Download Week 18 - Crossroads Academy

5th Grade Science
Dr. Whipple
Week 18
Jan 9th – 13th, 2017
In class this week we will:
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Discuss the application questions from the homework assignment –
which is now due on Thursday Jan. 12th.
Compare prokaryotic and eukaryotic cells
Compare and contrast the cell structure of animal and plant cells
View premade slides of plant and animal cells under the light
microscope
Some new terminology we will begin using:
• Eukaryote
• Prokaryote
• Cytoplasm
• Organelles
• Cell wall versus cell membrane
• Endoplasmic reticulum
• Ribosomes
• Golgi apparatus
• Mitochondria
• Cristae
• Plastid
• Chloroplasts
• Stroma
• Thylakoids
• Grana
• Chlorophyll
• Nucleus
• Cilia
Some general concepts we will be covering:
• Prokaryotic cells lack true nuclei and other bodies bound by membranes.
• Eukaryotic cells contain membrane bound nuclei such as a nucleus.
• The cytoplasm is a souplike fluid containing water, dissolved substances
and many small organelles
• The Endoplasmic reticulum (ER) is a network of flattened sacs and tubes
that form channels throughout the cytoplasm. Plays a major role in protein
synthesis, secretion, and storage.
• Ribosomes – critical to the formation of proteins
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Mitochondria – the powerhouses of the cell
Chloroplasts –specialized organelle in plant (and algae) cells that perform
photosynthesis
Homework:
Some practical applications of the concepts: (try to answer these on your own by
Thursday, Jan. 12th. Please rewrite the question followed by your answer neatly on
a separate sheet of paper)
1) How does prokaryotic and eukaryotic DNA structure differ?
2) What is the difference between rough ER and smooth ER?
3) Differentiate between grana and thylakoids. Why is it fair to say that these
“coin stacks” of grana are vital to life as we know it on our planet today?
(one word hint….chlorophyll)
4) Compare and contrast an animal and plant cell – use the following terms
and clearly state how the two cell types are either similar or different.
Terms: cell wall, cell shape, cytoplasm, mitochondria, ribosomes, plasma
membrane, nucleus, cilia, chloroplasts.
** Recopy your notes each night on the day that you take them! **