Explanation

The pressure of oxygen in the lungs is 104 torr. 

The partial pressure of oxygen in the lungs, also known as the alveolar partial pressure of oxygen (PaO2),

It is the pressure exerted by oxygen within the alveoli.

At sea level, atmospheric pressure is 760 mmHg.

Since oxygen makes up approximately 21% of air,

The partial pressure of oxygen in atmospheric air is 0.21 x 760 mmHg = 159.6 torr

However, as air enters the alveoli, it mixes with water vapor and carbon dioxide, which slightly reduces the oxygen partial pressure.

Therefore, the actual partial pressure of oxygen in the alveoli is around 104 torr. 

Explanation

Lamarckism posits that evolution occurs through the inheritance of acquired characteristics, though this theory has since been disproven.

Explanation

Zinc is an essential trace element, meaning it is required by the body in small amounts for various physiological processes, such as immune function, wound healing, protein synthesis, and DNA replication.

Explanation

Permanent teeth are also known as:

• Adult teeth
• Secondary teeth

Explanation

Amino acids are a product of the digestion of proteins.

During digestion, proteins are broken down into amino acids.

They are then absorbed and used by the body for various functions.

Explanation

An early sign of anoxia is headache.

Headaches can occur due to reduced oxygen levels affecting the brain.

It often preceding more severe symptoms like cyanosis or confusion.

Explanation

The most comfortable position for a patient with congestive heart failure is High Fowler.

This position helps ease breathing by reducing abdominal pressure on the diaphragm and improving lung expansion.

Explanation

Chloroplasts are the organelles responsible for photosynthesis in plant cells

And contain chlorophyll, which captures light energy.

In plants and algae, which developed much later, photosynthesis occurs in a specialized intracellular organelle—the chloroplast.

Chloroplasts perform photosynthesis during the daylight hours.

Explanation

A wound should be covered with a roller bandage to prevent infection and dirt from getting inside.

Explanation

Cole crops is also known as brassicas.

They are a group of vegetables belonging to the Brassicaceae family.

Including cabbage, cauliflower, broccoli, and knol-khol (kohlrabi).