Cell Biology Answers

1. How do the endoplasmic reticulum and the Golgi bodies interact within an animal cell? (3 marks)
2. How is light important to a) plants, and b) animals? Give two different, specific examples for each type of organism. (4 marks)
3. Five major events in the history of life are listed below. Place these events in the (hypothesized) correct sequence of events, from earliest to most recent, in the evolution of life on Earth. Explain why you have placed each in that particular sequence. (5 marks)

A. Origin of chloroplasts

B.Origin of multicellular eukaryotes

C.Origin of mitochondria

D.Origin of aerobic heterotroph bacteria

E.Origin of animals

4.Explain how the endomembrane system, chloroplasts, and mitochondria are all

thought to have originated from ancient prokaryotes. What is the name of this

hypothesis, and what evidence supports it? (8 marks)

5.Compare and contrast (i.e. describe the similarities AND differences between) a

generalized animal cell and a generalized plant cell. (10 marks)