Chapter 4 Multiple Choice Questions

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. What are cyanobacteria?

Members of a group of heterotrophic bacteria correct incorrect

Members of a group of bacteria that carry out non-oxygenic photosynthesis correct incorrect

Members of a group of bacteria that carry out oxygenic photosynthesis correct incorrect

Members of a group of cyanide-producing bacteria correct incorrect

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. What is endosymbiosis?

It's a process where one organism lives on the surface of another organism called the host. correct incorrect

It's a process where one organism lives inside another organism called the host. correct incorrect

It's a process where two independent organisms live together for mutual benefit correct incorrect

It's a process where correct incorrect

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. What are the Archaeplastida?

Ancient plastids found in algae correct incorrect

A group of bacteria containing plastids correct incorrect

The red algae correct incorrect

All the descendants of the primary endosymbiotic event correct incorrect

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. What is primary endosymbiosis in algae?

Uptake of a cyanobacterial cell that becomes a plastid correct incorrect

Uptake of a chloroplast by an alga correct incorrect

Symbiosis between a eukaryote and a free-living cyanobacterium correct incorrect

Uptake and digestion of a cyanobacterial cell correct incorrect

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. When did the primary endosymbiotic event leading to algae occur?

About 4.0 Ga correct incorrect

About 100 Ma correct incorrect

Between 1.0 Ga and 500 Ma correct incorrect

Between 2.2 and 1.8 Ga correct incorrect

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. What is kleptoplasty?

Stealing and digestion of plastids by a eukaryotic cell correct incorrect

Stealing and temporary retention of functional plastids by a eukaryotic cell correct incorrect

Stealing of cyanobacterial photosynthetic apparatus by a eukaryotic cell correct incorrect

Stealing of eukaryotic cell contents by giant plastids correct incorrect

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. Cyanobacteria contain about 5,000 genes; how many genes are in a typical plastid?

About 200 correct incorrect

About 1,000 correct incorrect

About 3,000 correct incorrect

About 500 correct incorrect

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. How many types of plastid are in plants and algae?

One correct incorrect

About one hundred correct incorrect

None correct incorrect

About a dozen correct incorrect

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. How many types of plastid are in a single plant cell?

About a dozen correct incorrect

Normally only one correct incorrect

About one hundred correct incorrect

Between six and ten correct incorrect

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. What kind of genome is present in plastids?

Viral correct incorrect

Chimeric correct incorrect

Eukaryotic correct incorrect

Bacterial correct incorrect