Biology and Biotechnology

What is Gay or Lesbian ? How can I identify She/He is Lesbian/Gay (According to google sexually attracted to people of the same sex; homosexual) What is Gay in Mens - A man/boy Attract towards other Man's or boys What is Lesbian? - A girl/women attract towards other girls or woman's This Peoples shows attractive behaviour towards same gender  = Homosexuality • Why some women are behaving like lesbians ? There is no real explanation as to why some women are lesbians and others are not – it is just a part of who we are. It may be a result of genetic influences or because of social experiences or a combination of the two. Some people recognise their attractions at an early age when is in teen age, while others don't develop attractions until well into adulthood. Many young people begin to develop feelings and attractions for people of the same sex during their teenage years. • How can we Knowing whether someone else is a lesbian or nor ? You probably won't know if a woman ...

  What Should we Do after Bite of Snakes 🐍 ? First aid for snakebites If you suspect a snake bite: 👉Immediately move away from the area where the bite occurred. If the snake is still attached use a stick or tool to make it let go. Sea snake victims need to be moved to dry land to avoid drowning. 👉Remove anything tight from around the bitten part of the body (e.g.: rings, anklets, bracelets) as these can cause harm if swelling occurs. 👉Reassure the victim. Many snake bites are caused by non-venomous snakes. And even after most venomous snake bites the risk of death is not immediate. 👉Immobilize the person completely. Splint the limb to keep it still. Use a makeshift stretcher to carry the person to a place where transport is available to take them to a health facility. 👉Never use a tight arterial tourniquet. 👉The Australian Pressure Immobilization Bandage (PIB) Method is only recommended for bites by neurotoxic snakes that do not cause local swelling. 👉Applying pressure at t...

  Scientist Of Biology With His Discovery (For the Reference - 11th NCERT Biology Book ) Ernst Mayr (1904 - 2004) Born on 5 July 1904 , in Kempten , Germany , ERNST MAYR , the Harvard University evolutionary biologist who has been called The Darwin of the 20th century ' , was one of the 100 greatest scientists of all time . Mayr joined Harvard's Faculty of Arts and Sciences in 1953 and retired in 1975 , assuming the title Alexander Agassiz Professor of Zoology Emeritus . Throughout his nearly 80 - year career , his research spanned ornithology taxonomy , zoogeography , evolution , systematics , and the history and philosophy of biology . He almost single - handedly made the origin of species diversity the central question of evolutionary biology that it is today . He also pioneered the currently accepted definition of a biological species . Mayr was awarded the three prizes widely regarded as the triple crown of biology : the Balzan Prize in 1983 , the International Prize for B...

 1. Respiratory substrates are the organic substances , which are…………..during  respiration to liberate energy  (1) Oxidised (2) Reduced  (3) Synthesised (4) both 1 and 2 2. Which of the following statement is true for the given equation? (1) pyruvic acid is oxidatively  decarboxylated to form acetyl CoA (2) it needs a multienzyme complex (3) 5 essential cofactors required are lipoic acid, CoA, NAD, TPP and Mg2+ (4) all of the above 3. Lactic acid formation can be observed in  (1) Pea seeds (2) Muscle cells (3) Cereal seeds (4) Groundnut 4. FAD is electron acceptor during oxidation  of which of the following? (1) a-ketoglutarate Succinyl Co-A (2) Succinic acid Fumaric acid (3) Succinyl Co-A Succinic acid (4) Fumaric acid Malic acid 5. The released energy obtained by oxidation is stored as (1) A concentration gradient across a  membrane (2) ADP (3) ATP (4) NAD+ 6. Acetaldehyde is intermediate product in  (1) lactic acid fermentation (2) ethyl a...

  Narrowing of an artery The tissues distal to the narrow point become ischaemic. The cells may receive enough blood to meet their minimum needs, but not enough to cope with an increase in metabolic rate, e.g. when muscle activity is increased. This causes acute cramp-like ischaemic pain, which disappears when exertion stops. Cardiac muscle and skeletal muscles of the lower limb are most commonly affected. Ischaemic pain in the heart is called angina pectoris (p. 120), and in the lower limbs, intermittent claudication. Occlusion of an artery When an artery is completely blocked, the tissues it supplies rapidly undergo degeneration and die from ischaemia, which leads to infarction. If a major artery supplying a large amount of tissue is affected, the consequences are likely to be more severe than if the obstruction occurs in a minor vessel. If the tissue is well provided with a collateral circulation (such as the circulus arteriosus provides in the brain), tissue damage is less t...

