Question:- Name an asteroid that is located at the Lagrangian points, L4 and L5 and lie in the same orbit as Jupiter? A. Eros B. Pallas C. Trojan D. Vesta
Answer:- Ans. C Explanation: Trojan asteroids are located at the Lagrangian points, L4 and L5 and lie in the same orbit as Jupiter.
Question:- Name the group of asteroids that cross Earths orbit and also may come close to Earth or even collided with the planet? A. Apollo B. Vesta C. Davida D. Juno
Answer:- Ans. A Explanation: One group of asteroids known as Apollo objects, cross the orbit of Earth. These bodies sometimes may come relatively close to Earth and some have even collided with the planet.
Question:- Name an asteroid that has a dog-bone shape? A. 216 Kleopatra B. 25143 Itokawa C. 2062 Aten D. 21 Lutetia
Answer:- Ans. A Explanation: An asteroid in dog-bone shape is 216 Kleopatra. It is of the size of New Jersey that orbits the Sun between Mars and Jupiter.
Question:- Who had coined the term asteroid? A. Carl Sagan B. William Herschel C. Issac Newton D. Edmond Halley
Answer:- Ans. B Explanation: William Hershel coined the name asteroid.
Question:- 1. Which of the following diseases are caused due to a virus? A. Ebola B. AIDS C. SARS D. All the above
Answer:- Ans. D Explanation: Viral diseases are diseases that are caused due to virus namely AIDS, Ebola, Influenza, SARS (Severe Acute Respiratory Syndrome), Chikungunya, Small Pox, etc.
Question:- Name the virus that is transmitted through the biting of infected animals, birds, and insects to a human? A. Rabies Virus B. Ebola Virus C. Flavivirus D. All the above
Answer:- Ans. D Explanation: Transmission of the virus through the biting of infected animals, birds, and insects to humans is known as Zoonoses. Examples: Rabies virus. Alphavirus, Flavivirus, Ebola virus, etc.
Question:- Based on host range, viruses are classified into: A. Bacteriophage B. Insect virus C. Stem Virus D. Both A and B
Answer:- Ans. D Explanation: There are four different types of viruses based on the type of host namely Animal viruses, Plant viruses, Bacteriophage and Insect virus.
Question:- In the host cell, replication of RNA virus took place in... A. Nucleus B. Cytoplasm C. Mitochondria D. Centriole
Answer:- Ans. B Explanation: An example of the replication of the virus within the cytoplasm in the host cell is all RNA virus except the influenza virus.
Question:- Which of the following statement is correct about viruses? A. Viruses do not contain a ribosome. B. Viruses can make protein. C. Viruses can be categorised by their shapes. D. Both A and C are correct
Answer:- Ans. D Explanation: Viruses do not contain ribosomes, so they cannot make proteins. That is why they are dependent on their host. Viruses have different shapes, sizes and can be categorised by their shapes.
Question:- Name the virus that covers himself with a modified section of the cell membrane and create a protective lipid envelope? A. Influenza virus B. HIV C. Neither A nor B D. Both A and B
Answer:- Ans. D Explanation: Some viruses cover themselves with a modified section of the cell membrane by creating a protective lipid envelope example the influenza virus and HIV.
Question:- A virus can spread through: A. Contaminated food or water B. Touch C. Coughing D. All the above
Answer:- Ans. D Explanation: Viruses can spread through touch, exchanges of saliva, coughing or sneezing, contaminated food or water and also through insects that carry them from one person to another.
Question:- After which period virus replicates in the body and starts to affect the host? A. Incubation period B. Uncoating C. Penetration D. None of the above
Answer:- Ans. A Explanation: Virus replicates in the body and starts to affect the host after a period known as the incubation period and symptoms may start to show.
Question:- Double-stranded DNA is found in which viruses? A. Poxviruses B. Poliomyelitis C. Influenza viruses D. None of the above
Answer:- Ans. A Explanation: Double-stranded DNA is found in poxviruses, the bacteriophages T2, T4, T6, T3, T7, Lamda, herpes viruses, adenoviruses, etc.
Question:- A virus is made up of a DNA or RNA genome inside a protein shell known as: A. Capsid B. Host C. Envelope D. Zombies
Answer:- Ans. A Explanation: A virus that is made up of a DNA or RNA genome inside a protein shell is known as a capsid. Some viruses have an external membrane envelope.