Question Discussion & Solution

The Correct Answer is 24.

Key Points

• Human ribs are flat bones that form part of the rib cage to help protect internal organs.
• Humans usually have 24 ribs, in 12 pairs.
• The first seven pairs are attached directly to the sternum by costal cartilages and are called true ribs.
• The 8th, 9th, and 10th pairs are called false ribs, they do not join the sternum directly but are connected to the 7th rib by cartilage.

Additional Information 

• Human ribs are flat bones that form part of the rib cage to help protect internal organs.
• Humans usually have 24 ribs, in 12 pairs.
• Only 1 in 500 people have an extra rib known as a Cervical rib. 
• At the front of the body, most of the ribs are joined by costal cartilage to the sternum.
• Ribs connect to vertebrae at the costovertebral joints.

The correct answer is 37 °C.

Key Points

• The normal temperature of the human body is 37 °C.
• A temperature above 100.4 °F(38°C) most often means you have a fever caused by an infection or illness.
• Normal human body temperature is the prototypical temperature range found in humans.
• The normal human body temperature border is typically stated as 36.5–37 °C (97.7–98.6 °F).
• Human body temperature changes, it depends on gender, age, time of day, exertion level, health status, what part of the body the measurement is taken at, state of consciousness (waking, sleeping, sedated), and emotions.
• Body temperature is kept in the normal range by thermoregulation, in which adaptation of temperature is triggered by the central nervous system.

Key Points 

• The biosphere reserves are the areas meant for the conservation of biodiversity.
• These are large areas of protected land for the conservation of wildlife, plant and animal resources and traditional life of the tribals living in the area.
• The biosphere reserves help to maintain the biodiversity and culture of that area.
• A biosphere reserve may also contain other protected areas.
• The Pachmarhi Biosphere Reserve consists of one national park named Satpura and two wildlife sanctuaries named Bori and Pachmarhi

Additional Information

• There are18 biosphere reserves in India:-
  • Cold Desert, Himachal Pradesh
  • Nanda Devi, Uttrakhand
  • Khangchendzonga, Sikkim
  • Dehang-Debang, Arunachal Pradesh
  • Manas, Assam
  • Dibru-Saikhowa, Assam
  • Nokrek, Meghalaya
  • Panna, Madhya Pradesh
  • Pachmarhi, Madhya Pradesh
  • Achanakmar-Amarkantak, Madhya Pradesh-Chhattisgarh
  • Kachchh, Gujarat
  • Similipal, Odisha
  • Sundarban, West Bengal
  • Seshachalam, Andhra Pradesh
  • Agasthyamala, Karnataka-Tamil Nadu-Kerala
  • Nilgiri, Tamil Nadu-Kerala 
  • Gulf of Mannar, Tamil Nadu
  • Great Nicobar, Andaman & Nicobar Island

The Correct Answer is Magnetic Force.

• Magnetic resonance imaging ( MRI) is one of the most popular medical imaging methods used in the world at many diagnostic centers.
• These MRI scanners use strong magnetic fields, gradients of the magnetic field, and radio waves to produce images of the organs inside the body.
• The magnetic force is a component of the electromagnetic force, one of nature's four basic forces, which is induced by charge movement.
• There would be a magnetic force of attraction between two objects containing charge in the same direction of motion, while objects in charge traveling in opposite directions have between them a repulsive force.

The correct answer is Fructose.

Key Points

•  Fructose
  • It is naturally occurring sugar.
  • It is the sweetest sugar.
  • It is a 'monosaccharide', meaning the simplest form of sugar, which means it cannot be broken down into more basic sugar units.
  • Other common examples of monosaccharides are glucose and galactose.
  • The chemical formula of fructose is C₆H₁₂O₆.

Additional Information

• Maltose
  • It is a very sweet sugar which is also known as maltitol sugar.
  • It is mostly found in honey.
  • Its molecular formula is C₁₂H₂₂O₁₁.
• Glucose
  • It is the most abundant monosaccharide, a carbohydrate sub-category.
  • During photosynthesis, glucose is primarily produced by plants and most algae from water and carbon dioxide, using energy from sunlight, where it is used to create the most abundant carbohydrate cellulose in cell walls.
  • The chemical formula of glucose is C₆H₁₂O₆.
• Sucrose
  • It is crystallized white sugar produced by the sugar cane plant and can be found in households and foods worldwide.
  • The formulae for sucrose is C12H22O11.
  • It is a disaccharide so when we hydrolyse it we will get one molecule of glucose and another molecule of fructose.
  • It is also known as table sugar.
  • The formulae for sucrose is C₁₂H₂₂O₁₁.