Which organelle is called the 'kitchen of the cell'? MCQ with Answer and Explanation

Explanation:
Adrenocorticotropic hormone (ACTH), secreted by the anterior pituitary, stimulates the adrenal cortex to produce and release cortisol. TSH stimulates thyroid, FSH gonads, GH growth.

Explanation:
Amylase (ptyalin in saliva, pancreatic amylase in intestine) hydrolyzes starch (a polysaccharide) into maltose (a disaccharide) and dextrins. Lactase breaks lactose, lipase digests lipids, protease digests proteins. Salivary amylase works at neutral pH, pancreatic amylase in the small intestine. Maltase then breaks maltose into two glucose molecules.

Explanation:
Zinc is an essential micronutrient for plants, involved in the synthesis of the auxin indole-3-acetic acid (IAA) via the activation of tryptophan synthetase. Zinc deficiency causes 'little leaf' and 'rosette' diseases, stunted growth, and reduced internodes. Iron is needed for chlorophyll synthesis, manganese for photosynthesis, and boron for pollen germination.