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Biology Quiz 2

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  1. Question 1 of 50
    1. Question

    Which was the first enzyme isolated in pure crystalline form?

    Hint

    Urease was the First Crystalline Enzyme and the Proof That Enzymes Are Proteins. The isolation and crystallization of urease by James Sumner, in 1926, provided a breakthrough in early enzyme studies.

  2. Question 2 of 50
    2. Question

    The process of digestion is helped by:

    Hint

    Enzymes play a key role in process of digestion. The human body makes enzymes in the digestive system, including the mouth, stomach, and small intestine. Digestive enzymes help the body break down carbohydrates, fats, and proteins from food. This is necessary to allow for the absorption of nutrients and to maintain optimal health.

  3. Question 3 of 50
    3. Question

    Which is the organ that excretes water, fat and various catabolic wastes?

    Hint

    The kidney is the organ that excretes water, fat and various catabolic wastes. The kidneys remove waste products called urea from the blood through tiny filtering units called nephrons. There are about one million nephrons in each kidney.

  4. Question 4 of 50
    4. Question

    Clove, the commonly-used spice, is obtained from the:

    Hint

    Cloves are commonly used as a spice. They are the dried flowers of the tree Syzygium aromaticum.

  5. Question 5 of 50
    5. Question

    What are the blood corpuscles that help to build up resistance against diseases?

    Hint

    Leukocytes are the blood corpuscles that help to build up resistance against diseases. White blood cells (WBCs), also known as leukocytes, are responsible for protecting the body from infection. As part of the immune system, WBCs circulate in the blood and respond to injury or illness.

  6. Question 6 of 50
    6. Question

    Which is the gland that holds the body’s thermostat?

    Hint

    Hypothalamus is the gland that holds the body’s thermostat. It is involved in different daily activities like eating or drinking, in the control of the body’s temperature and energy maintenance, and in the process of memorizing and in stress control. It acts as the body’s smart control coordinating center.

  7. Question 7 of 50
    7. Question

    How many chromosomes are found in a human ovum?

    Hint

    There are 23 chromosomes in a human ovum and 23 chromosomes in human sperm. Healthy humans have 23 pairs of chromosomes in which 22 pairs are autosomes and 2 are sex chromosomes. The ovum (female gamete) is formed by the meiosis due to which they have only the half number of chromosomes, which means 22 autosomes (11 pairs) and 1 sex chromosome.

  8. Question 8 of 50
    8. Question

    From which part of the plant ‘Hashish’ is obtained?

    Hint

    Hashish is a drug made by compressing and processing parts of the cannabis plant, typically focusing on flowering buds (female flowers) containing the most trichomes.

  9. Question 9 of 50
    9. Question

    Which organ of the body never rests?

    Hint

    The heart is the only organ in the body that never rests throughout the entire life.

  10. Question 10 of 50
    10. Question

    In which part of the eye lies the pigment that decides the colour of the eyes of a person?

    Hint

    A person’s eye color results from the pigmentation of a structure called the iris, which surrounds the small black hole in the center of the eye (the pupil) and helps control how much light can enter the eye. The color of the iris ranges on a continuum from very light blue to dark brown.

  11. Question 11 of 50
    11. Question

    Which of the following is true about ‘Terminator seeds’?

    Hint

    Terminator seeds, also called suicide seeds, contain genetically engineered properties to prevent multiplication. It is a seed that is genetically modified so that any crops grown from it do not produce fertile seeds. Because the crops produce sterile seeds, farmers need to buy a new batch of seeds every year rather than using the traditional farming method of saving, reusing and sharing seeds.

  12. Question 12 of 50
    12. Question

    The presence of what distinguishes a plant cell from an animal cell?

    Hint

    One of the major differences between plant and animal cells is the presence of chloroplasts. Plant cells have chloroplasts while animal cells don’t. Chloroplasts enable plants to perform photosynthesis to make food. Plant cells have a cell wall, but animal cells do not.

  13. Question 13 of 50
    13. Question

    Which of the following is most important for the growth of children up to the age of 14?

