What do the membranes inside of the cell do?December 18, 2013

Catalyst: Take out your summaries for sections 4.4 and 4.5

Complete the Prokaryotes vs Eukaryotes Worksheet

Reminders

• Character Surveys

• Write your summaries for each section after you are done reading

• MasteringBiology Ch. 4 due Sunday

• Complete missing assignments. The end of the semester is rapidly approaching.

Character Surveys - Parent

• Bryanna

• Daniel

• Najat

• Raquel

• Andee

• Christian

• Alexandria

• Salvador

• Kyara

• Xavier

• Andy

Character Surveys - Students

• Bryanna

• Raquel

• Christian

• Alexandria

• Xavier

• Andy

Agenda

• Endomembrane Systems

• ER

• Golgi

• Mitochondria

• Chloroplast

• Exit Slip and Review

Endoplasmic Reticulum

• Processes proteins and other molecules from the nucleus

• Packages molecules into vesicles

Smooth ER Rough ER

• Smooth Surface

• Lipid and Carbohydrate Metabolism

• Lack Ribosomes

• Detoxification

• Rough Surface

• Protein Synthesis

• Ribosomes Present

Golgi Apparatus

• Prepares proteins before they are sent off

Lysosomes

• Membranous sack that contains enzymes that catalyze hydrolysis

• Generated from Golgi

• Assist in phagocytosis - engulfing organisms or molecules

• Vacuoles that carry food particles or harmful agents are fused with lysosomes and hydrolyzed

Vacuoles

• Enclosed membrane containing water and enzymes

• May have food particles or other materials inside

• Formed by multiple vesicles binding together

http://learn.genetics.utah.edu/content/begin/cells/insideacell/

http://www.johnkyrk.com/CellIndex.html

Exit Slip

• Describe the structural and functional distinctions between the smooth and rough ER?

• Describe how transport vesicles integrate the endomembrane system.

• Imagine a protein that functions in the ER but requires modification in the golgi apparatus before it can achieve that function. Describe the protein’s path through the cell, starting with DNA that specifies the protein.

Mitochondria

Chloroplasts