24277 + Interview Questions in Biology in Class 12 Page 277 InterviewSolution

13801.	Question : July 11th is observed as
Answer» no TOBACCO DAY World health day World population day World ENVIRONMENT day ANSWER :C

Discussion

13802.	Question : m-RNA is synthesised on DNA in template in which direction :
Answer» `5^'rarr 3^'` `3^'rarr 5^'` Both any Answer :C

Discussion

13803.	Question : July 11 is observed as:
Answer» No TOBACCO day World HEALTH day World POPULATION day World ENVIRONMENT day Answer :D

Discussion

13804.	Question : m-RNA or massenger RNA .
Answer» Solution :(1)m-RNA is a simple molecule which shows linear structure without any folds.(2)It performs the function of transcription during protein synthesis.(3)m-RNA is formed from DNA by the process of transcription in the nucleus.Later it comes in the cytoplasm and moves to the ribosomes.Since it carries the messange for the protein synthesis from DNA to ribosomes.therefore,it is called messenger RNA(4)Of the TOTAL CELLULAR RNA,m-RNA forms 3-5%.It has molecule wieght of about 5,00,000.(5)There are two ends in m-RNA molecule.viz.'3 and 5' ends.(6)The nucleotide of m-RNA are arranged in group of three triplets or codons.the sequence of codon on the m-RNA strand is called genetic code or m-RNA language or crytogram.(7)The beginning of m-RNA molecule is called start codon or initiation codon.It lies at 5' end.It is AUG or Sometimes GUG.(8)m-RNA ends at 3' end with stop codon or termination codon,where are UAA.UAG or UGA.(9)EACH codon on m-RNA SPECIFIES a PARTICULAR amino acid.(E.g.AUG specifies glycine or g-glycine).(10)The codons UAA.UAG and UGA do not specify any amino acid and hence they are known as nonsense codons.(11)The main function of m-RNA is to CARRY coded informartion about the sequence of amino acids in the polypeptide chain,from DNA to ribosomes.This further leads to protein synthesis.

Discussion

13805.	Question : July 11 is:
Answer» World ENVIRONMENT Day World POPULATION Day World AIDs Day World Education Day Answer :B

Discussion

13806.	Question : Joint the correct column-I, II, III and IV.
Answer» (A-Q-Y-4), (B-P-W-1), (C-R-W-2), (D-S-X-3) (A-P-W-1), (B-Q-Z-2), (C-R-X-3), (D-S-Y-4) (A-S-X-3), (B-Q-Y-2), (C-P-Z-4), (D-R-W-1) (A-Q-Y-1), (B-S-Z-4), (C-R-W-3), (D-P-X-2) ANSWER :A

Discussion

13807.	Question : m-RNA is formed by
Answer» translation transcription duplication capping Answer :B

Discussion

13808.	Question : joint where synovial capsule and synovial fluid are lacking is
Answer» Intercarpal JOINT PUBIC symphysis Interphalangeal joint Hip joint Answer :B

Discussion

13809.	Question : Joint the correct column - I, II and III.
Answer» (A-R-Y), (B-Q-Z), (C-P-X), (D-S-W) (A-Q-W), (B-P-Z), (C-R-Y), (D-S-X) (A-P-Z), (B-S-W), (C-Q-Y), (D-R-X) (A-R-X), (B-P-W), (C-Q-Y), (D-S-Z) ANSWER :D

Discussion

13810.	Question :RNA directs the building of proteins through a sequence of :
Answer» EXONS introns codons anticodons Answer :C

Discussion

13811.	Question : Joint that produces an angular motion and permits only flexion and extension is
Answer» GLIDING joint hinge joint pivot joint ball and SOCKET joint Answer :B

Discussion

13812.	Question : Lysozyme in saliva and tear dissolve bacterial_____
Answer» ANSWER :CELL WALL

Discussion

13813.	Question : Joint Forest Management Concept was introduced in India during :
Answer» 1970S 1980S 1990s 1960s Solution :1980s

Discussion

13814.	Question : Lysosomes have
Answer» HYDROLASES ACTIVE at ACIDIC pH Lipases and PROTEASES only Hydrolases active at pH=7 Hydrolases active at BASIC pH Answer :A

Discussion

13815.	Question : Joint between carpal and metacarpal of thumb is
Answer» CONDYLOID JOINT Saddle joint Gliding joint PIVOT joint ANSWER :B

