1. Which part of the Central Nervous System controls “reflex Actions” ?
[A] Mesencephalon
[B] Rhombencephalon
[C] Medulla oblongata
[D] Spinal Chord
Show Answer
Correct Answer: D [Spinal Chord]
Notes:
The nervous system is made of two parts viz. Central Nervous System (CNS) and the Peripheral Nervous System (PNS). CNS is made of Brain [cerebrum, brainstem and cerebellum] and spinal cord. The PNS is made of nerves and neural ganglia. Further, the meninges (three membranes that envelop the brain and spinal cord) are also a part of the nervous system
2. Blood Plasma with which among the following removed is called Serum?
[A] Fibrin
[B] Thrombin
[C] Fibrinogen
[D] Collagen
Show Answer
Correct Answer: C [Fibrinogen]
Notes:
Plasma is 55% of the blood by volume and constitutes 5% of the body weight. Plasma is a pale yellow transparent clear fluid which consists of 90-92% water and 8-10% organic and inorganic substances. Organic substances are mainly plasma proteins viz. albumin, globulin, prothrombin and fibrinogen. Albumins are responsible for maintenance of osmotic pressure of Blood. Globulins are chief sites for formation of antibodies; while prothrombin and fibrinogen are essential for clotting of blood
3. Which among the following causes Hydrophobia?
[A] Virus
[B] Bacteria
[C] Protozoan
[D] worm
Show Answer
Correct Answer: A [Virus]
Notes:
Hydrophobia which is also known as Rabies is a viral disease that causes inflammation of the brain in humans and other mammals. Some of the early symptoms can include fever and tingling at the site of exposure.
4. A gene is a functional unit of ___?
[A] Life
[B] Cell
[C] DNA
[D] Chromosomes
Show Answer
Correct Answer: D [Chromosomes]
Notes:
A gene is a functional unit of chromosomes. They are made up of DNA. Some genes also act as instructions to make molecules called proteins. However, not all genes code for proteins.
5. Which among the following are called Thrombocytes?
[A] RBC
[B] WBC
[C] Platelets
[D] Serum
Show Answer
Correct Answer: C [Platelets]
Notes:
Thrombocytes which are also called as platelets are a component of blood whose function is to react to bleeding from blood vessel injury by clumping, thereby initiating a blood clot.
6. Which among the following virus is also called as “Hit & Hide” Virus?
[A] RSV Virus (respiratory syncytial virus )
[B] Dengue virus
[C] Influenza virus
[D] HIV virus
Show Answer
Correct Answer: A [RSV Virus (respiratory syncytial virus )]
Notes:
RSV Virus (respiratory syncytial virus) is also called as “Hit & Hide” virus. It causes infections of the lungs and respiratory tract. It is a major cause of lower respiratory tract infections.
7. The scientific study of organisms as affected by seasonal climates e.g. of bird migration, the opening of flowers, etc is called __?
[A] Phenology
[B] Phylogeny
[C] Phrenology
[D] Phycology
Show Answer
Correct Answer: A [Phenology]
Notes:
The scientific study of organisms as affected by seasonal climates e.g. of bird migration, the opening of flowers etc is called Phenology.
8. Which of the following cell organelles contain RNA?
[A] Plastids
[B] Mitochondria
[C] Ribosomes
[D] Lysosomes
Show Answer
Correct Answer: C [Ribosomes]
Notes:
Ribosomes are small organelles that contain RNA and specific proteins within the cytoplasm.
9. Which of the following is the fastest enzyme?
[A] Pepsin
[B] Carbonic anhydrase
[C] DNA polymerase
[D] DNA gyrase
Show Answer
Correct Answer: B [Carbonic anhydrase]
Notes:
An enzyme is a protein that acts as a catalyst in living organisms, and controls the rate of a chemical reaction inside the body. Carbonic anhydrase is mainly found in RBCs of blood cells, pancreatic cells, etc.
10. Which among the following is the sweetest sugar?
[A] Fructose
[B] Glucose
[C] Lactose
[D] Ribose
Show Answer
Correct Answer: A [Fructose]
Notes:
Fructose is a monosaccharide and is considered the sweetest sugar. It is mainly found in fruits, juices, honey and some vegetables. Like apple, onion, potato etc.
