InterviewSolution
Saved Bookmarks
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.
| 701. |
Normal human blood pressure is 80/120 or 120/80 |
| Answer» 120/80 | |
| 702. |
Spinal cord originates from where? |
| Answer» From brain to whole body | |
| 703. |
What type of teeth are absent in case of baby? |
| Answer» Baby have 20 teeth there is an absence of bicuspid / premolar teeth | |
| 704. |
Action of bile juice upon fat is known as? |
| Answer» Emulsification | |
| 705. |
what is meant by z scheme of electron transport system in photosynthesis |
| Answer» Non cyclic photophasparylation | |
| 706. |
father of biology? |
|
Answer» Aristotle B |
|
| 707. |
what is pteridophytes? |
| Answer» According to biology.pteridophytes are those plants which have vascular bundles xylem and phelom | |
| 708. |
Diatomaceous earth formed by deposition of silica from the body of the diatom is hard or soft |
| Answer» It is soft | |
| 709. |
Name 3 oviparous mammalia |
| Answer» Amongs mammals the monotremes , some species of echidna and the platypus are the oviparous mammlia | |
| 710. |
What is the mode of nutrition of the thermoacidophiles (archaebacteria) |
| Answer» Thermoacidophiles(archaebacteria)gets their nutirions from absoption,from the process of photosyntheses,and from the egestion so we can say that they use autrotopihic mode of nutition | |
| 711. |
MYCORRHIZA ASSOSIATION.......i m just little bit confused??? |
| Answer» Lichens | |
| 712. |
What is crick adapter molecule?????? |
| Answer» Crick was an outspoken atheist, but his ability to collate data from multiple sources into a coherent, and often accurate, theory could seem at times to be the result of divine inspiration. It was Crick who confirmed the triplet code of DNA, theorized the existence of an adapter molecule (tRNA), and proposed the central dogma of molecular biology, that information travels from DNA to RNA to protein. | |
| 713. |
Why sucrose is non reducing sugar |
| Answer» As sucrose do not have OH group attached with the anomeric carbon so it can not reduce other compound | |
| 714. |
What is co-dominant character ? |
| Answer» The trait which is expressed in a phenotype is called dominant trait and the suppressed one is called recessive trait. Incomplete dominance is a type of dominance where a trait incompletely dominates over the other and results in an intermediate progeny.Co-dominance is the type of dominance where the offspring show similarity to both the parents and it is due to the blending of alleles. | |
| 715. |
Describe functions of Hypothalamus and pitutary gland ?? |
| Answer» Hypothalamus sends neural signals to pitutary gland so that it can master and ckntrol the release of hormonrs from other glands...For eg.gonadotrophin stimulating hormone is relesed by hypothalamus and is send to pitutary so that it can stimulate the release of hormone gonadotrophin.. | |
| 716. |
Do echinoderms have brain and heart |
|
Answer» They don\'t have hearts and also central brain.. No echinoderms do not have brain and heart |
|
| 717. |
Name 4 elements , whose deficiency causes necrosis |
| Answer» Copper , magnesium, potassium and calcium. | |
| 718. |
Which chapters r most important in bio for board exams...?? |
|
Answer» Thanks Unit 3 ,4 and 5 are very important |
|
| 719. |
Discribe the photosynthesis in higher plants |
| Answer» Photosynthesis in higher plants involves the following processes:\tLight Reaction\tDark ReactionLight Reaction\tThis phenomenon occurs in the presence of light.\tThe pigment absorbs light and produces energy in the form of ATP.\tThe process involves- absorption of light, water splitting, the release of oxygen, and formation of ATP and NADPH.\tThe protein-bound pigment molecules form the light-harvesting complexes present within two photosystems- PS-I and PS-II. Each photosystem has a reaction centre consisting of chlorophyll a molecule, and antennae containing accessory pigments.\tThe reaction centre for PS-I is P-700 because the absorption peak for chlorophyll a is at 700 nm while that for PS-II is P-680 because the absorption peak for chlorophyll a is at 680 nm.PhotophosphorylationThe formation of ATP in the presence of sunlight is called photophosphorylation. It is of two types:\tNon-cyclic photophosphorylation\tCyclic photophosphorylationNon-cyclic Photophosphorylation\tPS-II absorbs light at a wavelength of 680 nm and causes excitation in the electrons. These excited electrons are accepted by an electron acceptor and transferred to the electron transport system.\tThe electrons from the electron transport system are transferred to the PS-I. At the same time, the electrons at PS-I receive a wavelength of 700 nm and get excited.