    Hint

    Protein is most important for the growth of children up to the age of 14 as during the teenage, children experience rapid changes in their physical development. Protein is a slow-digesting nutrient, which is needed for the repair and growth of muscles and tissues. It is also essential for the production of enzymes and hormones.

  14. Question 14 of 50
    14. Question

    Which of the following is not required for seed germination?

    Hint

    Sunlight is not required for seed germination. Light isn’t strictly necessary for germination in most plant species. All seeds need water, oxygen and suitable temperature to germinate.

  15. Question 15 of 50
    15. Question

    The longest cell in the human body is:

    Hint

    Nerve cell is the longest cell in the human body. It is made of billion neurons. The largest cell in the human body is ovum (egg cell). Smallest cell in the human body is gametes (sperm cell). The largest cells is an egg cell of ostrich.

  16. Question 16 of 50
    16. Question

    Which of the following is known as a bodybuilder?

    Hint

    Protein is known as a bodybuilder. It has a special role in bodybuilding because it contains the very building blocks of muscle tissue called amino acids. Protein is a slow-digesting nutrient, which is needed for the repair and growth of muscles and tissues.

  17. Question 17 of 50
    17. Question

    Which of the following tests helps in diagnosis of cancer?

    Hint

    A biopsy test is typically associated with the diagnosis of cancer. Doctors use biopsies to test whether abnormalities in the body are caused by cancer or by other conditions.

  18. Question 18 of 50
    18. Question

    During dehydration what is the substance that is usually lost by the body?

    Hint

    Dehydration is caused by not drinking enough fluid or by losing more fluid than you take in. During dehydration, Sodium chloride is the substance that is usually lost by the body. Fluid is lost through sweat, tears, vomiting, urine or diarrhea. Dehydration is almost invariably associated with some loss of salt (sodium chloride) as well.

  19. Question 19 of 50
    19. Question

    Which of the following is the main nitrogenous waste in humans?

    Hint

    Urea and uric acid are the two nitrogenous wastes that are secreted in urine. Urea is the main nitrogenous waste in humans. Urea serves an important role in the metabolism of nitrogen-containing compounds by animals. It is the main nitrogen-containing substance in the urine of mammals. A normal urea level in the urine is 12 to 20 grams over 24 hours.

  20. Question 20 of 50
    20. Question

    Which of the following is the largest living bird?

    Hint

    Ostrich is the largest living bird on the planet. With its long neck and brown plumage, the ostrich is the tallest and heaviest bird. An adult ostrich weighs up to 150 kilograms and has a maximum height of 6 feet.

  21. Question 21 of 50
    21. Question

    In which of the following generally hormone is not found?

    Hint

    In Bacteria generally hormone is not found but it can produce hormones that can affect host metabolism, immunity and behavior.

  22. Question 22 of 50
    22. Question

    The causative organism of dengue fever is:

    Hint

    Dengue viruses (DENV) are the causative organism of dengue fever. They are transmitted to humans through the bite of an infected Aedes species mosquito.

  23. Question 23 of 50
    23. Question

    Which of the following is considered to be the best cholesterol?

    Hint

    There are two main types of cholesterol: low-density lipoprotein (LDL), or “bad” cholesterol, and high-density lipoprotein (HDL), or “good” cholesterol. HDL cholesterol is considered to be the best cholesterol because it helps remove other forms of cholesterol from the bloodstream.

  24. Question 24 of 50
    24. Question

    Thalassemia is a hereditary disease. It affects:

    Hint

    Thalassemia is a hereditary disease which affects Blood. It is an inherited blood disorder characterised by less oxygen-carrying protein (hemoglobin) and fewer red blood cells in the body than normal.

  25. Question 25 of 50
    25. Question

    Which of the following represents a food chain involving a producer, a vegetarian and a non-vegetarian?

    Hint

    “Plant – Rabbit – Tiger” represents a food chain involving a producer, a vegetarian and a non-vegetarian.

