Biology Questions

Spongy, porous bone tissue is also called cancellous bone.

Cancellous bone is found in bones that aren't generally under significant stress like in the shoulder blades, ribs, parts of the skull, and at the ends of long bones.

The only transport method that can move species against their concentration gradient i.e, from low to high concentration is called Active transport.

Facilitated diffusion only moves species down their concentration gradient i.e, from high to low concentration.

DNA is called the blueprint of life because it contains the instructions needed for an organism to grow, develop, survive and reproduce. DNA does this by controlling protein synthesis. Proteins do most of the work in cells, and are the basic unit of structure and function in the cells of organisms.

Mitochondria is the Organelle in which Cellular Respiration Occur.

There are nearly about 75000 enzymes of 3 classes are there in the human body. They are :

1. Metabolic Enzymes - Enzymes that help to run our Bodies

2. Digestive Enzymes - Enzymes that help in digesting Food

3. Food Enzymes - Enzymes from raw foods that start our Food digestion.

Plants grow in size both in height and in grith. Enlargement  of cells already present cannot contribute much to the growth. Only addition of more and more cells could increase the size of the plant considerably.

The best example for somatic mutation would be cancer, familial cancer (which transmits through gametes to the next generation) are not so common while sporadic cancer is seen the most where body cells of a particular area goes through mutations for a number of years and becomes cancerous, but it is not transmitted to next generation.