Cinchona is a genus of flowering plants in the family rubiaceae containing at least 23 species of trees and shrubs. They are native to the tropical Andean forests of western South America.
The medicinal properties of the cinchona tree were originally discovered by the Quechua peoples of Peru, Bolivia, and Ecuador, and long cultivated by them as a muscle relaxant to abate shivering due to low body temperatures, and symptoms of malaria.
Q1562. Which of the following provides energy for photosynthesis?
Photosynthesis is the process by which plants are able to capture light energy and use that energy to make glucose. In this process sunlight provides the energy needed by chlorophyll to change molecules of carbon dioxide and water into glucose (a type of sugar). Oxygen is also released in this reaction.
Q1563. Food for the developing fetus is supplied by the
The placenta (also known as afterbirth) is an organ that connects the developing fetus to the uterinewall to allow nutrient uptake, provide thermo-regulation to the fetus, waste elimination, and gas exchange via the mother’s blood supply, fight against internal infection and produce hormones to support pregnancy.
The importance of perspiration is to regulate body temperature. While abhorred by many, sweating actually has numerous health- and beauty-related benefits. Your skin is the largest organ of your body, and serves important roles just like any other bodily organ. For example, sweating helps your body: Maintain proper temperature and keep you from overheating.
If you use an average of80beats per minute, your heart beats about4,800 times per hour. That’s a whopping 115,200 times per day. Over the course of a year, your heart would beat about 42,048,000 times! If you live to be 80years old, your heart would have beaten approximately 3,363,840,000 times.
Rabies infection is caused by the rabies virus. The virus is spread through the saliva of infected animals. Infected animals can spread the virus by biting another animal or a person. In rare cases, rabies can be spread when infected saliva gets into an open wound or the mucous membranes, such as the mouth or eyes.
Q1570. Which of the following is the best source of Iodine?
Beans are some of the healthiest and most versatile foods on the planet. Enjoy a half-cup serving with any meal, and you’ll provide your body with a respectable amount of protein, copper, potassium, calcium, folate, and iodine. Beans is the best source of Iodine.
Q1571. Transport of oxygen by blood takes place with the help of
A red blood cell, which (in humans) is typically a biconcave disc without a nucleus. Erythrocytes contain the pigment haemoglobin, which imparts the red colour to blood, and transport oxygen and carbon dioxide to and from the tissues.
Together with phloem (tissue that conducts sugars from the leaves to the rest of the plant), xylem is found in all vascular plants, including the seedless club mosses, ferns, horsetails, as well as all angiosperms (flowering plants) and gymnosperms (plants with seeds unenclosed in an ovary).In a plant, the xylem tissue conducts water.
Carrots are a good source of several vitamins and minerals, especially vitamin A (from beta-carotene), biotin, vitamin K (phylloquinone), potassium and vitamin B6. Vitamin A: Carrots are rich in beta-carotene, which is converted to vitamin A in the body.
Q1575. Which one of the following is used as a food preservative?
As a food additive, sodium benzoate has the E number E211. It is bacteriostatic and fungi static under acidic conditions. It is most widely used in acidic foods such as salad dressings (vinegar), carbonated drinks (carbonic acid), jams and fruit juices (citric acid), pickles (vinegar), and condiments.
In the primary (growing) plant cell wall, the major carbohydrates are cellulose, hemi cellulose and pectin. The cellulose micro fibrils are linked via hemi cellulosic tethers to form the cellulose-hemi cellulose network, which is embedded in the pectin matrix.
Q1577. Which of the following events occurred first ?
(a) DNA structure of genes was discovered by James D Watson and Francis Crick
(b) Yuri Gagarin became the first man in space
(c) World’s first human heart transplant was performed by Dr. Christian Barnard
(d) World’s first test tube baby. Louise Brown was bom in U.K.
Today, where a definition of the moment of death is required, doctors and coroners usually turn to “brain death” or “biological death” to define a person as being dead, people are considered dead when the electrical activity in their brain ceases.
Hypertension (HTN or HT), also known as high blood pressure (HBP), is a long term medical condition in which the blood pressure in the arteries is persistently elevated. High blood pressure usually does not cause symptoms.
Q1580. Estrogen and Progesterone control and stimulate the growth in:
Mammary gland is the milk-producing gland of women or other female mammals. Secretory alveoli develop mainly in pregnancy, when rising levels of prolactin, estrogen, and progesterone cause further branching, together with an increase in adipose tissue and a richer blood flow.