  26. Question 26 of 50
    26. Question

    Aspirin is:

    Hint

    Aspirin is Acetylsalicylic acid. It is a nonsteroidal anti-inflammatory drug (NSAID) used to reduce pain, fever, or inflammation.

  27. Question 27 of 50
    27. Question

    Which of the following makes the skin layer impervious to water?

    Hint

    Keratin is a type of structural protein which makes the skin layer impervious to water. It is found on epithelial cells, which line the inside and outside surfaces of the body. Keratins help form the tissues of the hair, nails, and the outer layer of the skin.

  28. Question 28 of 50
    28. Question

    Two richest known sources of edible protein are:

    Hint

    Soybean and groundnut are the two richest known sources of edible protein. The protein content of soybeans is 36–56% and groundnut is 22-30% of the dry weight. Soybean protein is known as a complete protein as it provides all of the essential amino acids for human nutrition.

  29. Question 29 of 50
    29. Question

    Which of the following weeds has been found useful to check water pollution caused by industrial effluents?

    Hint

    The undesirable plants that grow along with the desirable plants are called weeds. Water hyacinth is useful to check water pollution caused by industrial effluents. It is observed that water hyacinth has the capability to reduce the pH of textile waste water from alkaline to neutral, COD and BOD reduction in the range of 40–70%, total solids with a maximum reduction of 50.64%. The reduction in pH further favoured microbial action to degrade COD and BOD in wastewater.

  30. Question 30 of 50
    30. Question

    Which of the following food crops has the maximum content of proteins?

    Hint

    Soybean is the richest known source of edible protein. The protein content of soybeans is 36–56% of the dry weight. Soybean protein is known as a complete protein as it provides all of the essential amino acids for human nutrition.

  31. Question 31 of 50
    31. Question

    The total number of vertebrae in a human being is:

    Hint

    Vertebrae is a series of bones that form the spinal column (backbone) of all vertebrates. The average person is born with 33 vertebrae that interact and connect with each other through flexible joints called facets. By the time a person becomes an adult most have only 24-26 vertebrae because some vertebrae at the bottom end of the spine fuse together during normal growth and development.

  32. Question 32 of 50
    32. Question

    On average, what percentage of human body has the element of oxygen?

    Hint

    By mass, about 96 percent of the human body is made up of just four elements: oxygen (65 percent), carbon (18.5 percent), hydrogen (9.5 percent), and nitrogen (3.3 percent). Oxygen (O) together with hydrogen form water, which is the primary solvent found in the body and is used to regulate temperature and osmotic pressure.

  33. Question 33 of 50
    33. Question

    BCG vaccination is to be given to a new-born child:

    Hint

    BCG (Bacille Calmette-Guerin) vaccination is to be given to a newborn child within six months. This vaccination provides consistent protection against tuberculosis (TB) disease. It is recommended for all babies soon after birth up to 1 year old (for some specific areas).

  34. Question 34 of 50
    34. Question

    The hybrid between horse and donkey is called:

    Hint

    The hybrid between horse and donkey is called Mule. Usually, it’s the male donkey (jack) mating with a female horse (mare) to produce a mule, which can come in either male or female. Due to the odd number of chromosomes, they can’t reproduce.

  35. Question 35 of 50
    35. Question

    Glaucoma is a disease of the:

    Hint

    Glaucoma is a disease of the eyes. It is a group of eye conditions that damage the optic nerve, the health of which is vital for good vision. This damage is often caused by abnormally high pressure in the eye.

  36. Question 36 of 50
    36. Question

    Human kidney disorder is caused by the pollution of:

    Hint

    Human kidney disorder is caused by the pollution of Cadmium. Heavy metals (mercury, lead, cadmium) are among the best-known environmental pollutants causing kidney disease.

  37. Question 37 of 50
    37. Question

    Dehydration in human body is caused due to the deficiency of:

    Hint

    Dehydration is a deficiency of water in the body. It occurs when the human body uses or loses more fluid than takes in, and the body doesn’t have enough water and other fluids to carry out its normal functions.

