A mutation that involves the change of a single nucleotide base in the DNA sequence is called a: MCQ with Answer and Explanation

Explanation:
Villi are microscopic finger-like projections on the inner lining of the small intestine, covered with microvilli (brush border), greatly increasing surface area for absorption of digested nutrients. Each villus contains a lacteal (lymph capillary) and blood capillaries. Alveoli are in lungs, nephrons in kidneys, cilia are hair-like projections on cells.

Explanation:
Hybridoma technology fuses antibody-producing B cells with immortal myeloma cells to create hybridomas that produce monoclonal antibodies. Developed by Kohler and Milstein.

Explanation:
The sperm cell is the smallest cell in the human body, about 5 µm in length (head). The ovum is the largest (about 100 µm diameter). RBCs are about 7-8 µm, neurons can be up to a meter long. Sperm cells are highly specialized for motility and genetic material delivery.