31. Pons, cerebellum, and medulla are part of which of the following brain?
[A] Forebrain
[B] Midbrain
[C] Hindbrain
[D] None of the above
Show Answer
Correct Answer: C [Hindbrain]
Notes:
There are three main parts of the hindbrain – pons, cerebellum, and medulla oblongata. The hindbrain is also called rhombencephalons.
32. Which part of the inner ear is responsible for the balance of the body?
[A] Incus
[B] Sacculus
[C] The organ of Corti
[D] Sacculus, Utriculus and semicircular canals
Show Answer
Correct Answer: D [Sacculus, Utriculus and semicircular canals]
Notes:
Sacculus, Utriculus, and semicircular canals part of the inner ear are responsible for the balance of the body.
33. Which of the following is not an endoparasite?
[A] Ticks
[B] Tapeworms
[C] Liver fluke
[D] Roundworm
Show Answer
Correct Answer: A [Ticks]
Notes:
Anaplasmosis, babesiosis, ehrlichiosis, tularemia, tick-borne relapsing fever are diseases caused by ticks. Ticks are small, blood-sucking bugs.
34. What diseases are caused by Staphylococcus aureus?
[A] skin infections
[B] endocarditis
[C] osteomyelitis
[D] All of these
Show Answer
Correct Answer: D [All of these]
Notes:
Skin infections and sometimes pneumonia, endocarditis, and osteomyelitis diseases are caused by Staphylococcus aureus. It is a type of Gram-positive round-shaped bacteria.
35. Which of the following forestry materials can be used as biomass?
[A] Logging residues
[B] Tallow
[C] Fish oil
[D] Manure
Show Answer
Correct Answer: A [Logging residues]
Notes:
The forestry material used as biomass is accumulating residues. Tallow, fish oil, and manure belong to animal products used as biomass.
36. What is an autonomously repeating circular extra-chromosomal DNA?
[A] Bacteria
[B] Nitrogenous base
[C] RNA
[D] Plasmid
Show Answer
Correct Answer: D [Plasmid]
Notes:
A plasmid is an autonomously repeating circular extra-chromosomal DNA. They naturally exist in bacterial cells, and they also occur in some eukaryotes.
37. Which of the following is known as animal starch?
[A] Glycogen
[B] Cellulose
[C] Chitin
[D] Glucose
Show Answer
Correct Answer: A [Glycogen]
Notes:
Glycogen, the principal storage form of glucose in animal cells, sometimes called “animal starch” for its resemblance with starch found in plants. It is stored in liver and muscle cells and can be converted to glucose if needed. In the liver this conversion is regulated by the hormone glucagon.
38. Which of the following cell organells are present only in plant cell?
[A] Lysosomes
[B] Plastids
[C] Mitochondria
[D] Cell membrane
Show Answer
Correct Answer: B [Plastids]
Notes:
The plastid is a major double-membrane organelle found in the cells of plants. Plastids are the site of manufacture and storage of important chemical compounds used by the cell. Plastids often contain pigments used in photosynthesis, and the types of pigments present can change or determine the cell’s colour.
39. Which is the effect of antigen in an ill person?
[A] It increases the production of antibiotics
[B] It increases the production of W.B.C.
[C] It increases the production of anti-serum against bacteria
[D] It prevents the growth of bacteria
Show Answer
Correct Answer: A [It increases the production of antibiotics]
Notes:
Vaccines containing antigens are introduced into the body, stimulating the immune system response by instructing B cells, with assistance from T cells, to produce antibodies. Antibodies are produced to fight the weakened or dead viruses in the vaccine. The immune system prepares to destroy real and stronger viruses in the future. When new antigens enter the body, white blood cells called macrophages engulf them; process the information contained in the antigens, and send it to the T cells to mobilise immune system. Hence, introduction of antigens in any form in body induces the production of antibodies to boost immunity.
40. Which is a water soluble Vitamin?
[A] Vitamin A
[B] Vitamin C
[C] Vitamin D
[D] Vitamin K
Show Answer
Correct Answer: B [Vitamin C]
Notes:
Water-soluble vitamins are those that dissolve in water upon entering the body. Because of this, body cannot store excess amounts of water-soluble vitamins for later use. There are a total of nine water-soluble vitamins: the B vitamins- folate, thiamine, riboflavin, niacin, pantothenic acid, biotin, vitamin B6 and vitamin B12 and vitamin C.