Discussion

13816.	Question : Lysis offoreign cells in mediated through:
Answer» IG m only Ig A only Ig m and Ig G Ig DAND Ig E Answer :C

Discussion

13817.	Question : Joint between bones of human skull is :-
Answer» HINGE Joint Synovial Joint Cartilagenous joint Fibrous Joint Answer :D

Discussion

13818.	Question : Lysis of foreign cells is mediated through
Answer» IGM only IgA only IgM and IgG IgD and IgE Answer :C

Discussion

13819.	Question : Joint between atlas and axis is :-
Answer» PIVOT joint Fibrous joint Angular joint Hinge joint Answer :A

Discussion

13820.	Question :Lysine and tryptophan are -
Answer» Proteins Non-ESSENTIAL AMINO ACIDS Essential amino acids Aromatic amino acids Solution :Lysine and TRYPTOPHAN are essential amino acids

Discussion

13821.	Question : Join correct column.
Answer» (a - Z), (b - Y), (c - W), (d - X) (a - W), (b - Z), (c - X), (d - Y) (a - Y), (b - Z), (c - X), (d - W) (a - Y), (b - W), (c - Z), (d - X) SOLUTION :(a - Y), (b -W), (c - Z), (d - X)

Discussion

13822.	Question : Join correct column.
Answer» (a- X), (B- Y), (C - Z), (d - W) (a -W), (b -Z), (c - X), (d -Y) (a- Z), (b - W), (c - X), (d - Y) (a - Y), (b - X), (c - W), (d - Z) SOLUTION :(a - Z), (b - W), (c - X), (d - Y)

Discussion

13823.	Question : Join correct column.
Answer» (a - X), (b - Z), (c - W), (d - Y) (a - Z), (b - W), (c - X), (d - Y) (a - X), (b - Y), (c - Z), (d - W) (a - Y), (b - Z), (c - W), (d - X) SOLUTION :(a - Z), (b - W), (c - X), (d - Y)

Discussion

13824.	Question : Lymphocytes are biconcave discs.
Answer» ANSWER :ERYTHROCYTES cytes

Discussion

13825.	Question : Join correct column.
Answer» (A - S - Z - 3), (B - R - W - 1), (C - Q - Y - 4), (D - P - X - 2) (A - P - W - 1), (B - S - X - 2), (C - R - Z - 4), (D - Q - Y ·3) (A - Q - X - 2), (B - P - Y - 3), (C - R - W - 1), (D - S - Z - 4) (A - P - Y - 3), (B - Q - W - 4), (C - S - X - 2), (D - R - Z - 1) SOLUTION :(A - S - Z - 3), (B - R - W - 1), (C - Q - Y - 4), (D - P - X - 2)

Discussion

13826.	Question : Lymphocyte are capable of synthesizing
Answer» Antigens ANTIBODIES ANTIBIOTICS NONE of these Solution :Antibodies

Discussion

13827.	Question : Join correct column.
Answer» (a - Z), (B - W), (c - X), (d - Y) (a - Y), (b - W), (c - X), (d - Z) (a - Y), (b - X), (c - Z), (d - W) (a - W), (b - X), (c - Z), (d - Y) SOLUTION :(a - Z), (b - W), (c - X), (d - Y)

Discussion

13828.	Question : Join correct column.
Answer» (A - R - W), (B - P - X), (C - S - V), (D - Q - Z) (A - P - X), (B - Q - V), (C - R - Z), (D - S - W) (A - P - V), (B - S - X), (C - Q - W), (D - R - Z) (A - P - Z), (B - Q - V), (C - S - X), (D - R - W) Solution : (A - R - W), (B - P - X), (C - S - V), (D - Q - Z)

Discussion

13829.	Question : Join correct column.
Answer» <P>(A - R - Z), (B - Q - W), (C - P - X), (D - S - Y) (A - P - W), (B - R - Z), (C - S - Y), (D - Q - X) (A - R - Z), (B - P - X), (C - Q - W), (D - S - Y) (A - Q - X), (B - P - V), (C- R - Z), (D - S- W) SOLUTION :(A - R - Z), (B - P - X), (C - Q - W), (D - S - Y)

Discussion

13830.	Question : Lymph nodes are secondary lymphoid organs. Explain the role of lymph nodes in our immune response.
Answer» Solution :Role of Lymph Nodes in Immune SYSTEM: (a) Lymphocytes and MACROPHAGES reside in the lymph nodes. (B) They FILTER out, immobilise and dispose off the pathogens.

