Download Assignment # 35 Cell Organelles - Mr. Le`s Living Environment

Name:_______________________________
Period:_____
Aim: How do cell organelles carry out specialized function within a cell?
Assignment # 35
Instructions
1. Go to www.MrLeLivingEnvironment.weebly.com
2. Click on Powerpoint and click on Cell Organelles ppt
3. Study the ppt and use it to help you complete this assignment
Questions
1. What are the two key objectives (what you will learn) in this lesson?______________________________
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2. Why do we study cells? ___________________________________________________________________
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3. What are the 3 main jobs of cells? ___________________________________________________________
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4. Why do cells need energy? ________________________________________________________________
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5. What are organelles? _____________________________________________________________________
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6. Why are cell organelles important? __________________________________________________________
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7. Complete the chart below
Name of Cell Organelle
Cell Membrane
Cytoplasm
Vacuole
Lysosomes
Functions
Mitochondria
Ribosome
Nucleus
Endoplasmic Reticulum
Golgi Apparatus
8. How are plant cells different than animal cells? _____________________________________________
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Instructions
1. Go to www.MrLeLivingEnvironment.weebly.com
2. Click on Video Archive and click on the Cell Organelles Song
3. Watch the clip and use to help you complete this assignment.
9. Figure out who I am based on the clue/hint/picture.
Hint
I am the gatekeeper
Energy factory
The boss/brain of the cell
Thin and wavy network used for transportation
I package and sort proteins
I make proteins
I dissolve and break down damaged/dead organelles
I make food for the plant cells
Guess which organelle am I
Reading Comprehension: answer the questions below after you have finished reading this
article.
Organelles are small structures within cells that perform dedicated functions. As the name implies, you can
think of organelles as small organs. There are a dozen different types of organelles commonly found in
eukaryotic cells
It is important to know the basic facts about the following organelles.
Nucleus
This is where the DNA is kept and RNA is transcribed. The nucleus controls all activities inside the cell.
Ribosomes
Ribosomes are the sites of protein synthesis , where RNA is translated into protein. Protein synthesis is
extremely important to cells, and so large numbers of ribosomes are found throughout cells (often
numbering in the hundreds or thousands). Ribosomes exist floating freely in the cytoplasm, and also
bound to the endoplasmic reticulum (ER). ER bound to ribosomes is called rough ER because the
ribosomes appear as black dots on the ER in electron microscope photos, giving the ER a rough texture.
These organelles are quite small, made up of 50 proteins and several long RNAs intricately bound
together. Ribosomes have no membrane. Ribosomes disassemble into two subunits when not actively
synthesizing protein.
Mitochondria
Mitochondria are the sites of aerobic respiration, and generally are the major energy production
center in the cell.
Chloroplasts
These organelles are the site of photosynthesis in plants and other photosynthesizing organisms. They
also have a double membrane. There is a more complete description of the chloroplast here, in the
chapter on photosynthesis.
Endoplasmic Reticulum (ER)
The ER is the transport network for molecules targeted for certain modifications and specific final
destinations, as opposed to molecules that are destined to float freely in the cytoplasm. There are two
types of ER, rough and smooth. Rough ER has ribosomes attached to it, and smooth ER does not.
Golgi apparatus
This organelle modifies molecules and packages them into small membrane bound sacs called vesicles.
These sacs can be targetted at various locations in the cell and even to its exterior.
Lysosome
This organelle digests waste materials and food within the cell, breaking down molecules into their
base components with strong digestive enzymes .
Questions
1. Which organelle from the above list is the most important organelle inside the cell? Justify your answer.
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