Lab 10 PDF

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Cell Structure and Function PRE-LAB QUESTIONS 1. Identify three major similarities and differences between prokaryotic and eukaryotic cells. Eukaryotic cells contain membrane-bound nucleus, mitochondria, ribosomes are smaller in prokaryotes than eukaryotes, dna is linear in eukaryotes vs circular in prokaryotes 2. Where is the DNA housed in a prokaryotic cell? Where is it housed in a eukaryotic cell? Prokaryotic dna is in the nucleoid bu tis not surrounded by a membrane, eukaryotic is found in a membrane bound nucleus 3. Identify three structures which provide support and protection in a eukaryotic cell. Cell membrane, cell wall, and cytoskeleton

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Cell Structure and Function EXPERIMENT 1: IDENTIFYING CELL STRUCTURES Post-Lab Questions 1. Label each of the arrows in the following slide image:

1.

2.

A ________chromosomes______________

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B___________nucleus___________

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C__________cytoplasm____________

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D_________cell wall_____

2. What is the difference between the rough and smooth endoplasmic reticulum? Ribosomes attach to ER, creating rough er, rough and smooth er are usually interconnected 3. Would an animal cell be able to survive without mitochondria? Why or why not? The cell would have to rely on anaerobic respiration, and would rely on oxygen for respiration, it would likely not be enough to survive in a more complex organism 4. What could you determine about a specimen if you observed a slide image showing the specimen with a cell wall, but no nucleus or mitochondria? It would be a prokaryotic cell 5. Hypothesize why parts of a plant, such as the leaves, are green, but other parts, such as

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Cell Structure and Function the roots, are not. Use scientific reasoning to support your hypothesis.

Theres no sunlight, so it wouldn’t make them appear green, leaves have chlorophyll and roots don’t because they receive energy/ nutrients differently

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Cell Structure and Function EXPERIMENT 2: CREATE A CELL Post-Lab Questions 1. What cell structures did you place in the plant cell that you did not place in the animal cell? I put a chloroplast, and cell wall in the plant cell 2. Is there any difference in the structure of the two cells? Well they are slightly different, for example the plant cell is more square and the animal cell is round, plant has a cell wall, 3. What structures do organisms that lack cell walls have for support? They have a cell membrane 4. How are organelles in a cell like organs in a human body? They are things that serve specific functions and support the overall object. Organelle just means little organs, so its just a tinier version of what organs are like to the human body overall 5. How does the structure of a cell suggest its function? List three examples. Depending on its structure it lets the cell have certain things go in our out, it can help protect it and keep its shape and function, for example, Cell membrane, it’s responsible for keeping the barrier without a cell wall, it helps keep things in, cell walls provide protection, flagella can suggest they need mobility, nucleus in a cell houses and passes on dna.

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