31. Which of the following are bacterial diseases in Humans?
[A] Pulmonary Tuberculosis
[B] Cholera
[C] Leprosy
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Pulmonary Tuberculosis, Cholera, and Leprosy are bacterial diseases in Humans.
32. Who proposed rDNA technology?
[A] Herbert W. Boyer
[B] Stanley N
[C] Both 1 and 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: C [Both 1 and 2]
Notes:
Herbert W. Boyer and Stanley N proposed rDNA technology. Recombinant DNA (rDNA) is a technology that uses enzymes to cut and paste together DNA sequences of interest.
33. Which of the following prevents bleeding of gums?
[A] Nicotinamide
[B] Ascorbic acid
[C] Thiamine
[D] Vitamin B
Show Answer
Correct Answer: B [Ascorbic acid]
Notes:
Vitamin C (Ascorbic acid) cures scurvy, which can cause abnormal gum bleeding. Excellent sources include citrus fruits such as oranges, lemons, limes, and grapefruits. Researchers examined 15 published studies involving 1,140 healthy people as well as data on 8,210 people from the CDC’s Health and Nutrition Examination Survey. They found that low vitamin C levels in the bloodstream were associated with an increased risk for gum bleeding with gentle probing.
34. Which of the following micro-organism causes diseases like polio and chicken pox?
[A] Protozoa
[B] Bacteria
[C] Virus
[D] Algae
Show Answer
Correct Answer: C [Virus]
Notes:
Both polio and chicken pox are caused by virus. Poliomyelitis, often called polio or infantile paralysis, is an infectious disease caused by the poliovirus; while, Chickenpox, also known as varicella, is a highly contagious disease caused by the initial infection with varicella zoster virus (VZV).
35. Which of the following cell organelle contains DNA apart from nucleus?
[A] Golgi Apparatus
[B] Mitochondria
[C] Cytoplasm
[D] Ribosome
Show Answer
Correct Answer: B [Mitochondria]
Notes:
The three organelles that contain DNA are the nucleus, mitochondria and chloroplasts. Mitochondria are unlike most organelles (with an exception of plant chloroplasts) in that they have their own set of DNA and genes that encode proteins. They are specialized structures unique to the cells of animals, plants and fungi.
36. The pigment that gives human skin, hair and eyes their colour is called ____:
[A] Quinacridone
[B] Alizarin
[C] Melanin
[D] Phthalocyanine
Show Answer
Correct Answer: C [Melanin ]
Notes:
The pigment that gives human skin, hair, and eyes their color. Dark-skinned people have more melanin in their skin than light-skinned people have. Melanin is produced by cells called melanocytes. Everyone has the same number of melanocytes, but some people make more melanin than others.
37. Where does internal fertilization typically occur?
[A] Inside the female body
[B] Outside the female body
[C] Inside the male body
[D] Outside the male body
Show Answer
Correct Answer: A [Inside the female body]
Notes:
Internal fertilization is a mode of reproduction wherein the fusion of male and female gametes (sperm and egg) occurs inside the female body. It’s a common method in terrestrial animals due to the higher survival rate of fertilized eggs within a protected internal environment. Contrastingly, external fertilization takes place outside the female body, often in aquatic environments.
38. Green manure is obtained from ___:
[A] Fresh animal excreta
[B] Decomposing green legume plants
[C] Domestic vegetable waste
[D] Oil seed husk cakes
Show Answer
Correct Answer: B [Decomposing green legume plants]
Notes:
Green undecomposed material used as manure is called green manure. It is obtained in two ways: by growing green manure crops or by collecting green leaf (along with twigs) from plants grown in wastelands, field bunds and forest.
39. Which of the following is a Dominant Autosomal Disorder?
[A] Phenyl Ketorunia
[B] Cystic Fibrosis
[C] Alzheimers Disease
[D] Albinism
Show Answer
Correct Answer: D [Albinism]
Notes:
In an autosomal dominant disorder, the mutated gene is a dominant gene located on one of the nonsex chromosomes (autosomes). The early-onset form of Alzheimer disease is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person inherits the altered gene from one affected parent.
40. Which of the following is an endemic species?
[A] Horn bill
[B] Nicobar pigeon
[C] Indian Rhino
[D] Pink head duck
Show Answer
Correct Answer: A [Horn bill]
Notes:
The Malabar Grey Hornbill is a hornbill that is endemic to the Western Ghats and associated hills of southern India. They are found mainly in dense forest and around rubber or coffee plantations.
