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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.
| 451. |
What is the role of second messenger in the mechanism of protein hormone action |
| Answer» It fxns as a medium or the passage of chemical +nt in hormone ??? | |
| 452. |
Write the location of ultra filteration |
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Answer» It begins in the nephron present in kidney. Glomerular capsule ( Bowman\'s capsule).. I think it is bowmans capsule . |
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| 453. |
Impulse transmission |
| Answer» A microscopic gap between a pair of adjacent neurons over which nerve impulses pass when going from one neuron to the next is called a synapse. Synapse between two neurons acts as a one way valve which allows electrical impulses to pass in one direction only. This happens as follows: When an electrical impulse coming from the receptor reaches the end of the axon of sensory neuron, then the electrical impulse releases tiny amount of a chemical substance called neuro transmitter substance into the synapse between two adjacent neurons. This substance crosses the synapse and starts a similar electrical impulse in the dendrite of the next neuron. In this way, the electrical impulses passes from one neuron to the next across the synapse. | |
| 454. |
What is the chief producer of ocean |
| Answer» The primary producers of the ocean are phytoplankton, that is at the base of the oceanic food web. Phytoplankton includes the diatoms and dino flagellates. Among the most abundant are the diatoms. They use the pigment chlorophyll to convert sunlight into food. | |
| 455. |
Difference between chordata and non Christian |
| Answer» Chordates :\tNotocord is present at least in some stages of development.\tCentral nervous system is dorsal, hollow, single and non-ganglionated.\tGill slits present on lateral side of pharynx in sum stages or throughout life.\tTail is present in some stages and throughout life\tHeart is ventral.\tHaemoglobin is present in RBCs.Non-Chordates :\tNoto chord is absent.\tCentral nervous system is ventral, solid, double and gangliolated.\tGill slits are absent.\tTail generally absent.\tHeart is dorsal.\tIt is present in plasma. | |
| 456. |
Which is sence organ that sence light in cockroach |
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Answer» *Sense Antenna |
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| 457. |
What is g.f.r |
| Answer» Gfr is glomerular filtration rate | |
| 458. |
Define Mechanis of Hearing |
| Answer» The\xa0mechanism of hearing. Sound waves enter the outer ear and travel through the external auditory canal until they reach the tympanic membrane, causing the membrane and the attached chain of auditory ossicles to vibrate.\xa0Sound transfers into the\xa0ear\xa0canal and causes the eardrum to move. The eardrum will vibrate with vibrates with the different sounds. These sound vibrations make their way through the ossicles to the cochlea. Sound vibrations make the fluid in the cochlea travel like ocean waves. | |
| 459. |
Describe the Cranial and facial bones with diagram. |
| Answer» The bones of the\xa0skull\xa0provide\xa0protection\xa0for the brain and the organs of vision, taste, hearing, equilibrium, and smell. The bones also provide attachment for\xa0muscles\xa0that move the\xa0head\xa0and control facial expressions and\xa0chewing.\xa0Cranial bone: Part of the top portion of the skull which protects the brain. The\xa0bones\xa0of the\xa0cranium\xa0include the frontal, parietal, occipital, temporal, sphenoid, and ethmoid\xa0bones.\xa0The primary bones of the face are the\xa0mandible,\xa0maxilla,\xa0frontal bone,\xa0nasal bones, and\xa0zygoma. Facial bone anatomy is complex, yet elegant, in its suitability to serve a multitude of functions. | |
| 460. |
name that to algae from which agar is obtained |
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Answer» Red algae Gelidium and Gracilaria |
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| 461. |
Describe the bacteria which lives in extreme conditions |
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Answer» Its archaebacteria Archie bacteria it has phytanyl lips chain branch in the cell membrane also it has pseudo Muriel in its cell wall also has introns in its dna then it is of three types methanogens halophiles themoacidophiles |
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| 462. |
Describe counter current mechanism |
