Question

Different between
(A) Bone and cartilage.
(B) Cell wall and cell membrane.

Answer 1

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(A) Bone and cartilage :

Bone :

• A bone is a rigid that constitutes part of the vertebrate skeleton.
• Bones protect the various organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, and enable mobility.

Cartilage :

• Cartilage is a tough, flexible connective tissue, that reduces friction between joints, holds bones together.
• Main function is to connect bones together. It is also found in the joints, the rib cage, the ear, the nose, the throat and between the bones of the back.

(B) cell wall and cell membrane :

Cell wall :

• A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid.

Cell membrane :

• The cell membrane (also known as the plasma membrane (PM) or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates the interior of all cells from the outside environment (the extracellular space) which protects the cell from its environment.

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Answer 2

Bone and Cartilage Bone is hard and inflexible, porous, blood vessels are present & matrix is made up of protein and mineral salts (eg: calcium phosphate)

On the other hand, cartilage is flexible, non-porous, blood vessels are absent and matrix is made up of protein.

Cell wall and cell membrane

Cell wall is found in plant cell and cell membrane is found in animal cell.