  What is NFT ? - Non Fungible Token - Etherium crypto currency It is Digital Block chain technology, in which you can create your art(painting,gif, images, videos) convert it into NFT and sold it on NFT (price as you want) , you will earn 10% at every time when it will be sold out to people's CLICK Down Poster 👇🏻 CLICK HERE 👇 If you makes unique art , video etc. Then you can mint in NFT. Then it will be locked as patent. All World will consider as Your contain is unique contain in the world if you will submit in NFT. You can sale it to anyone as your desire price because " art have not specific value like other products". When your NFT will sales , then you have get 10% value of your NFT contain. This NFT selling in 67k USD Now days NFT on trending,so you must try it. can I create NFT ? where to upload nft art ? (How to create NFT through Meta Mask and Opensea) Yes, off cours. You can do it easily. 1) You should create your wallet account. (Most popular is Meta M...

How many Phases of Digestion? Cephalic Phase During the cephalic phase of digestion, the smell, sight, thought,or initial taste of food activates neural centers in the cerebral cortex, hypothalamus, and brain stem. The brain stem then activates The facial (VII),glossopharyngeal (IX), and vagus (X) nerves.The facial and glossopharyngeal nerves stimulate the salivary glands to secrete saliva, while the vagus nerves stimulate the gastric glands to secrete gastric juice. The purpose of the cephalic phase of digestion is to prepare the mouth and stomach for food that is about to be eaten. Gastric Phase : Once food reaches the stomach, the gastric phase of digestion begins. Neural and hormonal mechanisms regulate the gastric phase of digestion to promote gastric secretion and gastric motility. • Neural regulation. Food of any kind distends the stomach and stimulates stretch receptors in its walls.Chemoreceptors in the stomach monitor the pH of the stomach chyme. When the stomach walls are di...

What is Negative Feedback Mechanisms ? In human body systems controlled by negative feedback, the effector response decreases or negates the effect of the original stimulus, maintaining or restoring homeostasis (thus the term negative feedback).  1) Control of body temperature is similar to the non-physiological example of a domestic central heating system. 2)  The thermostat (temperature detector) is sensitive to changes in room temperature (variable factor). 3)  The thermostat is connected to the boiler control unit (control centre), which controls the boiler (effector).  4)  The thermostat constantly compares the information from the detector with the preset temperature and, when necessary, adjustments are made to alter the room temperature.  5)  When the thermostat detects the room temperature is low, it switches the boiler on. The result is output of heat by the boiler, warming the room.  6)  When the preset temperature is reached, the ...

  Respiratory System Anatomy • Describe the anatomy and histology of the nose, pharynx, larynx, trachea, bronchi, and lungs. • Identify the functions of each respiratory system structure. The respiratory system (RES-pi-ra-toˉr-e¯) consists of the nose, pharynx (throat), larynx (voice box), trachea (windpipe), bronchi, and lungs . Its parts can be classified according to either structure or function. Structurally, the respiratory system consists of two parts:  (1) The upper respiratory system includes the nose, nasal cavity, pharynx, and associated structures;  (2) the lower respiratory system includes the larynx, trachea, bronchi, and lungs. Functionally, the respiratory system also consists of two parts.  (1) The conducting zone consists of a series of interconnecting cavities and tubes both outside and within the lungs. These include the nose, nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and terminal bronchioles; their function is to filter...

  Introduction : The body contains not only millions of different T cells but also millions of different B cells, each capable of responding to a specific antigen. Cytotoxic T cells leave lymphatic tissues to seek out and destroy a foreign antigen, but B cells stay put. In the presence of a foreign antigen, a specific B cell in a lymph node, the spleen, or mucosa-associated lymphatic tissue becomes activated. Then it undergoes clonal selection, forming a clone of plasma cells and memory cells. Plasma cells are the effector cells of a B cell clone; they secrete specific antibodies, which in turn circulate in the lymph and blood to reach the site of invasion. What does activate clonal Selection? Activation and Clonal Selection of B Cells During activation of a B cell, an antigen binds to B-cell receptors(BCRs). These integral transmembrane proteins are chemically similar to the antibodies that eventually are secreted by plasma cells. Although B cells can respond to an unproce...