In the endocrine system, the hormone 'Oxytocin' is synthesized in the hypothalamus but is stored and released by the: MCQ with Answer and Explanation

Explanation:
Adenosine triphosphate (ATP) is the universal energy currency of the cell, storing energy in its high-energy phosphate bonds. Hydrolysis to ADP releases energy for cellular work. NADH and FADH₂ are electron carriers in respiration, ultimately used to produce ATP. Glucose is a fuel molecule, broken down to produce ATP. ATP is directly used in processes like muscle contraction and active transport.

Explanation:
Ruminants like cows, sheep, and goats have a four-chambered stomach (rumen, reticulum, omasum, abomasum) to digest cellulose via microbial fermentation. Cats and dogs have simple stomachs, pigs are monogastric.

Explanation:
Lysosomes contain about 40 types of hydrolytic enzymes (hydrolases) like proteases, lipases, nucleases, glycosidases, which digest macromolecules. They function in acidic pH (5.0). Oxidoreductases catalyze oxidation-reduction, transferases transfer groups, isomerases catalyze isomerization. Lysosomes are involved in autophagy, phagocytosis, and programmed cell death. Their rupture leads to autolysis, hence called 'suicide bags'.