31. Listeriosis is a serious infection caused by __
[A] Listeria pestis
[B] Listeria monocytogenes
[C] Listeria papillomavirus
[D] None of these
Show Answer
Correct Answer: B [Listeria monocytogenes]
Notes:
Listeriosis is a serious infection caused by Listeria monocytogenes. It is caused by eating food contaminated with the bacterium Listeria monocytogenes.
32. Which of the following is the most fatal non-infectious disease?
[A] AIDS
[B] Cancer
[C] Diabetes
[D] Obesity
Show Answer
Correct Answer: B [Cancer]
Notes:
Cancer is the most fatal non-infectious disease. In cancer, some cells in the body grow uncontrollably and spread to other parts of the body.
33. Which of the following test is used to diagnose Roundworm Infection?
[A] Widal Test
[B] Pap smear’s Test
[C] Gravidex Test
[D] Stool Test
Show Answer
Correct Answer: D [Stool Test]
Notes:
Stool Test is used to diagnose Roundworm Infection.
34. Which of the following is known as the “Father of Genetics”?
[A] Morgan
[B] Mendel
[C] Watson
[D] Bateson
Show Answer
Correct Answer: B [Mendel]
Notes:
Mendel is known as the “Father of Genetics”.
35. The bioethanol is subjected to rectification to remove?
[A] Sugar
[B] Enzymes
[C] Yeast
[D] Impurities
Show Answer
Correct Answer: D [Impurities]
Notes:
The bioethanol is subjected to rectification to Remove Impurities. Alcohol is made by microbial fermentation, mostly from carbohydrates produced in sugar- or starchy plants such as corn, sugarcane, sweet sorghum, or lignocellulosic biomass known as bioethanol.
36. Which of the following is divalent cations are usually used to make competent cells?
[A] Carbon
[B] Nitrogen
[C] Copper
[D] Calcium
Show Answer
Correct Answer: D [Calcium]
Notes:
Calcium is divalent cations that are usually used to make competent cells.
37. Which enzyme digests proteins in the stomach?
[A] Salivary amylase
[B] Trypsin
[C] Pepsin
[D] Pancreatic canal
Show Answer
Correct Answer: C [Pepsin]
Notes:
Protein digestion begins in the stomach with the action of pepsin. Pepsin is the active protein-digesting enzyme of the stomach. When pepsin acts on the protein molecule, it breaks the bonds that hold the protein molecule together, called peptide bonds. Once broken, peptide bonds yield chains of amino acids linked together called polypeptides that are further digested in the small intestine with the help of trypsin, chymotrypsin, and carboxypeptidase.
38. The number of heart beats on an average in an adult human is in the range of ___:
[A] 60-65
[B] 66-70
[C] 71-80
[D] 85-90
Show Answer
Correct Answer: C [71-80]
Notes:
The average heart rate for adult humans is about 70 to 75 beats per minute in a normal relaxed mode. While we tend to think of the “normal” heart beat rate as being “72 beats per minute”, in actuality the heart beat rate is not and could never be constant.
39. Leaves of many grasses are capable of folding and unfolding because _____:
[A] They have stomata on both sides of the leaf
[B] Their mesophyll is not differentiated into palisade and spongy parenchyma
[C] They have high levels of silica
[D] They have specialised bulliform cells
Show Answer
Correct Answer: D [They have specialised bulliform cells]
Notes:
Bulliform cells are large, bubble-shaped epidermal cells that occur in groups on the upper surface of the leaves of many grasses. These cells, by their turgor changes, cause rolling and unrolling of the leaves thus regulating water loss.
40. Which one of the following is not the excretory organ?
[A] Kidneys
[B] Liver
[C] Lungs
[D] Spleen
Show Answer
Correct Answer: D [Spleen]
Notes:
The excretory system is a collection of organs tasked with removing excess nitrogen and other toxins from the body. Several parts of the body such as sweat glands (excretion of sweat), liver (detoxifies and breaks down chemicals, poisons and other toxins that enter the body), lungs (disposal of carbon dioxide through exhalation) and kidneys (excretion of waste through urinary system) are involved in this process. The spleen also called grave yard of RBC is not considered as an excretory organ.
