Explanation

Stomach wall secretes pepsin, which begins protein digestion.

Pancreas releases trypsin and chymotrypsin into the small intestine to further break down proteins.

Explanation

When functioning at its best, the human nose can distinguish between 4,000 and 10,000 different odors.

This range varies by individual sensitivity, genetic factors, and exposure to different smells.

Explanation

Protista includes both unicellular organisms like amoeba and multicellular organisms like algae.

Fungi also includes unicellular organisms like yeast and multicellular organisms like mushrooms and molds.

Explanation

Explanation

The limbic system is the part of the brain primarily involved in processing emotions and memory.

It includes structures like the amygdala and hippocampus that regulate emotional responses.

Explanation

The cochlea is a spiral-shaped organ in the inner ear responsible for converting sound vibrations into nerve signals.

It contains hair cells that detect sound and send signals to the brain via the auditory nerve.

Explanation

Cornea is the transparent, dome-shaped front part of the eye.

It allows light to enter and helps focus it onto the retina.

Explanation

Skin cells form the outermost layer of the body, acting as a protective barrier.

They shield internal organs and tissues from injury, pathogens, and dehydration.

Explanation

Amylase is the enzyme that breaks down starches into sugars, and it is secreted by the salivary glands during the process of digestion.

Explanation

The human body has around 600 muscles that help in movement, posture, and vital functions.

These include skeletal, smooth, and cardiac muscles.