22339 + Interview Questions in Biology in Class 11 Page 428 InterviewSolution

21351.	Question : _____acts as a channel between the protoplasm of adjacent cells.
Answer» MIDDLE lamellae Pits PLASMODESMATA Primary CELL wall Solution :Plasmodesmata

Discussion

21352.	Question : Activity of notrogenase in nitrogen fixing micro-organisms can be seen when
Answer» METHANE is CONVERTED to ethane Ethane is converted to methane Ethylene is converted to acetylene Acetylene is converted or REDUCED to ethylene Answer :C

Discussion

21353.	Question : Active transport from outside to inside of molecules across a membrane requires :
Answer» CYCLIC AMP acetyl chlorine lecithin ATP Answer :C

Discussion

21354.	Question :Which of the following is true about Active transport?
Answer» uses energy to pump molecules against the concentration gradient is as active process is carried out by membrane proteins all of these. Solution :Active transport is the transport of solute LINKED with some metabolic reaction (or reactions) INVOLVING EXPENDITURE of energy. The molecules or ions, in active transport, cross a protplasmic membrane (viz, plasma membrane, tonoplast, etc.) against the CHEMICAL POTENTIAL (concentration) gradient. This kind of transport is carried out by membrace proteins.

Discussion

21355.	Question : Active transport:
Answer» REQUIRES a carrier protein requires a SUPPLY of ENERGY moves a molecule against its concentration gradient all of the above are correct Answer :D

Discussion

21356.	Question : Active transport :
Answer» SOLUTION :It OCCURS in the opposite direction of gradient. This TRANSPORT is BASED on process action energy in which energy is used.

Discussion

21357.	Question : Differentiate between: Active absorption through osmotic mechanism and Active absorption through non-osmotic mechanism.
Answer» Solution :Active absorption OCCURS as a result of activities in the root and does not CONCERN the shoot. In this process, an expenditure of metabolic energy may be required for water absorption. Water absorbed by osmotic mechanism does not require directly an expenditure of energy. The energy is utilized in the absorption and accumulation of salts. The water movement occurs along the gradients of diffusion pressure DEFICIT (DPD). On the other hand, water absorption through non-osmotic mechanism INVOLVES direct expenditure of metabolic energy. It occurs against a diffusion pressure GRADIENT.

Discussion

21358.	Question : Active and passive absorption of minerals
Answer» Solution :In active absorption of minerals, the movement of ions across membrane TAKES place against CONCENTRATION gradient and ENERGY is consumed in the process. Whereas, in passive absorption, the movement of ions across membrane takes place ACCORDING to concentration gradient and no energy is consumed in the process. A SPECIFIC carrier is involved in active absorption whereas no carrier is involved in passive absorption.

Discussion

21359.	Question : Activation of B-lymphocytes is done by
Answer» `I_(G)` A `I_(g)` G `I_(g)`E `I_(g)` D Answer :D

Discussion

21360.	Question : Active absorption and passive absorption
Answer» Solution :In ACTIVE absorption, an EXPENDITURE of METABOLIC energy is required for absorption, whereas in passive absorption, no metabolic energy is required. Furthermore, active absorption OCCURS as a result of activities in the root and does not concern the shoot. Whereas in passive mechanism the root functions as passive absorption surface and WATER moves through the root rather than of it.

Discussion

21361.	Question :Actinomorphic flower exhibits
Answer» RADIAL SYMMETRY BILATERAL symmetry Binal symmetry CUBIC symmetry Answer :A

Discussion

21362.	Question : Actinomycetes comes under ……………kingdom.
Answer» FUNGI chromista MONERA protista Solution :monera

Discussion

21363.	Question : Actin is present in thin filaments.
Answer» ANSWER :T

Discussion

21364.	Question : Actin binding sites are located on
Answer» troponin tropomyosin meromyosin bith (b) and (c). SOLUTION :HEAVY meromyosin consists of TWO globular subframent (S-1) and one rod shaped fibre sub-fragment (S-2). Each S-1 segment contains an ATPASE site and a binding site for actin.

Discussion

21365.	Question : Actin is present in thin filament
Answer» ANSWER : TRUE

Discussion

21366.	Question : Write true or false . If false, change the statement so that it becomes true.(a) actin is present inthin filament
Answer» ANSWER : TRUE

Discussion

21367.	Question : Actin is present in thin filament A.TrueB.False
Answer» ANSWER : TRUE

Discussion

21368.	Question : Actin binding sites lie on tail of myosin/head of myosin.
Answer» SOLUTION :HEAD of MYOSIN

Discussion

21369.	Question : Actin vinding sites are located on
Answer» on the HEAD of myosin PROTEINS (CALLED meromyosin). SOLUTION :On the head of myosin proteins (called meromyosin).

