Explanation

Sesamoid bones are extremely small bones found in within muscles or tendons (e.g., the kneecap or patella).

They protect tendons from stress and wear.

Explanation

Ascorbic acid, also known as Vitamin C

It is used as an anti-oxidant to keep fruit from darkening.

Additional information:

Enzyme browing is a chemical process that occurs in fruits and vegetable.

By the enzyme polyphenal oxidase, which result in brown pigments.

Explanation

Diphtheria is a bacterial infection caused by Corynebacterium diphtheriae.

It affects the respiratory system.

It can lead to serious complications if untreated.

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

Explanation

• Argon (Ar) is a noble gas that is not typically associated with acid rain.

Acid rain is caused by the presence of pollutants in the air, such as:

• Sulfur dioxide (SO2)
• Nitrogen oxides (NOx)
• Oxygen (O2) plays a role in the formation of acid rain, as it reacts with SO2 and NOx to form acidic compounds.

Explanation

Hepatitis is not a bacterial disease; it is caused by viruses (like Hepatitis A, B, C).

Tuberculosis and Pneumonia (in many cases) are caused by bacteria.

Explanation

Explanation

A baby’s heartbeat starts before he is born.

It typically around six or seven weeks into pregnancy.

As the heart begins to develop and function while the fetus is still in the womb.

Explanation

Typhoid and Cholera are both waterborne diseases that can be caused by drinking contaminated water.

• Typhoid fever is a bacterial infection caused by Salmonella Typhi, which can be spread through contaminated food and water.
• Cholera is a diarrheal disease caused by Vibrio cholerae, which can be spread through contaminated food and water, as well as through person-to-person contact.