Discussion

13831.	Question : Join correct column.
Answer» (A - S - W), (B - P - Z), (C - Q-V), (D - R - X) (A - P - V), (B - S - X), (C - R - Z), (D - Q - W) (A - S - X), (B - R - V), (C - Q- W), (D - P - Z) (A - R - Z), (B - Q - X), (C - p - W), (D - S - Y) SOLUTION :(A - S - W), (B - P - Z), (C - Q-V), (D - R - X)

Discussion

13832.	Question : Lymph nodes are known for their role in production of lymphocytes. What is their other role in providing immunity? How are lymph nodes arranged in the body?
Answer» Solution :1. Lymph nodes are small, oval or bean shaped bodies arranged along the course of lymphatic vessels. 2. They are scattered throughout the body. However, they are MAXIMUM in the neck, armpit and groin. 3. They PROVIDE immunity by producing lymphocytes. 4. In addition to this FUNCTION, they ACT as filters as macrophages in the lymph nodes REMOVE bacteria, foreign material and cell debris.

Discussion

13833.	Question : Join correct column.
Answer» (A - P - W), (B - S - Y), (C - Q - Z), (D - R - X) (A - R - Z), (B - S - W), (C - P - X), (D - Q - Y) (A - R - X), (B - Q - Y), (C - P - W), (D - S - Z) (A - R - Y), (B - S - X), (C - Q - W), (D - P - Z) SOLUTION :(A - R - Z), (B - S - W), (C - P - X), (D - Q - Y)

Discussion

13834.	Question : Lymph nodes are secondary lymphoid organs. Describe the role of lymph nodes in our immune response.
Answer» SOLUTION :Lymph NODES PROVIDE the sites for interaction of lymphocytes with the antigen. When the microorgansims ENTER the lymph nodes, lymphocytes present there are acitvated and CAUSE the immune response.

Discussion

13835.	Question : Join correct column.
Answer» <P>(A-S-Y), (B-Q-X), (C-P-Z), (D-R-W) (A - P - W), (B - R - X), (C - Q - Y), (D - S - Z) (A - Q - X), (B - R - Z), (C - S - W), (D - P - Y) (A-S-Y), (B-Q-Z), (C-R-W), (D-P-X) SOLUTION : (A-S-Y), (B-Q-Z), (C-R-W), (D-P-X)

Discussion

13836.	Question : Lymph node is primary lymphoid organ.
Answer» ANSWER :Secoundary LYMPHOID ORGAN.

Discussion

13837.	Question : Lymph from abdominal region is finally collected by
Answer» right LYMPHATIC duet chyliferous duct right SUBCLAVIAN vein left INTERNAL JUGULAR vein Answer :B

Discussion

13838.	Question : Join correct column.
Answer» (A - Q - W - 1), (B - P - X - 2), (C - R - Y - 4), (D - S - Z - 3) (A-Q-Y-1), (B-S-W-3), (C-P-X-2), (D-R-Z-4) (A - P - X - 3), (B - S - Y - 2), (C - R - Z - 4), (D - Q - W - 1) (A-R-Y-1), (B-P-X-4), (C-Q-W-3), (D-S-Z-2) Solution :(A-Q-Y-1), (B-S-W-3), (C-P-X-2), (D-R-Z-4)

Discussion

13839.	Question : Lymph capillaries present in a villus are called:
Answer» Lacteal Venule Arteriole Sinus Answer :A

Discussion

13840.	Question : Johny, a Plus Two student is from a tribal colony with lower level of vitamins, minerals and protein deficiency. He wishes to be a plant breeder to help the public by producing new crops with high levels of vitamins, minerals, protein etc. Identify the phenomenon.
Answer» Solution :Biofortification. It is the BREEDING of crops with HIGHER levels of vitaminshi and MINERALS.

Discussion

13841.	Question : Jhum cultivation has been in practice from earlier days, but it is considered more problematic these days. Why?
Answer» SOLUTION :Enough TIME gap is not being GIVEN for the natural process of RECOVERY of land from the effect of cultivation.

