Explanation

• Camels have a special water storage space in their humps, which store fatty tissue.
• When food and water are scarce, the camel's body metabolizes the fatty tissue in the hump, providing energy and water.
• This allows camels to survive for extended periods without water.

Explanation

Calcium is crucial for:

• Building and maintaining strong bones and teeth
• Muscle function and contraction
• Nerve function and transmission
• Blood clotting and wound healing

Explanation

Vitamin K is essential for blood clotting and plays a crucial role in the production of platelets, which are vital for stopping bleeding when you're injured.

Vitamin K deficiency can lead to bleeding disorders, easy bruising, and poor wound healing.

Vitamin K helps to:

• Activate clotting factors in the liver
• Produce platelets in the bone marrow
• Form blood clots to stop bleeding

Explanation

• The camel is called the “ship of the desert”
• Because it travels easily on sand.
• It can survive long periods without water, making it ideal for desert transport.

Last updated 25-07-2026 by NA

Explanation

CRISPR is a modern biotechnology tool used to edit or modify genes with high precision.

It allows scientists to add, remove, or change specific DNA sequences.

Explanation

Normal blood calcium level is 8.5–10.5 mg/dL, which helps maintain nerve, muscle, and bone functions.

Levels below or above this range may indicate medical imbalance.

Explanation

The burning of wood is a chemical change because it involves a reaction

That transforms the wood into new substances, such as ash, carbon dioxide, and water vapor,

While also producing heat and light.

Unlike a physical change, this process is irreversible, meaning the original wood cannot be recovered. 

Explanation

The substance universally used to achieve the ultra-low temperatures required for the cryopreservation of biological samples is liquid nitrogen.

Nitrogen, in its liquid state, is the primary agent used to freeze and store cells, tissues, and organs. 

Liquid nitrogen provides an inert, ultra-low temperature environment of -196 °C (-321 °F),

Which effectively halts all biological activity and molecular motion, preserving the material for extended, even indefinite, periods. 

Explanation

Plants produce sugar and starch using sunlight through photosynthesis.

It is a process where light energy converts carbon dioxide and water into glucose and oxygen.

Explanation

CO₂ is absorbed by plants during photosynthesis to produce glucose and oxygen.

This process transfers carbon from the atmosphere to living organisms.