| Answer» A\xa0countercurrent mechanism system\xa0is a\xa0mechanism\xa0that expends energy to create a concentration gradient. ... For example, it can refer to the process that is underlying the process of urine concentration, that is, the production of hyperosmotic urine by the mammalian kidney.\xa0The\xa0counter-current\xa0multiplier or the\xa0countercurrent mechanism\xa0is used to concentrate urine in the kidneys by the nephrons of the human excretory\xa0system. The nephrons involved in the formation of concentrated urine extend all the way from the cortex of the kidney to the medulla and are accompanied by vasa recta. | |
| 463. |
Difference between poriens and aquaporiens? |
| Answer» Aquaporins are a type of porin which transport water to cell. Poring are actually transmembrane proteins which help in the facillitated transport of hydrophilic and charged ions or solute particles | |
| 464. |
What is transaminase .explain its fxn ? |
| Answer» Transaminases\xa0or\xa0aminotransferases\xa0are enzymes that catalyze a transamination reaction between an amino acid\xa0and\xa0an α-keto acid. They are important\xa0in\xa0the synthesis of amino acids, which form proteins.\xa0The liver has\xa0transaminases\xa0to synthesize and break down amino acids and to convert energy storage molecules. The concentrations of these\xa0transaminases\xa0in the serum (the non-cellular portion of blood) are normally low.\xa0Transaminitis, sometimes called hypertransaminasemia, refers to having high\xa0levels\xa0of certain liver enzymes called\xa0transaminases. When you have too many enzymes in your liver, they start to move into your blood stream. | |
| 465. |
Why are xylem and pheolem called complex tisses |
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Answer» Your welcome ... Priyanka ??? Because they are made up of more than one type of cells..?? |
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| 466. |
Role of pinial gland |
| Answer» The primary function of the pineal gland is to produce melatonin. Melatonin has various functions in the central nervous system, the most important of which is to help modulate sleep patterns. Melatonin production is stimulated by darkness and inhibited by light. | |
| 467. |
What are the identifying feature of straited muscles? |
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Answer» Multinucleated and voluntary action They consist of alternate light and dark bends called striation and hence striated. Presence of Strips *striated |
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| 468. |
What do you mean by photorespiration how c4 plants are adapted to prevent photorespiration |
| Answer» Photorespiration is the phenomenon only in C3 plants where RUBP combines with oxygen tl form phosphoglycerate aling with the main product that is phosphoglyceric acid.the formation of phosphoglycerate decreases the amount of PGA.its a totally wasteful process because nothing is formed and even 1 atp is utilized.C4 plants have an inbuilt machenism to control this.also there is much CO2 concentration in the intercellular spacea which prevents the RUBO in bundle sheat cells to form any other product other than PGA | |
| 469. |
What is diamorpic chloroplast? |
| Answer» The outer sheath of cells is known as the mesophyll sheath and it contains chloroplasts similar to those of C3 plants in that they have grana. They are, however, different in that they do not normally contain starch grains. Not all C4 plants show such structural dimorphism of their chloroplasts. | |
| 470. |
how does \'rubisco\' act as carboxylase oxygenase respectively ? |
| Answer» The increase in CO2 ensures that the enzyme RuBisCo does not act as an oxygenase, but as a carboxylase. This prevents photorespiration and increases the rate of photosynthesis. Thus, C4 plants are highly productive.The enzyme RuBisCo is absent from the mesophyll cells of C4 plants. | |
| 471. |
What is hydroponics? |
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Answer» Not only in nutrient sol. but also in presence of air and water which is added by funnel and aerating tube Not a definite ans.??? Thanks ???? It means growing of plant in nutrient solution . It is soiless growing of plant It\'s hydrophonics okay |
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| 472. |
What is caesin? |
| Answer» These proteins are commonly found in mammalian milk, comprising c. 80% of the proteins in cow\'s milk and between . | |
| 473. |
Define cardiac cycle |
