31. In patients with hemophilia, which of these can increase the risk of cerebral microbleeds?
[A] cardiovascular risk factors
[B] increased age
[C] Hepatitis C infection
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
In patients with hemophilia, cardiovascular risk factors, age, and hepatitis C infection may increase the risk of cerebral microbleeds.
32. Which of Mendel’s laws is against the theory of Blending inheritance?
[A] Law of segregation
[B] Law of dominance
[C] Law of recessive
[D] Law of independent assortment
Show Answer
Correct Answer: A [Law of segregation]
Notes:
The law of segregation states that allelomorphs do not and do not lose their identity, but as long as they separate into different gametes, they remain together until the formation of gametes. There is no law of recurring; This is just part of the law of dominance.
33. What is the aerobic digestion of sewage used to produce?
[A] Biomass
[B] Biofuels
[C] Synthetic fuels
[D] Metal articles
Show Answer
Correct Answer: B [Biofuels]
Notes:
Aerobic digestion of sewage is used to produce biofuels. The fuel obtained from biomass is called biofuel.
34. The first transgenic crop was __
[A] Potato
[B] Brinjal
[C] Cotton
[D] Tobacco
Show Answer
Correct Answer: D [Tobacco]
Notes:
The first transgenic crop was Tobacco (a virus-resistance plant), which was developed in the year 1983.
35. Epidermal cells of which part of plant often secrete a waxy water resistant layer on their outer surface?
[A] Aerial parts only
[B] Roots only
[C] Both aerial parts and roots
[D] Neither aerial parts nor roots
Show Answer
Correct Answer: A [Aerial parts only]
Notes:
The major role of epidermis is to protect all the parts of the plant. Epidermal cells on the aerial parts of the plant often secrete a waxy, water-resistant layer on their outer surface. This aids in protection against loss of water, mechanical injury and invasion by parasitic fungi.
36. Both, haemoglobin and myoglobin require ____ for formation:
[A] Vitamin A
[B] Vitamin B12
[C] Iron
[D] Calcium
Show Answer
Correct Answer: C [Iron]
Notes:
Haemoglobin is called as tetrameric hemoprotein, while myoglobin is called monomeric protein. Haemoglobin is found systematically all over the body, while myo-globin is found in muscles tissues only. The body requires iron for the synthesis of its oxygen transport proteins, in particular hemo-globin and myoglobin.
37. If a healthy freshwater fish is placed in salt water, what will be the expected consequence?
[A] The fish becomes dehydrated and dies
[B] The fish becomes bloated and dies
[C] The fish suffers from fungal or bacterial disease and dies
[D] There is no observable effect on the fish provided there is sufficient food
Show Answer
Correct Answer: A [The fish becomes dehydrated and dies]
Notes:
When freshwater fish is placed in salt water, the water molecules contained in the fish’s body would pass through the cell membranes of the fish, causing the fish to lose water by osmosis. This sudden change in the molecular makeup of the fish would cause the fish to undergo severe dehydration followed by death.
38. What is the other name for Vitamin B2?
[A] Dextrose
[B] Riboflavin
[C] Thiamine
[D] Haemoglobin
Show Answer
Correct Answer: B [Riboflavin]
Notes:
Riboflavin, also known as vitamin B2 is an easily absorbed colored micronutrient with a key role in energy metabolism, and for the metabolism of fats, ketone bodies, carbohydrates, and proteins.
39. Bone osification test is conducted to as certain human ____:
[A] Tentative age
[B] Drug addiction
[C] Tentative height
[D] Brain efficiency
Show Answer
Correct Answer: A [Tentative age]
Notes:
Ossification is the process of laying down new bone material by cells called osteoblasts. It is synonymous with bone tissue formation. As per scientific evidence, by the age of 25 years nearly all bones are completely ossified in humans. Ossification test is a guess work based on the fusion of joints in the human body b/w birth and age 25. If all joints are fused the person must be of 25yrs of age or older.
40. Hepatitis is a ____:
[A] Lung disease
[B] Liver disease
[C] Kidney disease
[D] Heart disease
Show Answer
Correct Answer: B [Liver disease]
Notes:
Hepatitis is a medical condition defined by the inflammation of the liver and characterized by the presence of inflammatory cells in the tissue of the organ. The condition can be self-limiting (healing on its own) or can progress to fibrosis (scarring) and cirrhosis.
