[Solved] Which anaplerotic reaction balances the input of oxaloacetate with acetyl-CoA in the citrate cycle by converting pyruvate into oxaloacetate? A) pyruvate carboxylase B) malate dehydrogenase C) malic enzyme D) pyruvate kinase HIV: Human Immunodeficiency Virus (HIV) is a virus that attacks and weakens the immune system, leading to a progressive failure of immune response and increased susceptibility to infections and diseases. AIDS: Acquired Immunodeficiency Syndrome, a life-threatening condition caused by the human immunodeficiency virus (HIV), leading to a severe weakening of the immune system. Infectious Agent: A biological entity that can cause disease or illness to its host, such as bacteria, viruses, fungi, or parasites. Coronary Heart Disease: A condition characterized by the narrowing of the coronary arteries due to the buildup of plaque, leading to reduced blood flow to the heart muscle.