  38. Question 38 of 50
    38. Question

    Hamburger effect is otherwise known as:

    Hint

    Hamburger effect is otherwise known as Chloride shift. Chloride shift is a process which occurs in a cardiovascular system and refers to the exchange of bicarbonate (HCO3−) and chloride (Cl−) across the membrane of red blood cells (RBCs).

  39. Question 39 of 50
    39. Question

    Which among the following elements is found in maximum percentage in the human body?

    Hint

    By mass, about 96 percent of the human body is made up of just four elements: oxygen (65 percent), carbon (18.5 percent), hydrogen (9.5 percent), and nitrogen (3.3 percent). Oxygen (O) together with hydrogen form water, which is the primary solvent found in the body and is used to regulate temperature and osmotic pressure.

  40. Question 40 of 50
    40. Question

    Which among the following bears the smallest living cell?

    Hint

    Among the given options, Mollusc plasma bears the smallest living cell. Mycoplasma is the smallest living known cell. It is prokaryotic, devoid of a cell wall and can live without oxygen. It is pathogenic to both plants and animals.

  41. Question 41 of 50
    41. Question

    Which among the following fishes lives mostly in the ocean but during reproduction goes to fresh water stream?

    Hint

    Anadromous fish lives mostly in the ocean but during reproduction go to fresh water stream. Hilsa and Salmon are anadromous fish.

  42. Question 42 of 50
    42. Question

    Which among the following is a non-conventional source of energy?

    Hint

    Non-conventional energy (also known as Renewable energy) sources are sources that are renewed by natural processes on a continual basis. Energy generated by using wind, solar, small hydro, tides, geothermal heat and biomass is known as non-conventional energy. Hydroelectric power is a renewable energy source. It uses the energy of running water, without reducing its quantity, to produce electricity.

  43. Question 43 of 50
    43. Question

    Yawning occurs:

    Hint

    Yawning occurs when CO2 concentration in the blood is high, and Oxygen (O2) concentration is low. The yawn acts as a boost to the O2 levels.

  44. Question 44 of 50
    44. Question

    Which among the following living being has respiratory organ but does not have brain?

    Hint

    The starfish has respiratory organ but does not have brain. They have a complex nervous system that allows them to make a decision. This nervous system is centralized in the ring around the mouth.

  45. Question 45 of 50
    45. Question

    Which vitamin helps in blood coagulation?

    Hint

    Vitamin K helps in blood coagulation (clotting). It helps to make various proteins that are needed for blood clotting and the building of bones. Prothrombin is a vitamin K-dependent protein directly involved with blood clotting.

  46. Question 46 of 50
    46. Question

    Which of the following is correlated with blood pressure?

    Hint

    Adrenal (also known as suprarenal glands) are small, triangular-shaped glands located on top of both kidneys. Adrenal glands produce hormones that help regulate your metabolism, immune system, blood pressure, response to stress and other essential functions.

  47. Question 47 of 50
    47. Question

    Which of the following structures present in mammalian skin directly helps in regulating body temperature?

    Hint

    The primary function of sweat glands is to keep the core body temperature at approximately 37°C by releasing sweat in a hot environment or during physical activity. As the water in the sweat evaporates, the surface of the skin cools.

  48. Question 48 of 50
    48. Question

    Which of the following diseases usually spreads through milk?

    Hint

    Mycobacterium Bovis, a bacterial species of the M. tuberculosis complex, is a pathogen that primarily infects cattle. However, humans also can become infected, most commonly through the consumption of unpasteurized milk products from infected cows.

  49. Question 49 of 50
    49. Question

    Which are the largest fixator of solar energy?

    Hint

    Green plants are the largest fixator of solar energy. All green plants generate and transfer energy through the processes of photosynthesis and respiration.

  50. Question 50 of 50
    50. Question

    Which of the following is a correct description of ‘tissue culture’?

    Hint

    Tissue culture (micropropagation) is the growth of tissues or cells in an artificial medium separate from the parent organism. It is a technique in which fragments of plants are cultured and grown in a laboratory.

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