InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 20301. |
Question : Auxins fail to enhance the growth of intact plants. |
| Answer» Solution :Because the REQUIRED amount of auxins is ALREADY PRESENT in INTACT plant. | |
| 20302. |
Question : Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting. Write a line to explain the meaning of the following terms related to auxins. (a) auxin precursors (b) antiauxins (c) synthetic auxins |
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Answer» Solution :(a) Auxin precursors : The SUBSTANCES that PRODUCE the auxin are called auxin precursors. For example, tryptophan. Tryptophans is the auxin precursors. (B) Antiauxins : The substance that inhibit action of auxins e.g. P-chlorophenoxy isobutyric acid (PCIB), TIBA [Triodobenzoic acid] (c) Synthetic auxins : The artificially synthesised chemicals having auxin like property are called synthetic auxins. For example NAA (Naphthalene acetic acid) and 2, 4-D [2, 4-Dichlorophenoxyacetic acid] |
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| 20303. |
Question : Auxin was first isolated from ....... |
| Answer» Solution :Human urine | |
| 20304. |
Question : Auxin in plant means for |
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Answer» CELL elongation |
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| 20305. |
Question : Autonomic nervous and viterous humour are divided by |
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Answer» REFLEX actions |
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| 20306. |
Question : Australian Acacia, Turmeric, Zaminkhand, Nerium, Cacti, Pea, Pistia, Chrysanthemum, Nepenthis, Pine apple and garlic, out of these how many of them exhibit leaf modifications |
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Answer» 6 |
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| 20308. |
Question : Attempt titrating an amino acid against a weak base and discover the number of dissociating (ionizable) functional groups in the amino acid. |
| Answer» Solution :On titrating against a weak base the amino ACIDS ionizes into -`NH_2C` amino GROUPS -COOH (CARBOXYL group). | |
| 20309. |
Question : Attacus ricini produces ........... silk. |
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Answer» Muga |
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| 20310. |
Question : Atrium and ventricles |
Answer» SOLUTION :
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| 20312. |
Question : ATPase of the type muscle is located in |
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Answer» actinin `ATPoverset("Myosin Atpase")underset(Ca^(2+), Mg^(2+))(rarr)ADP+P i+"Energy"` |
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| 20313. |
Question : ATPaseenzyme consists of two parts. What are those parts ? How are they arranged in the thylakoid membrane ? Conformational change occur in which part of the enzyme ? |
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Answer» Solution :`F_(1)` headlike part (It is a part having protein) located towards STOMA in PERIMETER region and has space to synthesize ATP by connecting ADP + pi. (b) `F_(0)` is a protein located inside the membrane. It functions as a pathway to PASS the proton. Arrangement : `F_(0)` part is arranged inside theThylakoid mambrane. `F_(1)` part is located towards stroma of chloroplast of ATPase. Changes : Definite changes take PLACE in `F_(1)` part of ATp is formed by connecting ADP + Pi through ATpase. |
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| 20315. |
Question : ATPase : |
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Answer» Solution :Lcation : In innermembrane of MITOCHONDRIA Function : As a PATHWAY for TRANPORT of protein for ATPformation. |
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| 20316. |
Question : ATP produced during glycolysisis a result ofsubstrate level phosphorylation . Explain. |
Answer» Solution :STROMA basedphosphorylation is such AMETABOLIC process that forms either ATP orGTP. Whicheither attacheswith ADP or GDP with phosphate and are formed. Matric based phosphorylation In Glycolysismatrics based phosphorylation takes place in two steps. (a)2 molecules of 1, 3biphosphoglycericacid combine with2 molecules of ADP then, 1, 3 biphosphoglyceric acid + 2ADP `underset(Mg^(+2)) overset("Phospho transferase ") to ` 2phosphoglyceric acid + 2ATP (B) 2 molecules of phosphoenolpyruvic acid combine with 2 molecules of ADP then, 2 molecules of pyruvicacid and 2 molecules ofATPare formed 2 PHOSPHOENOL pyruvicacid + 2ADP `underset(Mg^(+2))to overset ("Pyruvate kinase ") to ` 2 pyruvicacid + 2ATP |
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| 20318. |
Question : What is an universal energy currency of the cell? |
Answer» Solution :Respiration is responsible for generation of ATP. The discovery of ATP was made by Karl Lohman (1929). ATP is a nucleotide CONSISTING of a base-adenine, a pentose sugar - RIBOSE and three phosphate GROUPS. Out of these phosphate groups the last two are attached by high energy rich bonds (figure). On HYDROLYSIS, it releases energy (7.3 K cal or 30.6 KJ/ATP) and it is found in all living cells and hence it is called universal energy currency of the cell. ATP is an instant source of energy within the cell. The energy contained in ATP is used in synthesis carbohydrates, proteins and lipids. The energy transformation CONCEPT was established by Lipman. (1941).
