Endosymbiotic Theory Review

What theory that states that chloroplast and mitochondria evolved from ancient bacterial cells that were engulfed by other one celled organisms? (spelling counts)

What bacteria became ingested by other bacteria and is believed to have evolved into the mitochondria?

• anaerobic bacteria

• aerobic bacteria

• cyanobacteria

• eubacteria

Which statement is false about chloroplast and mitochondria?

• They have their own set of DNA

• They have double membranes

• They are organelles

• They divide at the same time as the cell

What bacteria could undergo photosynthesis and was believed to have evolved into the chloroplasts of eukaryotic cells that we have today?

• aerobic bacteria

• anaerobic bacteria

• cyanobacteria

• eubacteria

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

Two students are reading an article about the evidence of the endosymbiotic theory. As they are reading, they have drawn images of what they believe to be occurring on index cards. The two students are engaging in a discussion on how the index cards should be ordered to accurately show the evolution of eukaryotic cells. Use the diagram to answer the question. Which statement below is accurate about the discussion above?

• student A has a correct ordering of index cards but incorrect reasoning.

• student B has a correct ordering of index cards and correct reasoning.

• Student A has a correct ordering of index cards and correct reasoning.

• Student B has a correct ordering of index cards but incorrect reasoning.

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

NGSS.HS-LS4-4

_____ and _____ are organelles that arose from endosymbiosis

• nucleus and cell membrane

• mitochondria and chloroplasts

• cell wall and chloroplasts

• mitochondria and nucleus

Which of the following is evidence to support the endosymbiotic theory?

• Mitochondria and chloroplasts have their own DNA, which is similar to prokaryotic DNA.

• Fossil evidence shows that the first forms of life were prokaryotic cells.

• All eukaryotic cells have a double-layered membrane composed of phosplipids and proteins.

• Prokaryotes have the same number and types of enzymes as eukaryotes.

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

The Endosymbiotic Theory explains

• the origin of prokaryotes

• how bacteria lives

• the origin of eukaryotes

• how species develop

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

What is the endosymbiotic theory?

• The endosymbiotic theory states that all cells are identical in structure.

• The endosymbiotic theory describes how plants evolved from fungi.

• The endosymbiotic theory explains the process of photosynthesis in bacteria.

• The endosymbiotic theory explains the origin of eukaryotic cells from prokaryotic organisms through symbiosis.

What evidence do scientists use to prove the endosymbiotic theory?

• Presence of chloroplasts in all cells

• All cells have a single membrane structure

• Mitochondria are only found in plant cells

• Evidence includes double membranes, DNA similarity to bacteria, independent replication, and prokaryotic-like ribosomes.