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Concept 25.3: Prokaryotes vs Eukaryotes Quiz

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Concept 25.3: Prokaryotes vs Eukaryotes Quiz

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Questions and Answers

What is a defining characteristic of eukaryotes?

Proteins for O2 metabolism

Presence of a nucleus (correct)

Smaller ribosomes (70S)

Lack of internal membranes

Which cellular component is unique to plant cells and absent in animal cells?

Chloroplasts (correct)

Mitochondria

Tiny ribosomes

Big ribosomes

What is the main difference between prokaryotic and eukaryotic ribosomes?

Size - prokaryotes have bigger ribosomes (correct)

Shape - eukaryotic ribosomes are more rounded

Presence of proteins - only eukaryotes have ribosomal proteins

Location - prokaryotic ribosomes are in the cytoplasm

What does endosymbiosis demonstrate about the origins of chloroplasts and mitochondria?

They were once free-living bacteria Signup and view all the answers

What evidence supports the idea that chloroplasts and mitochondria evolved from bacteria?

Double membrane structure Signup and view all the answers

Which statement accurately distinguishes between aerobic and photosynthetic bacteria?

Aerobic bacteria have enzymes for O2 metabolism, while photosynthetic bacteria do not. Signup and view all the answers

What key characteristic helps distinguish prokaryotes from eukaryotes?

Absence of a nucleus Signup and view all the answers

Which organelle is the result of endosymbiosis according to the text?

Mitochondria Signup and view all the answers

What evidence supports the evolutionary relationship between chloroplasts and bacteria?

Double membrane structure Signup and view all the answers

What distinguishes aerobic bacteria from photosynthetic bacteria based on the information provided?

Enzymes for O2 metabolism in membrane Signup and view all the answers

Which type of cell contains both mitochondria and chloroplasts according to the text?

Plant cell Signup and view all the answers

What is a distinguishing feature of eukaryotic ribosomes compared to prokaryotic ribosomes?

Size of ribosomes Signup and view all the answers