undersecretion of thyroxine/ hypothyroidism in child causes.
#126. Diabetes insipidus is due to.
#127. Acromegaly/ gigantism is caused by.
#128. A test cross is carried out to.
#129. Adrenal gland is associated with.
#130. Brain stem is formed by.
#131. Cerebral cortex contain, except.
#132. Part of brain located between thalamus hypothalamus of fore brain and pons is known as.
#133. Hypothalamus controls.
#134. Medulla contain centre for.
#135. Resting axonal membrane is.
#136. uterian contraction at the child birth is stimulaated by / birth hormone is.
#137. At resting stage nerve cel has.
#138. Hypothalamus is not involved in.
#139. Node of ranvier occurs where.
#140. Assertion myelin sheath insulates nerve fibre and prevents its depoiarization Reason: nerve impulses are conduced more rapidly in non myelinated fibres than myelinated ones.
#141. Myelin sheath si fromed by.
#142. Appetite and satiety centres of brain are present in.
#143. In a medullated nerve fibre, conduction of impulse is faster due to.
#144. Pre-excitation potential difference between outside and inside of a nerve is called.
#145. Respiration, heart beat and peristalsis are controlled by.
#146. The only photosynthesing cells of epidermis of leaf are:
#147. Casparian strips are present in:
#148. In hypothalamus are located various centres of.
#149. Both Anti-A and Anti-B antibodies are found in _________ blood group.
#150. In an emergency person with blood group A may receive blood of which group/s?
#151. Mendel’s experiments were based on traits for which genes are present on _________ chromosomes.
#152. Which is odd one!
#153. In axonof a neuron, the impulse is generated by exchange of.
#154. The cross between heterozygous a blood group mother with B blood group father heterozygous. What will be the expected blood group of first filial generation.
#155. Assertion (A) pedigree is same in colourblindness and haemophilia Resons (R ) colourblindness and haemophilia are X linked recessive traits.
#156. Which is not related to transpiration?
#157. Guttation is mainly due to.
#158. A semipermeable membrane allows the diffusion of.
#159. Exchange of substances between a cell and its environment is due to.
#160. Loss of water from tips of leaves is.
#161. Sickle cell anaemic person will have
#162. The two alleles of a gene pair are located on.
#163. A colour blind man amrr with a daughter of colour blind father the generation will be.
#164. In a family, father has a blood group A and mother has a blood group B children show 50% probability for a blood group AB indicate that.
#165. Water ascends in plants through.
#166. Arrange root cells from soil to leaves
#167. Apoplast is the system of adjacent cell walls that is continuous throughout the plant except at the.
ššššššššš
šššššššššššššš
šššššššššš
BIOLOGY TEST 4
Welcome to biology afns test 4, tailored for candidates preparing for the Armed Forces Nursing Services (AFNS) initial entry test. This practice session covers key FSc Biology topics frequently tested in the official academic exam.
Key Topics Covered in Biology AFNS Test 4
To maximize your score in the AFNS initial academic test, practice questions across these essential biological domains:
- Homeostasis & Excretion: Osmoregulation, kidney structure, nephron physiology, and excretory products in various organisms.
- Cellular Transport & Membranes: Passive and active transport, osmosis, diffusion, and cell membrane mechanics.
- Human Physiology: Blood circulation, heart structure, immunity basics, and lymphatic systems.
- Ecology & Ecosystems: Trophic levels, nutrient cycling, energy flow, and environmental dynamics.
Effective Revision Tips for Test 4
- Revisit FSc Diagrams & Terms: Review key anatomical terms and physiological processes from your FSc textbooks.
- Track Time and Accuracy: Practice answering questions promptly while maintaining accuracy to prepare for the timed computer test.
- Review Incorrect Attempts: Pay special attention to any wrong answers upon completing the quiz to reinforce weak areas.
Useful Resources & Next Steps
- Next Quiz: Move forward to practice Biology AFNS Test 5.
- Main Hub: Return to All AFNS Biology Practice Quizzes to access the complete test series.
- Official Details: For official registration and eligibility criteria, visit the Join Pak Army Official Website.
General Biology Quiz 4: Genetics, DNA Technology & Inheritance
Genetics and molecular biology study how genetic information is encoded, expressed, replicated, and transmitted across generations. Advances in molecular genetics have transformed modern medicine, forensic science, and agriculture. Biology Quiz 4 tests foundational principles of Mendelian genetics, gene expression, and DNA technologies.
š§¬ Master the Central Dogma: Understanding DNA ā RNA ā Protein expression pathways is essential for molecular genetics assessments.
1. Mendelian Genetics & Principles of Inheritance
Gregor Mendel, known as the father of modern genetics, established the fundamental rules of trait inheritance through controlled breeding experiments with garden pea plants (Pisum sativum). His core principles include:
- Law of Segregation: During gamete formation, the two alleles for a gene segregate from one another, so that each gamete carries only one allele for each gene.
- Law of Independent Assortment: Genes located on different chromosomes assort independently during gamete formation, generating varied genetic combinations.
- Principle of Dominance: In a heterozygous individual, the dominant allele masks the expression of the recessive allele in the phenotype.
2. Molecular Structure of Nucleic Acids (DNA & RNA)
Nucleic acids are biological macromolecules composed of nucleotide monomers. A nucleotide consists of a nitrogenous base, a five-carbon pentose sugar, and a phosphate group.
Structural Comparison:
ā¢ DNA (Deoxyribonucleic Acid): Double-stranded helix containing deoxyribose sugar and bases Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).
ā¢ RNA (Ribonucleic Acid): Single-stranded polymer containing ribose sugar and bases Adenine (A), Uracil (U), Cytosine (C), and Guanine (G).
ā¢ DNA (Deoxyribonucleic Acid): Double-stranded helix containing deoxyribose sugar and bases Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).
ā¢ RNA (Ribonucleic Acid): Single-stranded polymer containing ribose sugar and bases Adenine (A), Uracil (U), Cytosine (C), and Guanine (G).
3. The Central Dogma of Molecular Biology
The Central Dogma describes the directional flow of genetic information within biological systems from DNA code to functional protein products:
- Transcription: Occurs in the cell nucleus, where RNA Polymerase synthesizes a complementary messenger RNA (mRNA) strand using a DNA template.
- Translation: Occurs at ribosomes in the cytoplasm, where transfer RNA (tRNA) molecules decode mRNA codons into a specific amino acid sequence to build proteins.
4. Chromosomal Mutations & Genetic Disorders
Mutations are changes in the nucleotide sequence of an organism’s genome. They can be caused by replication errors or environmental mutagens like UV radiation and chemicals.
Genetic disorders can stem from point mutations, gene frame-shifts, or numerical chromosomal abnormalities:
- Down Syndrome (Trisomy 21): Caused by non-disjunction during meiosis resulting in three copies of chromosome 21.
- Sickle Cell Anemia: A point mutation in the hemoglobin gene altering a single amino acid (glutamic acid to valine), distorting red blood cells.
- Hemophilia: An X-linked recessive disorder that impairs blood clotting pathways.
5. Preparation Checklist for Biology Quiz 4
To prepare effectively for Biology Quiz 4, practice solving monohybrid and dihybrid Punnett squares, memorize base-pairing rules (A=T, Cā”G), and review transcription/translation enzymes.