Discussion

21370.	Question : ACT4 stimulates melanin synthesis in Ans.( Melanocytes) 10. LH is also known as .............
Answer» SOLUTION :( INTERSTITIAL CELL STIMULATING HORMONE)

Discussion

21371.	Question : Acrosome of sperm is derived from
Answer» GOLGI vesicle Lysosome Golgi tubule cisternae ANSWER :A

Discussion

21372.	Question : Acromion is seen in.
Answer» VERTEBRAL column Pelvic GIRDLE Femur PECTORAL girdle Solution :Pectoral girdle

Discussion

21373.	Question : Acromion process is characteristacally found in the_______________of mammals.
Answer» pectrol girdle sperm pelvic dirdle skull Solution :Each pectoral girdle consists of two bones -1 clavicle and 1 scapula. The scapula consists of a sharp ridge, the spine and a TRIANGULAR body. The end of the soine projects as a FLATTENED and EXPANDED process called acromion. This process ARTICULATES with theclavicle.

Discussion

21374.	Question : What is acromion process?
Answer» Solution : Scapula of PECTORAL GIRDLE is large, flat and TRIANGULAR bone PROCESS present on it is CALLED acromion process.

Discussion

21375.	Question : Acromegaly is due to oversecretion of
Answer» GH is children GH after adolescence ACTH thyroid in ADULTS

Discussion

21376.	Question : Acquired immunity is characterised by
Answer» Memory, PATHOGEN specificity Memory, but NON-specific Non specific NATURE, WITHOUT memory Uniformity, nonspecificity Answer :A

Discussion

21377.	Question :(a)Correct the statement : Imbibition is a special type of diffusion when water is absorbed byliving cell. (b)Correct the statement :Most of water flow in the roots occurs via symplast. (c) Correct the statement : Cells shrink in hypotonic solution and swell in hypertonic solution
Answer» Solution : (a) OSMOSIS is a special TYPE, of diffusion when water is absorbed by livingcells. (b)Most of the water flows in the roots OCCURS via the apoplast (c )Cells shrink in HYPERTONIC, solution and swell in a HYPOTONIC solution.

Discussion

21378.	Question : Acid hydrolases are found in:
Answer» GOLGI body ER Lysosomes Ribosomes Answer :C

Discussion

21379.	Question : Acid hydrolases are found in :
Answer» GOLGI body ER Lysosomes Vacuole Answer :C

Discussion

21380.	Question : Acetylcholine is …………….released at the …………....
Answer» SOLUTION :NEUROTRANSMITTER, SYNAPSES

Discussion

21381.	Question : Acetyl Co-A is formed from ……………….. and coenzyme A.
Answer» SOLUTION :PYRUVIC ACID

Discussion

21382.	Question : Acetabulum is present in the ______girdle.
Answer» ANSWER :PELVIC

Discussion

21383.	Question : Acetabulum is part of .....
Answer» PELVIC GIRDLE Pectoral girdle Fore arm Upper arm Solution :Pelvic girdle

Discussion

21384.	Question : Acetabulum is located in
Answer» COLLAR BONE HIP bone shoulder bone thigh bone Solution :hip bone

Discussion

21385.	Question : Acetabulum
Answer» SOLUTION : At the point of fusion of ilium, ISCHIUM and pubis concavity is FORMED, called ACETABULUM. Femur bone of thigh REGION articulates with it.

Discussion

21386.	Question : Aceiospores of Puccinia are produced on
Answer» BERBERIS leaves Wheat leaves Mustard leaves Raphanus leaves Answer :A

Discussion

21387.	Question : Accumulation of K^(+)ions leads to
Answer» INCREASED turgidity closing of stomata exosmosis of WATER increased water POTENTIAL

Discussion

21388.	Question : Account for the following briefly : Herbaceous plants growing in well watered soils are found to wilt on a hotday.
Answer» Solution :Herbaceous plants growing in wellwatered SOILS are FOUND to wilt on a hot day. It is due to the fact that in such cases the rate of TRANSPIRATION during day-time EXCEEDS the rate of absorption of water by the roots. The cells therefore lose TURGIDITY. In the evening or during night, the stomata are constricted and the temperature is not high, therefore there is no loss of water through transpiration and the turgidity of the leaves is reacquiredand they stand out erect.

Discussion

21389.	Question : Account for the following briefly: Animals owe their existence to Chlorophyll.
Answer» SOLUTION :Animals derive their food from PLANTS and plants can prepare their food with the help of chlorophyll by the PROCESS of photosynthesis. HENCE, animals owe theirexistence to chlorophyil.

Discussion

21390.	Question :According to widely accepted "fluid mosaic model" cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statement is incorrect?
Answer» Proteins in cell membranes can travel WITHIN the lipid bilayer Proteins can remain confined within certain domains of the membrane Proteins can ALSO UNDERGO flip-flop movements in the lipid bilayer Many proteins remain COMPLETELY embedded within the lipid bilayer. Answer :C

Discussion

21391.	Question : According to unit membrane concept the plasma membrane has the following arrangement
Answer» PROTEIN and LIPID LAYERS intermingled protein-lipid-protein lipid-protein-lipid protein-lipid-lipid Answer :B

Discussion

21392.	Question : According to the fluid mosaic model of membrane structure,proteins of the membrane are :
Answer» SPREAD in a continuous layer over the inner and outer surfaces of the membrane confined to the HYDROPHOBIC CORE of the membrane randomly oriented in the membrane, with no FIXED inside-outside polarity embedded in a lipid BILAYER Solution :embedded in a lipid bilayer

Discussion

21393.	Question : According to the Central Pollution Control Board, particles that are responsible for causing great harm to human health are of diameter.
Answer» 2 . 50micrometers 5 micrometers 10 micrometers 7.5 micrometers Answer :A

Discussion

21394.	Question : According to the accepted concept of hormone action, if recptor molecules are removed from target organs, then the target organ will
Answer» CONTINUE to RESPOND to the hormone without andy DIFFERENCE not respond to the hormone continue to respond to the hormone but will require higher concentration Solution :Hormones recorgnise target organs by the presence of specirfic receptor molecules on the plasma MEMBRANE of target organs, if these receptor molecules are removed then a hormone will be unble to give any response.

