• The egg has the highest protein content among the listed options.
• It is considered a "complete protein" source because it contains all nine essential amino acids required by the human body.
• On average, one large egg provides approximately 6–7 grams of protein, which is about 12.6–13 grams of protein per 100 grams

Hydrochloric acid is the digestive fluid formed by the stomach during the process of digestion. 

Sheep (Dolly was the world's first mammal cloned from an adult cell, created in 1996 in Scotland using somatic cell nuclear transfer at the Roslin Institute.)

• Ptyalin is also called salivary amylase.
• It is secreted by the salivary glands in the mouth.
• Its main function is to digest starch.
• Ptyalin converts starch into maltose and dextrin.

• When a ball is thrown vertically upward, gravity acts downward, slowing the ball.
• As the ball goes up, its velocity decreases continuously.
• At the highest point, the ball stops for an instant before coming down.
• At that instant, the velocity becomes zero (but acceleration due to gravity is still present).

• Wind is the movement of air from high-pressure areas to low-pressure areas.
• When atmospheric pressure decreases in a region, it creates a low-pressure area.
• Air from surrounding high-pressure areas rushes toward the low-pressure area.
• This horizontal movement of air is called wind.

• A false ceiling is a secondary ceiling hung below the main roof/ceiling.
• It is used for thermal insulation (heat control).
• Also provides sound insulation.

• The Muslim scientist is Ibn al-Nafis.
• He is credited with explaining the pulmonary circulation of blood and recognizing the contagious nature of diseases, centuries before these ideas became known in Europe.

• An earthquake is measured using a seismograph (also called a seismometer).
• It records the vibrations of the Earth caused by seismic waves during an earthquake.