Biology

Most nutrient molecules are absorbed in the small intestine because it has a large surface area with villi and microvilli that facilitate nutrient absorption. The stomach mainly digests food, the liver processes nutrients but does not absorb them, and the large intestine absorbs water and some minerals, not most nutrients.

An adult human typically has 206 bones. This number can vary slightly due to anatomical differences, but 206 is the widely accepted standard count.

Fruits that develop without fertilization and thus do not contain seeds are called parthenocarpic fruits. Bananas are a common example of such seedless fruits.

The total blood volume in a normal adult human is approximately 5-6 liters, which is the widely accepted standard range in physiology.

Hemoglobin is a protein in red blood cells that contains iron, which binds oxygen for transport in the blood. Iron is the main constituent responsible for oxygen binding, making option B correct.

Red blood corpuscles, or red blood cells, are primarily formed in the bone marrow, which is the soft tissue inside bones responsible for hematopoiesis.

Hemoglobin is a protein in red blood cells responsible for transporting oxygen from the lungs to body tissues. This is its primary function, making option A correct.

The average adult resting pulse rate typically ranges from 60 to 100 beats per minute, with a common average around 72-80 bpm, making option C the most accurate choice.

The primary function of the kidney is to remove waste products and excess substances from the blood, forming urine. This helps maintain the body's chemical balance and remove toxins.

Dolly is famously known as the first mammal cloned from an adult somatic cell, specifically a sheep, making option A correct.