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| 20319. |
Question : ATP is a |
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Answer» NUCLEOTIDE |
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| 20320. |
Question : ATP can be formed in the photosynthesizing plant cells by: |
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Answer» Photophosphorylation |
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| 20321. |
Question : ATP ase enzyme needed for muscle contraction of located in |
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Answer» ACTIN |
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| 20322. |
Question : ATPase enzyme needed for muscle contraction is located in |
| Answer» Solution :myosin | |
| 20323. |
Question : ATP ase enzyme needed for muscle contraction is located in |
| Answer» Answer :C | |
| 20324. |
Question :ATP : |
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Answer» |
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| 20325. |
Question : Atoms needed in very small amounts function mainly as ………………………………… of enzymatic reactions. |
| Answer» SOLUTION :COFACTORS | |
| 20326. |
Question : Atmospheric input is negligible in |
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Answer» CARBON cycle |
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| 20327. |
Question : Atlas and axis are a part of: |
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Answer» thoracic |
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| 20328. |
Question : Atheroma may partially block the ............ and reduce the blood supply to the heart. |
| Answer» SOLUTION :CORONARY ARTERY. | |
| 20329. |
Question : water soluble pigments found in plant cell vacuoles are |
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Answer» XANTHOPHYLLS |
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| 20330. |
Question : At, which temperature do C_(3)plants work best? |
| Answer» SOLUTION :TEMPERATURE of APP. `25^(@) C.` | |
| 20331. |
Question : Atactostele is present in |
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Answer» DICOT STEM |
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| 20332. |
Question : At which step of respiration, hydrogen of NADH_(2) is used ? |
| Answer» Solution :The HYDROGEN atoms accepted by `NADH_(2)` during glycolysis are introduced to route I of ETS. In this route 3 ATP MOLECULES are produced. | |
| 20333. |
Question : At which stage, the homologous chromosomes separate due to repulsion, but are yet held by chiasmata? |
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Answer» a) Pachytene |
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| 20334. |
Question : At which stage of mitosis , chromatids separated and passes to different poles |
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Answer» Prophase |
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| 20335. |
Question : At which stage of mitosis chromatids separate and passes to different poles ? |
| Answer» Answer :C | |
| 20336. |
Question : At which stage of meiosis does the genetic constitution of gametes is finally decided |
| Answer» Answer :D | |
| 20337. |
Question :At which stage of meiosis does the genetic constitution of gametes is finally decided |
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Answer» METAPHASE I |
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| 20338. |
Question : At which of the following stages of cell cycle proteins and microtubules, required for mitosis, are synthesized ? |
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Answer» `G_2` PHASE |
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| 20339. |
Question :At which stage of HIV infection does one usually show symptoms of AIDS? |
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Answer» When the infecting retrovirus enters host cells |
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| 20340. |
Question :At which pH lysosomal enzymes remain active |
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Answer» PH - 5 |
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| 20342. |
Question : At what stage of endosperm development, you will observe nuclear or cellular type of endosperm? |
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Answer» When DIVISIONS start in embryo |
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| 20343. |
Question :At what stage of cell cycle does DNA synthesis take place ? |
| Answer» Solution :DNA is SYNTHESIZED during S (synthetic PHASE) of INTERPHASE of CELL. | |
| 20344. |
Question : At the venous end of the capillary bed, the osmotic pressure is |
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Answer» GREATER than the hydrostatic pressure |
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| 20345. |
Question : At Tuticorin region, the pearl oyster diving people have some changes in their blood. State the reasons for it. |
| Answer» Solution :When a person descends deep into the sea, the pressure in the surrounding water increases which causes the lungs to DECREASE in volume. This decrease in volume increases the partial pressure of the gases within the lungs. This effect can be beneficial, because it tends to drive additional oxygen into the circulation, but this BENEFIT also has a risk, the increased pressure can also drive nitrogen gas into the circulation. This increase in blood nitrogen content can lead to a condition called nitrogen narcosis. When the diver ascends to the surface too quickly a condition called ''bends'' or decompression sickness occurs and nitrogen comes out of solution while still in the blood FORMING bubbles, Small bubbles in the blood are not harmful, but large bubbles can lodge in small capillaries, blocking blood flow or can PRESS on nerve endings. Decompression sickness is associated with pain in joints and museles and neurological PROBLEMS including stroke. The risk of nitrogen narcosis and bends is common in scuba divers. | |
| 20346. |
Question : At the venous end of the capillary bed, the osmotic pressure is ............ |
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Answer» Greater than the hydrostatic PRESSURE |
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| 20347. |
Question : At the time of germination of zygospore in Spirogyra,how many haploid nucleus/nuclei is/are functional or on germination, each zygospore of Spirogyra produces how many plants ? |
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Answer» 3 |
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| 20348. |
Question : At the time of heavy rain, minerals in upper layers of the soil move downward by a process known as: |
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Answer» WEATHERING |
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| 20349. |
Question : At the end of which stage does cell enter mitosis ? |
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Answer» `G_1`- PHASE |
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| 20350. |
Question : At the metaphase plate during metaphase I of meiosis, there are |
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Answer» SINGLE chromosomes |
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