Question

2. What is the difference between the rough and smooth endoplasmic reticulum?

3. Would an animal cell be able to survive without mitochondria? Why or why not?

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?

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.

Answer 1

2.

	Rough Endoplasmic reticulum	Smooth Endoplasmic reticulum
1.	It has attached ribosomes on its surface.	It lacks ribosomes on its surface
2.	It helps in protein synthesis and processing	It helps in the synthesis of lipids

3. Yes, an animal cell can survive without mitochondria by doing anaerobic respiration. For example mature mammalian red blood cells lack mitochondria still they can survive.

4. Specimen probably has a prokaryotic cell since it lacks nucleus and mitochondria. Prokaryotes don't have the nucleus as well as membrane bound cell organelles like Golgi apparatus, mitochondria etc.

5. Leaves are green because they contain a pigment known as the chlorophyll whereas roots don't have this pigment. Since leaves are involved in the process of photosynthesis they have this pigment whereas roots don't perform photosynthesis so they lack chlorophyll.