31. Haematuria is a disorder involving __
[A] Loss of haemoglobin in R.B.C.
[B] The loss of blood through the urine
[C] The increase in concentration blood urea
[D] Loss of glucose in urine
Show Answer
Correct Answer: B [The loss of blood through the urine]
Notes:
Haematuria is a disorder involving the loss of blood through the urine.
32. The lesser omentum connects the stomach to which structure?
[A] Diaphragm
[B] Transverse colon
[C] Oesophagus
[D] Liver
Show Answer
Correct Answer: D [Liver]
Notes:
The lesser omentum connects the stomach to the Liver. While the large omentum connects the abdomen to the transverse colon.
33. A test is used to determine the sex of the fetus:
[A] Amniocentesis
[B] Amyliodogenesis
[C] Amnionic
[D] Fluidic
Show Answer
Correct Answer: A [Amniocentesis]
Notes:
A test is used to determine the sex of the fetus is Amniocentesis.
34. Which of the following is an example of Phenotype?
[A] Eye color
[B] Sound of your voice
[C] Hair color
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Eye color, Sound of your voice, and Hair color are examples of Phenotype. The observable physical properties of an organism are called Phenotypes.
35. Which of the following are the benefits of vermicomposting?
[A] develops roots of the plants
[B] increases the fertility and water-resistance of the soil
[C] Both 1 and 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: C [Both 1 and 2]
Notes:
The benefits of vermicomposting are to develop roots of the plants, improve the physical structure of the soil, and increase the fertility and water-resistance of the soil.
36. Which of the following initiates replication in DNA?
[A] DNA ligase
[B] Origin of replication
[C] Termination sequences
[D] Histone proteins
Show Answer
Correct Answer: B [Origin of replication]
Notes:
A chromosome contains the specific DNA sequence, called the origin of replication, which is responsible for initiating replication. DNA ligase is an enzyme. It helps in binding the DNA. Termination sequence is the site where DNA replication ends while histones are the proteins around which DNA is wound.
37. What is Alzheimer’s disease?
[A] It affects liver
[B] It is a disorder of the brain
[C] It affects kidney
[D] It affects human immune system
Show Answer
Correct Answer: B [It is a disorder of the brain]
Notes:
Alzheimer’s disease is a progressive neurologic disease of the brain leading to the irreversible loss of neurons and the loss of intellectual abilities, including memory and reasoning. These with time become severe enough to impede social or occupational functioning. Alzheimer’s disease is also known as simply Senile Dementia.
38. People with Downs syndrome invariably affected by _____:
[A] Alzheimers disease
[B] Huntingtons disease
[C] Brain haemorrhage
[D] Meningitis
Show Answer
Correct Answer: A [Alzheimers disease]
Notes:
The best-known and most common chromosome abnormality in humans is Down’s syndrome, (Trisomy of 21st pair of chromosome). Down’s syndrome individuals also almost invariably develop Alzheimer’s disease, a form of dementia that is fairly common among the elderly people. People with Down’s syndrome develop this disease in their fourth or fifth decade of life, much sooner than other people. These people are also characterized by presence of webbed neck, Plamers crease, very broad forehead, round face and forked tongue.
39. The hydrophilic nature of DNA is due to the presence of ____:
[A] A number of hydrogen bonds
[B] Phosphate group
[C] Thymine base
[D] Deoxyribose sugar
Show Answer
Correct Answer: A [A number of hydrogen bonds]
Notes:
The phosphate groups on DNA are ionic and charged. Each phosphate group on the DNA backbone has one unit of negative charge (-1). Charged molecules attract water and are hydrophilic. DNA has two hydrophilic polar external backbones made of sugars and phosphate groups joined by ester bonds. Therefore, DNA as nucleic acid is characterized by presence of phosphodiester bond.
40. Which of the following plant pigments absorbs in red and far red region of light?
[A] Phytochrome
[B] Cryptochrome
[C] Carotenoide
[D] Chlorophyll
Show Answer
Correct Answer: A [Phytochrome]
Notes:
Phytochrome is a photoreceptor, a pigment that plants use to detect light. It is a protein with a bilin chromophore. It detects mainly red and far-red region of the visible spectrum and regulates germination of seeds in photoblastic seeds.
