Multiple Choice
According to the endosymbiotic theory, what are the ancestors of chloroplasts in all plant cells?
233
views
5. Cell Components
Endosymbiotic Theory
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of these statements are both true and support the endosymbiosis theory?
A
Mitochondria and chloroplasts are surrounded by a single membrane.
B
Mitochondria and chloroplasts are produced by the endoplasmic reticulum.
C
Mitochondria and chloroplasts have their own DNA similar to bacterial DNA.
D
Mitochondria and chloroplasts can survive independently outside the cell.
Verified step by step guidance1
Understand the endosymbiosis theory: It suggests that mitochondria and chloroplasts originated as free-living bacteria that were engulfed by a host cell, leading to a symbiotic relationship.
Evaluate the statement about membranes: Mitochondria and chloroplasts are actually surrounded by a double membrane, not a single membrane, which supports the idea of them being engulfed by a host cell.
Consider the statement about DNA: Mitochondria and chloroplasts contain their own DNA, which is circular and similar to bacterial DNA, supporting the endosymbiosis theory.
Analyze the statement about production by the endoplasmic reticulum: Mitochondria and chloroplasts are not produced by the endoplasmic reticulum; they replicate independently within the cell.
Examine the statement about independent survival: Mitochondria and chloroplasts cannot survive independently outside the cell, as they have become integrated into the cellular environment over time.
Related Videos
Related Practice
Endosymbiotic Theory practice set
Problem sets built by lead tutorsExpert video explanations