Origins of Life and Endosymbiotic Theory

The Endosymbiotic Theory explains

• the origin of prokaryotes

• how bacteria lives

• the origin of eukaryotes

• how species develop

Bacteria are an example of a ____ cell.

• prokaryotic

• eukaryotic

• plant

• animal

Tags

NGSS.MS-LS1-1

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.

Student A claims the order should be B, E, D, A, C. Their reasoning is that since the small circles without lines in the index cards represent chloroplasts, photosynthesizing organisms evolved before aerobic organisms.

Student B claims the order should be B, A, C, E, D. Their reasoning is that since the small ovals with lines in the index cards represent mitochondria, respiratory organisms evolved before photosynthesizing organisms

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.MS-LS4-2

_____ and _____ are organelles that arose from endosymbiosis

• nucleus and cell membrane

• mitochondria and chloroplasts

• cell wall and chloroplasts

• mitochondria and nucleus

Which type of cell does NOT contain membrane-bound organelles?

• plant cells

• animal cells

• prokaryotic cells

• eukaryotic cells

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.MS-LS4-2

Which type of cell? (It has a nucleus, membrane-bound organelles). Check all that apply.

• prokaryotic cell

• eukaryotic cell

• plant cell

• bacteria

Which has chloroplasts?

• prokaryotic cell

• plant cell

• animal cell

Tags

NGSS.MS-LS1-6

Are eukaryotes multicellular or unicellular?

• multicellular

• unicellular

• both unicellular and multicellular

Tags

NGSS.MS-LS1-1

NGSS.MS-LS4-2

Which of the following is NOT a characteristic of living things?

• growth and development

• ability to maintain homeostasis

• ability to talk

• ability to reproduce

Tags

NGSS.MS-LS1-5