The glomerulus is a cluster of: MCQ with Answer and Explanation

Explanation:
Creutzfeldt-Jakob disease (CJD) is a rare, fatal prion disease causing rapid neurodegeneration and sponge-like brain tissue. Alzheimer's involves amyloid plaques, Huntington's is genetic, Parkinson's involves dopamine deficiency.

Explanation:
Glucagon is a peptide hormone secreted by the alpha cells of the pancreatic islets in response to low blood glucose levels (hypoglycemia). Its primary target is the liver, where it acts to raise blood glucose levels. It stimulates glycogenolysis (the breakdown of stored glycogen into glucose) and gluconeogenesis (the synthesis of new glucose from non-carbohydrate sources like amino acids and glycerol). It also promotes the breakdown of fats (lipolysis) in adipose tissue. It has the opposite effect of insulin.

Explanation:
Chondrichthyes are cartilaginous fishes with a skeleton made entirely of cartilage, a ventral mouth, and lack operculum. Pristis (sawfish), Scoliodon (dogfish), and Carcharodon (great white shark) belong to this class. Labeo rohita (Rohu) and Catla catla are Osteichthyes (bony fishes). Hippocampus (seahorse) is also a bony fish. Exam tip: Chondrichthyes = cartilaginous; Osteichthyes = bony.