Answer any nine from question numbers 4 to 14. Each carries two scores. (9 \u00d7 2 = 18)<\/span><\/p>\nQuestion 4.
\nThe molecular structure of 2 amino acids are given below. Name them.
\n
\nAnswer:
\na) Serine
\nb) Alanine<\/p>\n
Question 5.
\nArrange the following terms under two headings based on symmetry.
\nArthropods, Ctenophores, Molluscs, Coelenterates
\nAnswer:
\nRadial symmetry – Coelenterates, Ctenophores
\nBilateral symmetry – Arthropods, Molluscs<\/p>\n
Question 6.
\na) Expand GFR.
\nb) Even though GFR in a healthy person is 180 litres per day, the amount of urine released per day is only about 1.5 litres. Give a reason.
\nAnswer:
\na) Glomerular filtration rate
\nb) Due to tubular reabsorption 99% of filtrate is absorbed by renal tubules<\/p>\n
Question 7.
\nSelect the bones of the leg from the given list of bones.
\nHumerus, Tibia, Radius, Femur, Tarsals, Ulna, Fibula, Carpels.
\nAnswer:
\nFemur, tibia, fibula, tarsals<\/p>\n
Question 8.
\nName the following:
\na) The antibacterial enzyme present in the saliva of man helps in prevention of infection.
\nb) The digestive enzyme present in saliva.
\nAnswer:
\na) Lysozyme
\nb) Salivary amylase<\/p>\n
Question 9.
\nObserve the diagram showing the alimentary canal of cockroach. Name the parts labelled A, B, C and D
\n
\nAnswer:
\nA – Crop
\nB – Hepatic cecae
\nC – Malpighian tubules
\nD – Hindgut<\/p>\n
Question 10.
\nDiagrammatic representation of a standard ECG is given below:
\n
\na) What does the QRS complex denotes?
\nb) Mention the clinical significance of ECG.
\nAnswer:
\na) Depolarization of ventricle
\nb) If any deviation from normal shape, it indicates heart disease<\/p>\n
Question 11.
\nDistinguish between the following:
\na) IRVand ERV
\nb) IC and EC
\nAnswer:
\nIRV – Inspiratory reserve volume
\nERV – Expiratory reserve volume
\nIC – Inspiratory capacity
\nEC – Expiratory capacity<\/p>\n
Question 12.
\nComplete the given flowchart
\n
\nAnswer:
\na) Peripheral neural system
\nb) Spinal cord
\nc) Autonomic neural system
\nd) Parasympathetic neural system<\/p>\n
Question 13.
\nName the hormones whose deficiency is responsible for the following:
\na) Dwarfism
\nb) Diabetes mellitus
\nc) Cretinism
\nd) Diuresis
\nAnswer:
\na) Dwarfism – growth hormone
\nb) Diabetes mellitus – insulin
\nc) Cretinism – thyroxine
\nd) Diuresis – vasopressin<\/p>\n
Question 14.
\nIdentify the following tissues:
\na) Tissue that stores fat
\nb) Tissue that connects bones together
\nc) Tissue that connects bones to muscles
\nd) Tissue that conducts impulses
\nAnswer:
\na) Adipose tissue
\nb) Ligaments
\nc) Tendon
\nd) Neural tissue<\/p>\n
Answer any three from question numbers 15 to 18. Each carries three scores. (3 \u00d7 3 = 9)<\/span><\/p>\nQuestion 15.
\nMatch the terms in column A with those in columns B and C.<\/p>\n
\n\n\nA<\/td>\n | B<\/td>\n | C<\/td>\n<\/tr>\n |
\na) Neutrophils<\/td>\n | 2 – 3%<\/td>\n | Immune response<\/td>\n<\/tr>\n |
\nb) Eosinophils<\/td>\n | 20 – 25%<\/td>\n | Phagocytic<\/td>\n<\/tr>\n |
\nc) Lymphocytes<\/td>\n | 60 – 65%<\/td>\n | Allergic reaction<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Answer:<\/p>\n \n\n\na) Neutrophils<\/td>\n | 60 – 65%<\/td>\n | Phagocytic<\/td>\n<\/tr>\n | \nb) Eosinophils<\/td>\n | 2 – 3%<\/td>\n | Allergic reaction<\/td>\n<\/tr>\n | \nc) Lymphocytes<\/td>\n | 20 – 25%<\/td>\n | Immune response<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Question 16. \na) Complete the diagrammatic representation showing the nature of enzyme action: \n \nb) List out any two factors affecting enzyme activity. \nc) Based on the reaction formulae given below, identify the classes of the enzymes. \nS reduced + S’ oxidized \u2192 S oxidized + S’ reduced \n \nAnswer: \na) i) Enzyme product complex \nii) Product \nb) temperature, PH \nc) i) Oxidoreductases \nii) Ligases<\/p>\n Question 17. \nProtein digestion by proteolytic enzymes is given below: \n \na) Name the enzymes marked as A and B. \nb) Identify the gland which secrete these enzymes. \nc) Write the inactive form of the enzymes A and B. \nAnswer: \na) A) Chymotrypsin \nB) Carboxypeptidases \nb) Pancreas \nc) A) Chymotrypsinogen \nB) Procarboxypeptidases<\/p>\n Question 18. \na) A table showing examples of vertebrates given below. But some of the examples are wrongly given. Identify and rearrange it. \n \nb) Which of the above mentioned class is characterized by the presence of pneumatic bones? \nAnswer: \na) Pisces – Dog fish, Rohu \nAmphibia – Frog, Salamander \nReptilia – Alligator, Tortoise \nAves – Penguin, Vulture \nMammalia – Blue whale, Flying fox \nb) Class – Aves<\/p>\n | |