Endosymbiotic Theory

_____ and _____ are organelles that arose from endosymbiosis

• nucleus and cell membrane

• mitochondria and chloroplasts

• cell wall and chloroplasts

• mitochondria and nucleus

Tags

NGSS.HS-LS4-2

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.

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.HS-LS4-2

The theory of Endosymbiosis explains

• The origin of eukaryotes

• How bacteria live

• How species develop

• Why cells rely on one another

____________ & _________________ are organelles that definitely arose from endosymbiosis.

• Nucleus and cell membrane

• Chloroplast and mitochondria

• Mitochondria and nucleus

• Cell wall and chloroplast

"Endosymbiosis" means

• Living together

• Entering together

• Living separately

• Joining together

Tags

NGSS.HS-LS4-1

Both eukaryotic and prokaryotic cells have:

ribosomes

cell membranes

• false

• true

Mitochondria and chloroplasts have their own DNA.

• true

• false

Tags

NGSS.HS-LS3-1

Mitochondria , chloroplast , and bacteria are similar in size.

• true

• false

Mitochondria and chloroplast do not divide on their own.

• false

• true