This document discusses negative feedback mechanisms in the endocrine system and the production of digestive enzymes in specialized cells. It describes how high temperature, osmoreceptors and pancreatic receptors activate negative feedback loops to regulate various systems. The document then outlines the process by which specialized cells produce and transport digestive enzymes, from DNA transcription and protein synthesis to modification and release of the enzymes via vesicles.

1. Factor and negative feedback
Factor
High Temperature receptor
System: Endocrine
Mechanism :
Low
High Osmoreceptor
System : endocrine
Mechanism :
Low
High Receptor in the pancreas
System : endocrine
Mechanism :
Low
Higher/
lower
System : respiratory , excretory and circulatory system
Uniqueness of the cell
What are the uniqueness of the cell?
Specialization
Division of labor
Cooperation and
coordination
Production of the enzymatic cell
Specialized in production of enzymes
Keeps the protein-making information of DNA
Sends genetic message to Ribosomes
Provides surface area and allows for protein synthesis
Transport new synthesized proteins in vesicles to Golgi apparatus
Carbohydrates added to the protein to form glycoproteins
Glycoproteins are pinched off and transported to cell membrane
Reach cell membrane , vesicles releases glycoprotein out of the cell as
digestive enzyme.
Energy supplier

2. Draw the pictures of the cellular components in the production of a digestive enzyme.
Pancreatic cells - nucleus - rough endoplasmic reticulum - ribosomes - vesicles - mitochondria
Specialized cell - Plants and animals
Name Structure Specialized function
5 animals
3 plants