Penicillin is made by the blue and white penicillium molds. Commercial penicillin is made by the pencillium chrysogenum mold. The mold that makes roquefort or brie cheese is a penicillium. The hard white crust on brie cheese is made of colonies of pencillium camemberti
Riboflavin (vitamin B2) is part of the vitamin B group. Riboflavin has been used in several clinical and therapeutic situations. For over 30 years, riboflavin supplements have been used as part of the phototherapy treatment of neonatal jaundice.
Q1584. Persons who are colour-blind cannot distinguish between
With this vision problem, you have difficulty distinguishing certain colors, such as blue and yellow or red and green. Color blindness (or, more accurately, color vision deficiency) is an inherited condition that affects males more frequently than females.
Teeth are the hardest substance in the human body. The enamel on your teeth is the hardest and most highly mineralized substance in your body. It covers the outer layer of each tooth and it is the most visible part of the tooth. The enamel is made up mostly of minerals, primarily hydroxyapatite.
Q1588. Which vitamin is produced in human body by exposing it to early morning sun-rays?
Vitamin D is produced in human body by exposing it to early morning sun-rays. Vitamin D refers to a group of fat-soluble steroids responsible for increasing intestinal absorption of calcium, iron, magnesium, phosphate, and zinc.
Q1589. Bone is used as a fertiliser because it contains the plant nutrient
Bone meal (or Bone manure) is a mixture of finely and coarsely ground animal bones and slaughter-house waste products. It is used as an organic fertilizer for plants and as a nutritional supplement for animals. As a slow release fertilizer, bone meal is primarily used as a source of phosphorus and protein.
It provides remedies for many diseases, so it is widely used in Ayurvedic treatment. Gooseberry is very rich in Vitamin C, and contains many minerals and vitamins like Calcium, Phosphorus, Iron, Carotene and Vitamin B Complex. Amla is also a powerful antioxidant agent.
During cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate). Energy is obtained by “burning” some of the glucose produced during photosynthesis.
Q1592. From which part of a plant is turmeric obtained?
Turmeric is the rhizome or underground stem of a ginger-like plant. It is usually available ground, as a bright yellow, fine powder. The whole turmeric is a tuberous rhizome, with a rough, segmented skin. The rhizome is yellowish-brown with a dull orange interior that looks bright yellow when powdered.
Q1593. Genes, the hereditary units, are located in the
A gene is a region ofDNAthat encodes function. A chromosomeconsists of a long strand of DNA containing many genes. A human chromosome can have up to 500 million base pairsof DNA with thousands of genes.
Epidemic dropsy is a clinical state resulting from use of edible oils adulterated with Argemone mexicana seed oil. Sanguinarine and dihydrosanguinarine are two major toxic alkaloids of argemone oil, which cause widespread capillary dilatation, proliferation and increased capillary permeability.
Q1595. Universal donors are people with the blood group
With regard to transfusions of packed red blood cells, individuals with type O Rh D negative blood are often called universal donors, and those with type AB Rh D positive blood are called universal recipients.
Q1596. Aquatic animal with the most developed intelligence is
Sharksare a group of fishcharacterized by a cartilaginousskeleton, five to sevengill slitson the sides of the head and pectoral finsthat are not fused to the head. Sharks possess brain-to-body mass ratios that are similar to mammals and birds and have exhibited apparent curiosity and behaviour resembling play in the wild.
Q1597. The blood vessel which carries oxygenated blood to the liver is
Within the pancreas there are areas that are called the islets of Langerhans. The beta cells constitute the predominant type of cell in the islets. The beta cells are particularly important because they make insulin. Degeneration of the beta cells is the main cause of type I (insulin-dependent) diabetes mellitus.
Q1599. Biogradable wastes can usually be converted into useful substances with the help of:
Biodegradable wasteincludes any organic matterin wastewhich can be broken down into carbon dioxide, water, methane or simple organic molecules by micro-organisms and other living things using composting,aerobic digestion,anaerobic digestionor similar processes. In waste management, it also includes some inorganic materials which can be decomposed by bacteria.
Q1600. An ant can see the objects all around it due to the presence of :
Compound eyes are types of eyes made up of many repeating units called ommatidia. These types of eyesare mainly present in insects, although some crustaceans, such as crayfish, also possess them. A single compound eye can have as many as 30,000 ommatidia.