Discussion

13842.	Question : Luxuriance is the term used on par with ………… .
Answer» (a) Heterosis (b) ANTHESIS (c) HYBRIDS (d) Mutant breeds Answer :A

Discussion

13843.	Question : JG cells kidney produces
Answer» Rennin Renin erythropoitin Both (2) and (3) ANSWER :D

Discussion

13844.	Question : lurassic period of the mesozoic era was characterised by
Answer» radiation of reptiles and ORIGIN of mammal like reptiles dinosaurs become extinct and angiosperms appeared FLOWERING plants and first dinosaurs appeared gymnosperms were dominant plants and first BIRDS appeared Solution :gymnosperms were dominant plants and first birds appeared

Discussion

13845.	Question : JG cells get activated when there is
Answer» more GFR normal GFR FALL in GFR both (1) and (3) ANSWER :C

Discussion

13846.	Question : Lungs do not collapse between breaths and w some air always remains in the lungs which can never be expelled because
Answer» there is a negative PRESSURE in the lungs there is a negative intrapleural pressure pulling at the LUNG WALLS there is a positive intrapleural pressure pressure in the lungs is higher than the atmospheric pressure Answer :B

Discussion

13847.	Question : Lungs are enclosed in:
Answer» Pericardium Peritoneum Pleural membrane None of these Answer :C

Discussion

13848.	Question : JFM - Joint Forest Managements FOAM - _____
Answer» SOLUTION :FRIENDS of the ARCATA MARSH

Discussion

13849.	Question : Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:
Answer» RESIDUAL VOLUME INSPIRATORY RESERVE volume Tidal volume EXPIRATORY reserve volume Answer :A

Discussion

13850.	Question : Jaya read in a biotechnology book that alien DNA can be introduced into host cell by micro injection and biolistics. Explain these methods
Answer» Solution :Micro injectin: Recombinant DNA is directly injected into the NUCLEUS of an ANIMAL cell. Biolistics/Gene gun: The micro particles of GOLD or tungsten COATED with foreign DNA are bombarded with high velocity into plant using a hellium pressure particle gun device.

Discussion

Explore topic-wise InterviewSolutions in .

Question : July 11th is observed as

Question : m-RNA is synthesised on DNA in template in which direction :

Question : July 11 is observed as:

Question : m-RNA or massenger RNA .

Question : July 11 is:

Question : Joint the correct column-I, II, III and IV.

Question : m-RNA is formed by

Question : joint where synovial capsule and synovial fluid are lacking is

Question : Joint the correct column - I, II and III.

Question :RNA directs the building of proteins through a sequence of :

Question : Joint that produces an angular motion and permits only flexion and extension is

Question : Lysozyme in saliva and tear dissolve bacterial_____

Question : Joint Forest Management Concept was introduced in India during :

Question : Lysosomes have

Question : Joint between carpal and metacarpal of thumb is

Question : Lysis offoreign cells in mediated through:

Question : Joint between bones of human skull is :-

Question : Lysis of foreign cells is mediated through

Question : Joint between atlas and axis is :-

Question :Lysine and tryptophan are -

Question : Join correct column.

Question : Join correct column.

Question : Join correct column.

Question : Lymphocytes are biconcave discs.

Question : Join correct column.

Question : Lymphocyte are capable of synthesizing

Question : Join correct column.

Question : Join correct column.

Question : Join correct column.

Question : Lymph nodes are secondary lymphoid organs. Explain the role of lymph nodes in our immune response.

Question : Join correct column.

Question : Lymph nodes are known for their role in production of lymphocytes. What is their other role in providing immunity? How are lymph nodes arranged in the body?

Question : Join correct column.

Question : Lymph nodes are secondary lymphoid organs. Describe the role of lymph nodes in our immune response.

Question : Join correct column.

Question : Lymph node is primary lymphoid organ.

Question : Lymph from abdominal region is finally collected by

Question : Join correct column.

Question : Lymph capillaries present in a villus are called:

Question : Johny, a Plus Two student is from a tribal colony with lower level of vitamins, minerals and protein deficiency. He wishes to be a plant breeder to help the public by producing new crops with high levels of vitamins, minerals, protein etc. Identify the phenomenon.

Question : Jhum cultivation has been in practice from earlier days, but it is considered more problematic these days. Why?

Question : Luxuriance is the term used on par with ………… .

Question : JG cells kidney produces

Question : lurassic period of the mesozoic era was characterised by

Question : JG cells get activated when there is

Question : Lungs do not collapse between breaths and w some air always remains in the lungs which can never be expelled because

Question : Lungs are enclosed in:

Question : JFM - Joint Forest Managements FOAM - _____

Question : Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:

Question : Jaya read in a biotechnology book that alien DNA can be introduced into host cell by micro injection and biolistics. Explain these methods