General Science Questions with Answers

1. Iron is required for the formation of hemoglobin.

2. Hemoglobin is a part of red blood cells that carries oxygen and removes carbon dioxide (a waste product) from the body.

3. Iron is stored in the body mainly in hemoglobin.

1. Decrease in bone density and strength is called osteoporosis.

2. Osteoporosis is a condition in which bones become weak and brittle.

3. Women suffer from osteoporosis more often than men.

1. Anemia in humans is caused by a deficiency of Vitamin B12.

2. Vitamin B12 is a water-soluble vitamin

3. Which is necessary for the formation of red blood cells?

4. The most common cause of anaemia is low iron levels in the body. This type of anaemia is called iron deficiency anaemia.

Explanation:
 Nutrient                 Example

Protein                    Myosin

Carbohydrate         Sugar

Fat                            Cholesterol

Minerals Calcium, Phosphorus

1. Protein is one of the essential nutrients for the body. It is essential for building and repairing muscles, skin, hair, nails and other tissues. Myosin is a protein responsible for muscle contraction.

2. Carbohydrates are the main source of energy for the body. They are found in the form of starch, glucose and fiber. Sugar is a type of carbohydrate that is easily digested by the body and provides energy.

3. Fats are essential nutrients for the body. They help keep the body warm, produce hormones, and build cell walls. Cholesterol is a type of fat made by the body. It is essential for the body, but in excess can cause health problems.

4. Minerals are essential nutrients for the body. They form structural components of the body, help produce hormones, and regulate body functions. Calcium and phosphorus are two important minerals that are necessary for the formation of bones and teeth.

1. Plants in the Thallophyta group are commonly called algae.

2. Thallophyta group includes such plants which are produced without embryo.

3. This group includes algae and fungi. Other plants are included in Embryophyta.

4. Pteridophyta includes plants with vascular tissue.

1. Explain the structure and reproductive system of algae in 1935. It was from F.  E. Fritch.

2. The study of algae is known as phycology. It is also known as Algology.

3. Algae are largely aquatic (both fresh and sea water) organisms, which are chlorophyll bearing, simple, thalloid and autotrophic in nature.

1. Rickets is a bone disease caused by vitamin D deficiency.

2. Due to rickets, the absorption of calcium and phosphorus in the bones decreases.

3. The solution to protect exclusively breastfed babies from this disease is Vitamin D supplements.

1. Mercury poisoning is responsible for which of the following diseases called 'Mad Hatter's Disease'?

2. Mad Hatter's Disease is a form of mercury poisoning that affects the brain and nervous system.

3. There is a risk of mental and behavioural changes, such as confusion, hallucination, and irritability etc. in this disease.

1. Which is a special excretory cell found in Platyhelminthes which acts like a kidney, and the flame cell does the work of removing waste material through filtration?

1. The smallest bone in the human body is the stapes.

2. This bone is located in the middle ear.

3. The length of the stapes is about 3 millimeters.