أجهزة الجسم الداخلية ووظائفها

The process by which cells use oxygen to convert nutrients into energy (ATP).

Enzymes speed up chemical reactions in the digestive system, breaking down food into smaller molecules that can be absorbed by the body.

pH measures the acidity or alkalinity of a solution. In the body, it's important for maintaining the proper balance between acids and bases for optimal function.

Higher temperatures generally increase enzyme activity, speeding up chemical reactions. Conversely, lower temperatures slow down enzyme activity.

Dietary enzymes do not provide the body with essential nutrients. They are not a replacement for healthy eating.

A slight change in pH can affect the speed of chemical reactions in the body, but it does not inherently change the body's overall chemical performance.

While high blood pressure can have serious health consequences, it doesn't directly alter the chemical reactions occurring within the body.

Oxygen is used in cellular respiration, not broken down in the process. It acts as a fuel source to produce energy.

Temperature changes do indeed affect the rate of chemical reactions, but they don't alter the fundamental chemical processes themselves.