* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Chapter 3, Section 1
Survey
Document related concepts
Tissue engineering wikipedia , lookup
Cell membrane wikipedia , lookup
Signal transduction wikipedia , lookup
Cell nucleus wikipedia , lookup
Cell encapsulation wikipedia , lookup
Programmed cell death wikipedia , lookup
Extracellular matrix wikipedia , lookup
Cellular differentiation wikipedia , lookup
Cell growth wikipedia , lookup
Cell culture wikipedia , lookup
Cytoplasmic streaming wikipedia , lookup
Cytokinesis wikipedia , lookup
Organ-on-a-chip wikipedia , lookup
Transcript
3.2 Cell Organelles Topic: Cell Organelles Objective: Identify the functions of the major cell organelles. 3.2 Cell Organelles EUKARYOTES VS PROKARYOTES --Eukaryotic (EU sounds like DO) cells have a nucleus “kary” means kernel or nucleus --Prokaryotic cells (PRO sounds like NO) do not have a nucleus. • Prokaryotic cells do not have membrane-bound organelles either 3.2 Cell Organelles Cells have an internal structure. • The cytoskeleton has many functions. – “cyto” means cell….” – supports and shapes cell – helps position and transport organelles – provides strength 3.2 Cell Organelles Several organelles are involved in making and processing proteins. • The nucleus stores genetic information 3.2 Cell Organelles Several organelles are involved in making and processing proteins. • Endoplasmic Reticulum (ER) assists in transportation through the cell • There are two types: – rough endoplasmic reticulum – smooth endoplasmic reticulum 3.2 Cell Organelles Several organelles are involved in making and processing proteins. (continued) • Ribosomes link amino acids to form proteins • Golgi apparatus processes, sorts, packaGes and delivers proteins 3.2 Cell Organelles Several organelles are involved in making and processing proteins. (continued) • Vesicles are membrane-bound sacs that hold materials. 3.2 Cell Organelles Other organelles have various functions. • Mitochondria supply energy to the cell 3.2 Cell Organelles Other organelles have various functions. • Vacuoles are fluid-filled sacs that hold and store materials like food and water – WAY BIGGER IN PLANT CELLS! 3.2 Cell Organelles Other organelles have various functions. • Lysosomes contain enzymes to digest material 3.2 Cell Organelles Other organelles have various functions. • Centrioles are tubes – Centrioles help divide DNA. – Only in ANIMAL CELLS 3.2 Cell Organelles Plant cells have cell walls and chloroplasts. • A cell wall provides rigid support– Only in PLANT cells and some bacteria 3.2 Cell Organelles Plant cells have cell walls and chloroplasts. • Chloroplasts convert solar energy to chemical energy (photosynthesis). Only in PLANT cells.