\tAn electron from the electron acceptor is added to NADP+, which is then reduced to NADPH+ H+.\tThe electrons lost by PS-II does not return to it and hence named non-cyclic photophosphorylation.\tIn this, both the photosystems are involved.Cyclic Photophosphorylation\tIn cyclic photophosphorylation, only PS-I is involved.\tThe electrons circulate within the photosystem which results in a cyclic flow of electrons.\tThis only forms ATP and not NADPH+ H+.\xa0Water SplittingThe light-dependent splitting of water is called photolysis. This process is associated with PS-II in which manganese and chlorine play an important role. The electrons lost from P680 are replaced by the electrons formed in this process. A molecule of water splits to release oxygen upon the absorption of light by P680.Dark ReactionThis process occurs in the absence of light in the stroma of the chloroplasts.\xa0The following cycles are involved in the process:Calvin Cycle (C3 Cycle)This cycle involves the following steps:\tCarbon-fixation: Ribulose-1, 5-bisphosphate combines with carbon dioxide to fix it to a 3 carbon compound 3-phosphoglyceric acid. The enzyme RuBisCO is involved in the process.\tReduction: 2 molecules of ATP and NADPH fixes one molecule of carbon dioxide to form glyceraldehyde-3-phosphate.\tRegeneration: Some glyceraldehyde-3-phosphate molecules undergo a series of reactions to form glucose while the RuBP regenerates to continue the cycle. | |
| 720. |
What is the role of Mg2+ ion in conversation of 2 pyruvic acid to acetyl coA |
| Answer» In the conversion of\xa0pyruvate to acetyl CoA, each\xa0pyruvate\xa0molecule loses one carbon atom with the release of carbon dioxide. During the breakdown of\xa0pyruvate, electrons are transferred to NAD+ to produce NADH, which will be used by the cell to produce ATP.\xa0ATP\xa0(adenosine triphosphate), the main source of energy in cells, must bind to a\xa0magnesium\xa0ion in order to be biologically active. ... As such,\xa0magnesium\xa0plays a\xa0role\xa0in the stability of all polyphosphate compounds in the cells, including those associated with the synthesis of DNA and RNA. | |
| 721. |
Phragmoplast or vesicles are the precursors of ____???? |
| Answer» Phragmoplast or vesicles are the percursors of the new cell wall | |
| 722. |
Name the multicelled sterile hairs present between antheridium? |
| Answer» yarr one word may clean bold ker re hoo.. ?... paraphyses is the answer.. | |
| 723. |
Who is the father of indian pteridology? And who gave the term pterodophyta? |
| Answer» S. s bir is the father of Indian pteridology... nd I think linnaeus gave the term... not sure about second one.. ? | |
| 724. |
Define endocrine |
|
Answer» A gland which are ductless and directly pour their hormones in blood It is glands |
|
| 725. |
Briefly explain the mechanism of action of FSH |
| Answer» No need | |
| 726. |
Describe the nature of gynocium in each of them-◆ALLIUM CEPA(onion)◆PISUM SATIVUM(pea) |
| Answer» In relation to their insertion on thalamus?? | |
| 727. |
How tripsinogen is convert into active form |
| Answer» Once trypsinogen and chymotrypsinogen are released into the lumen of the small intestine, they must be converted into their active forms in order to digest proteins. Trypsinogen is activated by the enzyme enterokinase, which is embedded in the intestinal mucosa. | |
| 728. |
What is yellow spot |
|
Answer» Its macula lutea. A small oval, yellowish area of the retina lying exactly opposite the centre of the cornea is named the macula luteavor yellow spot. |
|
| 729. |
Why blood flow faster in hunam body |
| Answer» Nerves are thin | |
| 730. |
Explain counter current mechanism. |
|
Answer» Counter current multiplyer & counter current exchanger Thank u so much. The counter current mechanism operating inside the kidney is the main adaptation for the conservation of water. There are two counter current mechanisms inside the kidneys. They are Henle’s loop and vasa rectae.Henle’s loop is a U-shaped part of the nephron. Blood flows in the two limbs of the tube in opposite directions and this gives rise to counter currents. The Vasa recta is an efferent arteriole, which forms a capillary network around the tubules inside the renal medulla. It runs parallel to |
|
| 731. |
What is prophase of m phase |