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Answer» Not joins, it fuses Simple one!!! -The circulation of blood time a heart is k/a cardiac cycle A male and female cells that joins with a cell of the opposite *** to form a zygote is called gametes Yaar gametskya hota hai The sequential events in the heart which are repeated cyclically is called cardiac cycle and it consists of systole (contraction) and diastole (relaxation) of both the atria and ventricles. The duration of a cardiac cycle is 0.8 seconds. Periods of cardiac cycle are atrial systole (0.1 second), ventricular systole (0.3 second) and complete cardiac diastole (0.4 second). |
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| 474. |
What is chylomicrons |
| Answer» The protein coated small fat molecules are called chylomicrons | |
| 475. |
What is the term metagenisis |
| Answer» Two form[variation] in single life | |
| 476. |
Name the order which includes solanaceae And convolvulaceae |
| Answer» Order polymoniales | |
| 477. |
Why all vertebrates are chordates but all chordates are not vertebrates |
| Answer» Ncert ch4 last 3rd page 4th para.Also explain other chordate to impress teacher | |
| 478. |
Why arthropoda called the largest phylum |
| Answer» Bcoz 1/3th of animal kingdom is of arthropoda | |
| 479. |
Write down the ecological importance of gymnosperms |
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Answer» 1. Used to make medicince2. Used to detect dust 3.used to make cosmatics4.used in labs Ncert last para of last second page of ch3 |
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| 480. |
What you mean by satiety? |
| Answer» Satiety\xa0is\xa0defined\xa0as the state of inhibition over further eating that follows the end of an eating episode and arises from the consequences of food ingestion.\xa0Satiety\xa0is the feeling of fullness and the suppression of hunger for a period of time after a\xa0meal. • The feeling of\xa0satiety\xa0occurs due to a number of bodily signals that begin when a\xa0food\xa0or drink is consumed and continue as it enters the gut and is digested and absorbed. • | |
| 481. |
Shape of WBCs and tracheid ? |
| Answer» WBCs\xa0are irregular in\xa0shape, but have a nucleus and an outer buffer coat. 120 days. There is only one type of RBCs found in the blood. There are various types of\xa0WBCs\xa0with distinct functions in the blood:neutrophils, T lymphocytes, B lymphocytes (plasma cell) monocytes (macrophage), eosinophils, basophils.Tracheid\xa0consists\xa0of a single elongated cell with pointed ends and a secondary, cellulosic wall thickened with lignin (a chemical binding substance) containing numerous pits but having no perforations in the primary cell wall. | |
| 482. |
What are myeoplasmas? |
| Answer» *mycoplasma | |
| 483. |
Urine firmation |
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Answer» *formation 1st step -Filtration of blood by glomerulus2nd step- Reabsorption by renal tubules 3rd step- Tubular cells secretes H^+ , K^+ ammonia into filtrate ☺☺☺ |
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| 484. |
Explain the chemical event that takes place in forming a blood clot to see the wound |
| Answer» Hemostasis involves three basic\xa0steps: vascular spasm, the\xa0formation\xa0of a platelet plug, and coagulation, in which\xa0clotting\xa0factors promote the\xa0formation\xa0of a fibrin\xa0clot. Fibrinolysis is the process in which a\xa0clot\xa0is degraded in a healing vessel. Anticoagulants are substances that oppose coagulation. | |
| 485. |
Mechnism of membrane linked Atp synthesis in plants during respiration |
| Answer» The\xa0mechanism\xa0of\xa0ATP synthesis\xa0appears to be as follows.\xa0During\xa0the transfer of hydrogen atoms from FMNH2\xa0or FADH2\xa0to oxygen, protons (H+\xa0ions) are pumped across the crista from the inside of the mitochondrion to the outside.\xa0This complex forms a specific proton pore in the\xa0membrane.\xa0Depending on the type of organism, cells transfer energy and generate ATP by photophosphorylation, substrate-level phosphorylation, and/or oxidative phosphorylation. Phosphorylation refers to the attachment of a\xa0phosphate\xa0group to a molecule. | |
| 486. |
Mechanism linked ATP synthesis in plants during respiration |
| Answer» In\xa0plants,\xa0ATP\xa0synthase is also present in chloroplasts (CF1FO-ATP\xa0synthase). The enzyme is integrated into thylakoid membrane; the CF1-part sticks into stroma, where dark reactions of photosynthesis (also called the light-independent reactions or the Calvin cycle) and\xa0ATP synthesis take place. The\xa0mechanism\xa0of\xa0ATP synthesis\xa0appears to be as follows.\xa0During\xa0the transfer of hydrogen atoms from FMNH2\xa0or FADH2\xa0to oxygen, protons (H+\xa0ions) are pumped across the crista from the inside of the mitochondrion to the outside. ... Attached to the crista is a complex enzyme (ATP\xa0synthetase) that binds\xa0ATP, ADP, and Pi. | |
