The base that pairs with adenine in RNA is: MCQ with Answer and Explanation

Explanation:
The fluid mosaic model, proposed by Singer and Nicolson (1972), describes the plasma membrane as a phospholipid bilayer with proteins floating like icebergs in a sea of lipids. It accounts for membrane fluidity and selective permeability. The cell wall is rigid, nucleus has a double membrane, ribosome is a ribonucleoprotein complex.

Explanation:
A joint (articulation) is the site where two or more bones meet, allowing movement (synovial joints) or providing stability (fibrous and cartilaginous joints). Tendons connect muscle to bone, ligaments connect bone to bone. Cartilage is a connective tissue that cushions joints. The elbow, knee, and hip are examples of synovial joints.

Explanation:
Influenza (flu) is a respiratory illness caused by the influenza virus. Malaria is a parasitic disease caused by Plasmodium and transmitted exclusively by the bite of an infected female Anopheles mosquito. Leprosy (Hansen's disease) is a chronic infectious disease caused by the bacterium Mycobacterium leprae, not a fungus. Thus, statements 1 and 3 are correct.