1. Which among the following diseases is characterized by “complete loss of memory”?
[A] Amnesia
[B] Schizophrenia
[C] Alzheimer’s disease
[D] Parkinson’s disease
Show Answer
Correct Answer: A [Amnesia ]
Notes:
Amnesia refers to a loss of memory due to illness, injury, drug abuse or other causes.
2. Which among the following glands secrets Adrenocorticotrophic Hormone?
[A] Adrenal
[B] pancreas
[C] pituatry
[D] Thyriod
Show Answer
Correct Answer: C [pituatry]
Notes:
The pituitary gland or hypophysis is located in one of the bones at the base of the skull. It has two portions viz. anterior hypophysis and posterior hypophysis.
The anterior part produces two hormones that work directly viz. growth hormone (GH) and prolactin; and four tropic hormones {tropic hormones regulate the other endocrine glands} viz. adrenocorticotropic hormone (ACTH), thyroid-stimulating hormone (TSH), luteinizing hormone (LH) and follicle-stimulating hormone (FSH).
The posterior part releases two hormones produced in the hypothalamus viz. oxytocin and antidiuretic hormone (ADH or vasopressin).
3. MON 863 is a genetically engineered variety of which among the following?
[A] Soya Bean
[B] Maize
[C] Rice
[D] Tomato
Show Answer
Correct Answer: B [Maize]
Notes:
MON 863 is a genetically engineered variety of maize produced by Monsanto. It was generated by transformation of Zea mays cell culture line AT824 with a MIuI restriction fragment from plasmid PV-ZMIR13 using particle acceleration technology.
4. Cell membranes contain some biochemicals which are responsible for cell recognition and adhesion. They are _________ ?
[A] Proteins
[B] Lipids
[C] glycoproteins and gycolipids
[D] None of the above
Show Answer
Correct Answer: C [glycoproteins and gycolipids]
Notes:
Cell membranes contain some biochemicals which are responsible for cell recognition and adhesion. They are glycoproteins and glycolipids. Lipid and proteins on the cell membrane surface often have short carbohydrate chains protruding out from the cell surface which are known as glycolipids and glycoproteins.
5. Which among the following is the smallest Human Chromosome?
[A] Chromosome 10
[B] Chromosome 16
[C] Chromosome 20
[D] Chromosome 21
Show Answer
Correct Answer: D [Chromosome 21]
Notes:
Made up of 47 million nucleotides, Chromosome 21 is the smallest Human Chromosome.
6. Gargling with a solution of table salt is known to provide relief for a sore throat because ____ ?
[A] It kills bacteria
[B] It works as analgesic
[C] It dehydrates water from inflammatory tissues by Osmosis
[D] None of the above reasons
Show Answer
Correct Answer: C [ It dehydrates water from inflammatory tissues by Osmosis]
Notes:
Gargling with a solution of table salt is known to provide relief for a sore throat because it dehydrates water from inflammatory tissues by Osmosis. Gargling with salt water helps cure the throat infection.
7. Scurvy is caused by deficiency of which of the following vitamins?
[A] Vitamin A
[B] Vitamin C
[C] Vitamin D
[D] Vitamin B
Show Answer
Correct Answer: B [Vitamin C]
Notes:
Scurvy is the name for a vitamin C deficiency. It can lead to anemia, debility, exhaustion, spontaneous bleeding, pain in the limbs, and especially the legs, swelling in some parts of the body, and sometimes ulceration of the gums and loss of teeth.
8. Mitochondrial DNA in an individual comes from which of the following sources?
[A] Male parent
[B] Female parent
[C] Both parents
[D] Neither of the parents
Show Answer
Correct Answer: C [Both parents]
Notes:
Mitochondrial DNA is the small circular chromosome found inside mitochondria. The mitochondria, and thus mitochondrial DNA, are passed almost exclusively from mother to offspring through the egg cell. Electron microscopy reveals mitochondrial DNA in discrete foci.
9. The highest fat content is found in the milk of which of the following animals?
[A] Buffalo
[B] Cow
[C] Camel
[D] Reindeer
Show Answer
Correct Answer: A [Buffalo]
Notes:
Buffalo milk has the highest fat content, which is on average twice as high as that of cow milk. The fat-to-protein ratio in buffalo milk is about 2:1.
10. Which one of the following is a membrane that protects the developing embryo from desiccation?
[A] Amnion
[B] Allantois
[C] Chorion
[D] Yolk sac
Show Answer
Correct Answer: A [Amnion]
Notes:
The amnion or amniotic sac protects everyone embryo from desiccation, it contains amniotic fluid which cushions the embryo from shocks.