| Answer» The first\xa0phase\xa0of mitosis within\xa0M phase\xa0is called\xa0prophase. It follows G2, the final\xa0phase\xa0of interphase. A cell entering\xa0M phase\xa0manifests a number of physicsl signs. ... Chromosome condensation is visible through a microscope and is required for subsequent chromosome separation during later stages of mitosis.\xa0During\xa0the mitotic (M)\xa0phase, the cell divides its copied DNA and cytoplasm to make two new cells.\xa0M phase\xa0involves two distinct division-related processes: mitosis and cytokinesis. ... Mitosis takes place in four stages: prophase (sometimes divided into early prophase and prometaphase), metaphase, anaphase, and telophase. | |
| 732. |
Which enzymes produce by stomach |
| Answer» Pepsinogen and gastric lipase are produced in the stomach. Pepsinogen is the precursor molecule of very potent protein digesting enzyme pepsin. | |
| 733. |
What is the real meaning of site of photosynthesis |
| Answer» The process of photosynthesis takes place in the green leaves of a plant. The carbon dioxide gas required for making food is taken by the plant leaves from the air which enters the leaves through tiny pores called stomata. Water required for making food is taken from the soil which is transported to the leaves from the soil through the roots and the stem. The sunlight provides energy required to carry out the chemical reactions involved in the preparation of food. The green pigment called chlorophyll absorbs sunlight energy. The photosynthesis takes place in three steps:(i) Absorption of sunlight energy by chlorophyll.(ii) Conversion of light energy into chemical energy and splitting of water into hydrogen and oxygen by light energy.(iii) Reduction of carbon dioxide by hydrogen to form carbohydrates like glucose by utilising the chemical energy. | |
| 734. |
Epithelium tissue and its types? |
| Answer» \tEpithelial Tissue: It is the simplest tissue and protective in nature. The cells of this tissue are tightly packed and they form a continuous sheet. They contain a very little or no intercellular space. It covers most organs and cavities within the body. The skin, the lining of the mouth, the lining of blood vessels, lung alveoli and kidney tubules are all made of epithelial tissue. Anything entering or leaving the body crosses at least one layer of epithelium. As a result, the permeability of the cells of various epithelia plays an important role in regulating the exchange of materials between the body and the external environment and also between different parts of the body. All the epithelium is usually separated from the underlying tissue by an extracellular fibrous basement membrane.\xa0\xa0\tEpithelium typeCharacteristicsShape of cellsFunctionSquamousIt is made up of thin, flat and irregular-shaped cells. It forms the delicate lining of cavities (mouth, oesophagus, nose, etc.) and blood vessels. \xa0\xa0It protects the underlying parts of body from mechanical injury, entry of germs, chemicals and drying. \xa0CuboidalIt consists of cube-like cells. These are found in kidney tubules, thyroid vesicles and in glands.\xa0It helps in absorption, secretion and excretion. It also provides mechanical support.ColumnarIt consists of cells which are taller than broader i.e. pillar-like. It forms the lining of stomach, small intestine and colon.\xa0Its main function includes absorption and secretion.CiliatedThey are cubical or columnar cells with cilia. These are found in sperm ducts and line the trachea, bronchi, kidney tubules and oviducts.\xa0The rhythmic, concerted beating of the cilia moves solid particles in one direction through the ducts.GlandularThe columnar epithelium is modified to form glands which secrete chemicals.\xa0Its main function is secretion.\t | |
| 735. |
Explain competitive inhibition along with an example... |
|
Answer» Ex - glutaric acid Breaking enzyme action through blocking its active sites is competitive inhibition |
|
| 736. |
Describe the mechanism of muscle contraction |
| Answer» Muscles are the structures which in coordination with bones bring about movement in an organ. Muscle contraction is clearly explained by sliding-filament theory. Muscles are made up of 2 types of proteins namely Actin and Myosin filaments.\t\xa0Muscle starts to contract when it receives information from motor neurons.\t\xa0Neuromuscular junctions are formed by the junctions between motor neuron and sarcolemma of individual muscle fibre.\t\xa0As the neural signal reaches neuro-muscular junction, acetyl choline is released at this place.\t\xa0Acetyl choline causes an action potential in the sarcolemma and releases calcium ions in the sarcoplasm.\t\xa0Calcium ions bind to the troponin of the actin and bring a change in its structure. This causes a movement in tropomyosin.\t\xa0This structural change exposes myosin binding sites on actin filaments. Myosin binds to actin forming a cross bridge.\t\xa0These cross bridges pull the attached actin to the centre of the A band. Z-line is also pulled inwards. This causes shortening of sarcomere which is termed as muscle contraction.\t\xa0During contraction, I bands are reduced, A bands retain their length. Actin and myosin filaments slide over one another during contraction.\t\xa0Myosin releases ADP and pi and returns to its original state. New ATP binds to myosin head and the cross bridge is broken.\t\xa0Myosin head hydrolyses ATP to form a cross bridge.\t\xa0These events are repeated till calcium ions return into sarcoplasmic reticulum. Calcium ions are released till acetyl choline is present. Acetyl choline is released till the muscle fibre receives signal from motor neurons. | |
