Explanation

In normal blood plasma, glucose is present at about 0.1% concentration, which is approximately 100 mg/dL.

This level is vital for supplying energy to body cells, especially the brain.

Explanation

Rice is rich in carbohydrates but low in protein and other essential nutrients.

A diet of rice alone can lead to protein deficiency, causing conditions like kwashiorkor.

Explanation

Natural rubber is classified as an elastomer, a type of polymer that can stretch and return to its original shape.

Elastomers are known for their elasticity and flexibility, making rubber ideal for tires, seals, and gloves.

Explanation

Protoplasm is the living substance inside a cell, including cytoplasm and nucleus, where water makes up about 70%.

Water is essential for maintaining the structure, function, and chemical reactions in the protoplasm.

Explanation

The cell membrane of cardiac muscle cells maintains an electrochemical gradient of sodium (Na⁺), potassium (K⁺), and calcium (Ca²⁺) ions.

These ions are crucial for generating and transmitting electrical impulses that cause heart contractions.

Explanation

Correct posture shows physical health, self-discipline, and confidence.

It reflects a positive personality, making a person appear more alert and self-assured.

Explanation

Explanation

Muscular endurance is the ability of muscles to perform repeated actions over a long period without fatigue.

It is essential for activities like running, swimming, and cycling.

Explanation

The human trunk includes:

• Vertebral column: 26 bones
• Ribs: 24 bones (12 pairs)
• Sternum: 1 bone
• Hyoid bone: 1 bone (sometimes included)
• Coccyx: 4 fused bones (counted as 1)

Total: 26 (vertebrae) + 24 (ribs) + 1 (sternum) + 1 (hyoid) + 4 (coccyx, counted as 1) = 58 bones

Explanation

In the RICES formula for injury treatment (Rest, Ice, Compression, Elevation, Stabilization), "C" stands for Compression.

Compression helps reduce swelling and internal bleeding after an injury.