Discussion

21395.	Question : According to sliding filament theory, which band/ zone does not change in width?
Answer» SOLUTION :A BANDS.

Discussion

21396.	Question :According to sandwitch model the thickness of each protein layer and the bilipid layer, respectively
Answer» 75 and `35 A^@` `35 and 75A^@` `35 and 20A^@` `20 and 35A^@` ANSWER :D

Discussion

21397.	Question : According to Robertson, the function of calciferous glands is to
Answer» NEUTRALIZE humic acid to excrete excess CALCIUM SALTS to digest proteins to digest amylose ANSWER :B

Discussion

21398.	Question : According to recent view,complete oxidation of 1 glucose molecule yields ……………..ATP.
Answer» 32 30 34 38 Answer :B

Discussion

21399.	Question : According to photosynthesis equation, how much solar energy consume when a plant to produce 180g glucose and 193g O_2
Answer» 67.72 KCAL 677.2 calories 677.2 kcal 686 calories Answer :C

Discussion

21400.	Question : According to recent concept the number of types of t RNA is equal to
Answer» No.of SENSE CODONS No.of NON sense codons TOTAL no. of triplet codons No. of TERMINATION codons Answer :A

Discussion

Explore topic-wise InterviewSolutions in .

Question : _____acts as a channel between the protoplasm of adjacent cells.

Question : Activity of notrogenase in nitrogen fixing micro-organisms can be seen when

Question : Active transport from outside to inside of molecules across a membrane requires :

Question :Which of the following is true about Active transport?

Question : Active transport:

Question : Active transport :

Question : Differentiate between: Active absorption through osmotic mechanism and Active absorption through non-osmotic mechanism.

Question : Active and passive absorption of minerals

Question : Activation of B-lymphocytes is done by

Question : Active absorption and passive absorption

Question :Actinomorphic flower exhibits

Question : Actinomycetes comes under ……………kingdom.

Question : Actin is present in thin filaments.

Question : Actin binding sites are located on

Question : Actin is present in thin filament

Question : Write true or false . If false, change the statement so that it becomes true.(a) actin is present inthin filament

Question : Actin is present in thin filament A.TrueB.False

Question : Actin binding sites lie on tail of myosin/head of myosin.

Question : Actin vinding sites are located on

Question : ACT4 stimulates melanin synthesis in Ans.( Melanocytes) 10. LH is also known as .............

Question : Acrosome of sperm is derived from

Question : Acromion is seen in.

Question : Acromion process is characteristacally found in the_______________of mammals.

Question : What is acromion process?

Question : Acromegaly is due to oversecretion of

Question : Acquired immunity is characterised by

Question :(a)Correct the statement : Imbibition is a special type of diffusion when water is absorbed byliving cell. (b)Correct the statement :Most of water flow in the roots occurs via symplast. (c) Correct the statement : Cells shrink in hypotonic solution and swell in hypertonic solution

Question : Acid hydrolases are found in:

Question : Acid hydrolases are found in :

Question : Acetylcholine is …………….released at the …………....

Question : Acetyl Co-A is formed from ……………….. and coenzyme A.

Question : Acetabulum is present in the ______girdle.

Question : Acetabulum is part of .....

Question : Acetabulum is located in

Question : Acetabulum

Question : Aceiospores of Puccinia are produced on

Question : Accumulation of K^(+)ions leads to

Question : Account for the following briefly : Herbaceous plants growing in well watered soils are found to wilt on a hotday.

Question : Account for the following briefly: Animals owe their existence to Chlorophyll.

Question :According to widely accepted "fluid mosaic model" cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statement is incorrect?

Question : According to unit membrane concept the plasma membrane has the following arrangement

Question : According to the fluid mosaic model of membrane structure,proteins of the membrane are :

Question : According to the Central Pollution Control Board, particles that are responsible for causing great harm to human health are of diameter.

Question : According to the accepted concept of hormone action, if recptor molecules are removed from target organs, then the target organ will

Question : According to sliding filament theory, which band/ zone does not change in width?

Question :According to sandwitch model the thickness of each protein layer and the bilipid layer, respectively

Question : According to Robertson, the function of calciferous glands is to

Question : According to recent view,complete oxidation of 1 glucose molecule yields ……………..ATP.

Question : According to photosynthesis equation, how much solar energy consume when a plant to produce 180g glucose and 193g O_2

Question : According to recent concept the number of types of t RNA is equal to