Endosymbiotic and Cell Theory

Which statement is NOT included in cell theory?

• All living organisms are composed of one or more cells.

• All cells contain a nucleus.

• Cells are the most basic unit of structure in organisms.

• All cells arise from pre-existing cells.

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NGSS.MS-LS1-1

Which organelles were once prokaryotes?

• Mitochondria & Chloroplasts

• Nucleus & Golgi Apparatus

• Rough ER & Smooth ER

• Ribosomes & Lysosomes

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NGSS.HS-LS4-1

According to the Endosymbiotic Theory, why are the ancestors to Eukaryotic cells Prokaryotes?

• Prokaryotic cells evolved

• Prokaryotes grew inside each other, increasing complexity

• Prokaryotic cells mutated, developing advantageous traits

• Prokaryotic cells grew together with eukaryotic organisms

What is an endosymbiont?

• The process of creating energy inside of a cell

• An ancient water bacteria that killed a strain of Irish potatoes

• An organism that lives inside another organism

• The event in which nutrients are oxidized and turned into CO2

Why do mitochondria and chloroplasts have DNA in them?

• They were once prokaryotic cells.

• They receive the DNA from the nucleus.

• They produce their own DNA through photosynthesis.

• They process the DNA of the cell.

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NGSS.HS-LS4-1

What piece of evidence SUPPORTS endosymbiotic theory?

• Some organelles have a double layer membrane

• Chloroplasts can also produce ribosomes

• Remnants of chitin have been found in the phospholipid bilayers of animal cells

• Turgor pressure is present in animal cells

How does the image above best support symbiogenesis?

• Both the bacterium and mitochondrion produce a form of energy

• The bacterium contains a phospholipid bilayer

• The mitochondrion has intrinsic DNA

• The bacterium contains a nucleus

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NGSS.HS-LS4-1

Which one of the organelles is ONLY found in Eukaryotic Cells?

• Ribomsomes

• Cell membrane

• Centrioles

• Cytoplasm

What function does having their own DNA serve in both chloroplasts and mitochondria?

• They help produce proteins and enzymes which are required to perform tasks

• They help oxidize ATP in electron chains

• They program the cell membranes to provide more nutrients to the organelle

• They provide rigidity to the organelles so cell destruction is more difficult

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NGSS.HS-LS2-3