| 487. |
Define plasticity |
| Answer» Plasticity is the property of body by virte of which it does not oppose the deforming force aplied and tge body is deformed permanently. ........?it nay help u. | |
| 488. |
Monocot stems |
| Answer» The monocot stem has scattered vascular bundles and their arrangement is conjoint and closed. Moreover, water containing-cavities are present within the vascular bundles.In a monocot stem, each vascular bundle is surrounded by a sclerenchymatous bundle sheath and parenchymatous ground tissue. | |
| 489. |
Difference between the key and look model and induced fit modal |
| Answer» In this analogy, the\xa0lock\xa0is the enzyme and the\xa0key\xa0is the substrate. Only the correctly sized\xa0key\xa0(substrate) fits into the\xa0key\xa0hole (active site) of the\xa0lock\xa0(enzyme). The\xa0induced-fit\xa0theory assumes that the substrate plays a role in determining the final shape of the enzyme and that the enzyme is partially flexible.\xa0The\xa0induced fit model\xa0describes the formation of the E-S complex as a result of the interaction between the substrate and a flexible active site. The substrate produces changes in the conformation on the enzyme aligning properly the groups in the enzyme. It allows\xa0better\xa0binding and catalytic effects. | |
| 490. |
Chapter - 8,9,10 me important question kya kya hPlz btaa do,☺️☺️☺️ |
| Answer» NCERT Exercise given Question/Answer and the questions present inside the chapter | |
| 491. |
What is main function of teeth. About for chewing |
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Answer» Teeth is main function surface area increase the food. And in this process of chewing food , slivery gland help the most by secreting saluva for making its paste or converts solid food material to liquid form.....☺ Yes, teeth\'s main function is to chew food properly and make its paste by which it can disgest properly.. |
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| 492. |
Why do we called our heart myogenic? |
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Answer» In the human heart, contraction is initiated by a special modified heart muscle known as sinoatrial node. Since the heart beat is initiated by the SA node and the impulse of contraction originates in the heart itself, the human heart is termed myogenic. The hearts of vertebrates and molluscs are also myogenic.... Because SAN is present on the upper right corner of right atria which regulate our heart without any help of external stimulus Because the contractions and relaxation in our heart is controlled by muscles and myogenic means generated by muscles Bcz SA node present in right atrium which controll contractions of our ?.??? |
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| 493. |
Difference between racemose and cymose inflorescence |
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Answer» I will provide best answer Racemose = the main axis continuos grow and flower occur laterally- it is in acropetal manner Cymose= the main axis terminater into floral structure- it is in basipetal manner |
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| 494. |
Important question of biology |
| Answer» Read all chapter ncert questions and book.?? | |
| 495. |
Why are proteses release in inactive form |
| Answer» Because when proteses release in active form they digest the muscular wall of alimentry canal | |
| 496. |
How is floret different from flowerr |
| Answer» Floret is a small part of flower which makes the eatable part.???? | |
| 497. |
Mechanism of concentration of fluid in easy language please tell? |
| Answer» | |
| 498. |
What is DPD of a cell during guttation |
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Answer» Right answer is 0 The DPD in guttation will have negative DPD is diffusion pressure deficit which is equal to difference of OP-WP or OP-TP ,DPD=OP-WP or OP-TPWhere , OP= Osmotic Pressure,WP= Wall Pressure,TP= Turgor Pressure. DPD can be defined as the amount by which diffusion pressure of a solution is less than its pure solvent.& In case of DPD the water will move from low DPD to high DPD |
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| 499. |
What is the long distance removal of water |
| Answer» | |
| 500. |
Plysmolysis occurs in plants cell but not in animals explain |
| Answer» Animal cell do no have cell wall | |