| 737. |
Estrogen and progestrone importance in females and difference? |
| Answer» The only difference between Estrogen nd progesterone is that the Estrogen are secreted by the follicular cells of the developing ovarian on the other hand Progesterone is secreted by the corpus luteum. ➡️function of Estrogen are ✔️They stimulate the growth and functioning of female secondary organ. ✔️they also stimulate the growth of ovarian follicles. ➡️function of Progesterone are ✔️it supports pregnancy. ✔️it act on mammary glands and stimulates the formation of alveoli, nd milk secretion. | |
| 738. |
Each vertebrae makes how many joints with adjacent vertebrae |
| Answer» There are two facet\xa0joints\xa0in each spinal motion segment and each facet\xa0joint\xa0is innervated by the recurrent meningeal nerves. The biomechanical function of each pair of facet\xa0joints\xa0is to guide and limit movement of the spinal motion segment. Syndesmoses are\xa0joints\xa0in which\xa0two adjacent\xa0bones are linked by a ligament, for example, the ligamentum flavum, which connects\xa0adjacent vertebral\xa0laminae, or by an interosseous membrane, which links, for example, the radius and ulna in the forearm. | |
| 739. |
Digestion and absorptio kya important hai ya nahi |
| Answer» Digestion of protein,fat,carbohydrates,then histology of alimentary canaland absorption ,disorder | |
| 740. |
what is the fate of pyruvic acid formed in muscles during continuous physical work |
| Answer» Pyruvic acid is converted into latic acid and small amount of energy | |
| 741. |
name the first products formed rubisco acts as oxygenase and rubisco acts as carboxylase |
| Answer» Answer please | |
| 742. |
What the terms phycobiont and mycobiont signify? |
| Answer» Phycobiont refers to the algal component of the lichens and mycobiont refers to the fungal component. Both of these are present in symbiotic relationship in which Algae prepare food for Fungi due to presence of chlorophyll whereas the fungus provides shelter to algae and absorbs water and nutrients from the soil. | |
| 743. |
Difference between bood and lymph |
| Answer» Blood~ 1. Reddish in colour2. RBC are present3. Bidirectional flow4.flow is rapid5. Platelets presentLymph~1. Pale yellow in colour2. RBC absent3. Unidirectional flow4. Flow is slow5. Platelets absent | |
| 744. |
Distinguish between spike and spikelet |
| Answer» A spike is the ear of corn or grain;which is pointed or sharp.A spikelet is a small,or secondary spike ;especially one of many. | |
| 745. |
Difference between C3and C4 cycle. Give minimum 3. |
| Answer» In C3 plants carboxylation of RuBP and its regeneration takes place while in C4 plants phospho enol pyruvic acid (PEP) is converted into oxalo acetic acid. In c3 Plants 18 Atp is produced while in c4 Plants 30 Atp is produced.In c3 plants kranz anatomy is absent while in c4 Plants kranz anatomy is present. C3 Plants are also known as Calvin cycle whereas C4 Plants are also known as Hatch and Slack cycle. Example of C3 cycle are rice and wheat whereas examples of C4 cycle are sugarcane and maize. | |
| 746. |
Phargmoplasts or vesicles of golgibody are the precursors of ____??? |
| Answer» | |
| 747. |
Good evening all……plzz tell me which are important questions from Respiration in plants |
| Answer» That whole chapter is. Important. Reading is must. | |
| 748. |
What is the mechanism of curding of milk in body |
| Answer» The Rennin enzyme converts milk(caesin) into curd(paracaesin).This is known as Curdling process. | |
| 749. |
What are the way in which specimens are kept in musium |
| Answer» Cork and foam plastics are convenient examples. Open trays are very vulnerable to attack by museum beetles and similar pests. So, such open trays are stored in turn inside glass-topped insect proof drawers, commonly protected by suitable pesticides, repellents or barriers. | |
| 750. |
What is partial pressure of a gas...(easy define) |
| Answer» It is the pressure exerted by an individual gas in a mixture of gases..... | |