31. How many bones are there in the average person’s body?
[A] 33
[B] 206
[C] 639
[D] It varies by individual
Show Answer
Correct Answer: B [206]
Notes:
206 bones are there in the average person’s body. These include the bones of the skull, spine, ribs, arms and legs. Bones are made up of connective tissue reinforced by calcium and specialized bone cells.
32. Monocytes differentiate into which kind of phagocytic cells?
[A] Neutrophil
[B] B cell
[C] Macrophage
[D] T cell
Show Answer
Correct Answer: C [Macrophage]
Notes:
Macrophages are specialized cells that are involved in the detection, phagocytosis, and destruction of bacteria and other harmful organisms. A monocyte is a type of white blood cell and it is a phagocyte.
33. Where Kidneys are present in our body?
[A] At back, just above the waist
[B] At back, behind lungs
[C] Near belly button
[D] Behind pancreas gland
Show Answer
Correct Answer: A [At back, just above the waist]
Notes:
The kidneys are present on either side of the spine at the lower level of the rib cage, in a distal part of the abdomen partially covered by ribs.
34. Which of the following vitamins is stored in the liver?
[A] Vitamin K
[B] Vitamin D
[C] Vitamin E
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Vitamin K, D, and E are stored in the liver. The liver is the chemical “factory” of the body.
35. Which of the following hormone are surges that trigger ovulation?
[A] Estrogen
[B] LH
[C] FSH
[D] Progesterone
Show Answer
Correct Answer: B [LH]
Notes:
LH hormones are surges that trigger ovulation. It is released by the anterior pituitary.
36. The point mutation results in a change in the codon, which then codes for another amino acid is called __
[A] Silent mutation
[B] Nonsense mutation
[C] Missense mutation
[D] None of these
Show Answer
Correct Answer: C [Missense mutation]
Notes:
The point mutation results in a change in the codon, which then codes for another amino acid is called Missense mutation.
37. Crossing-over occurs during ____:
[A] Diplotene
[B] Pachytene
[C] Leptotene
[D] Zygotene
Show Answer
Correct Answer: B [Pachytene]
Notes:
Chromosomal crossover (or crossing over) is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes. It is one of the final phases of genetic recombination, which occurs during prophase I of meiosis (pachytene) during a process called synapsis.
38. Carbon monoxide poisoning can be cured by
____:
[A] Drinking lemon-water
[B] Eating butter
[C] Exposing the affected person to fresh oxygen
[D] Consuming multi-vitamin tablet
Show Answer
Correct Answer: C [Exposing the affected person to fresh oxygen]
Notes:
Carbon monoxide poisoning can be cured by exposing the affected person to fresh oxygen. It is because CO posoning leads to oxygen starvation of body cells. This therapy involves breathing pure oxygen in a chamber in which the air pressure is about two to three times higher than normal. This speeds the replacement of carbon monoxide with oxygen in your blood. Hyperbaric oxygen therapy may be used in cases of severe carbon monoxide poisoning.
39. 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.
40. Jellyfish are an example of which type of phylum?
[A] Phylum -Protozoa
[B] Phylum -Porifera
[C] Phylum – Cnidaria
[D] Phylum -Ctenophora
Show Answer
Correct Answer: C [Phylum – Cnidaria]
Notes:
Cnidarian, also called coelenterate, any member of the phylum Cnidaria (Coelenterata), a group made up of more than 9,000 living species. ? Mostly marine animals, the cnidarians include the corals, hydras, jellyfish, Portuguese men-of-war, sea anemones, sea pens, sea whips, and sea fans.
