Biology MCQs

Which organelle is primarily responsible for ATP production in a eukaryotic cell?

In DNA base pairing, which nitrogenous base always pairs with Cytosine?

Which process describes the movement of water molecules across a selectively permeable membrane from an area of high water concentration to an area of low water concentration?

Which enzyme is responsible for unwinding the DNA double helix during replication?

In the human circulatory system, which vessels carry oxygenated blood away from the heart?

Which part of the brain is primarily responsible for regulating balance and motor coordination?

What is the primary product of photosynthesis that provides energy for plant cells?

Which hormone is primarily responsible for regulating blood glucose levels by promoting glucose uptake in cells?

In which stage of mitosis do the sister chromatids separate and move toward opposite poles of the cell?

Which structure in a bacterial cell is responsible for protein synthesis?

What is the primary function of the lymphatic system?