IB 1108 L10 Cell Structure PDF

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Biology lab ib 1108 L10 on cell structure...

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Cell Structure and Function PRE-LAB QUESTIONS 1. Identify three major similarities and differences between prokaryotic and eukaryotic cells. Mitochondria and a nucleus are found in a eukaryotic cell and Prokaryotic cells don't have organelles. Some similarities are they both have ribosomes, cytoplasm, and plasma membrane.

2. Where is the DNA housed in a prokaryotic cell? Where is it housed in a eukaryotic cell? The DNA in a prokaryotic cell is found in the nucleoid region, and in a eukaryotic cell in the nucleus.

3. Identify three structures which provide support and protection in a eukaryotic cell. Cell membrane and cell wall and cytoskeleton and cytoplasm.

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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:

A _______chromosomes_______________

B________Nucleus______________

C________cytoplasm______________

D_______Cell wall_______________

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Cell Structure and Function 2. What is the difference between the rough and smooth endoplasmic reticulum? The rough is riddled with ribosomes which gives its appearance. The smooth does have ribosomes.

3. Would an animal cell be able to survive without mitochondria? Why or why not? No they could not survive. Without a mitochondria the animal would not be able to convert energy to ATP and it would not be able to create cellular respiration.

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?

Without a nucleus or

mitochondria and a cell wall it would be a prokaryotic cell.

5. Hypothesize why parts of a plant, such as the leaves, are green, but other parts, such as the roots, are not. Use scientific reasoning to support your hypothesis. If leaves are green and roots are not then it would be due to the chloroplast in the leaves which absorbs sunlight and roots don't absorb sunlight so they wouldn't be green.

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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? Chlororplast, ribosomes and microbodies.

2. Is there any difference in the structure of the two cells? Specifically the cell wall in the plant makes the cell more stiff.

3. What structures do organisms that lack cell walls have for support? The cytoskeleton, cell membrane and cytoplasm.

4. How are organelles in a cell like organs in a human body? All of the organelles work in harmony for the whole cell to work properly, like the human body.

5. How does the structure of a cell suggest its function? List three examples. The bone cell looks more rigid because its job is to support the body, the nerve cells are longer because they have to send electrical messages in the body, and blood cells are smaller and more spaced out to fit through smaller spaces.

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