18 Questions
Which process did Lynn Margulis propose for the evolution of mitochondria and plastids?
Endosymbiosis
What is a common feature of both mitochondria and plastids that supports the endosymbiosis theory?
Double membrane structure
Which organelles are believed to have evolved from Bacteria based on the endosymbiosis theory?
Mitochondria and plastids
What is a function commonly associated with plastids?
Photosynthesis
One common feature between mitochondria and plastids is their ability to:
Generate ATP
Which of the following is NOT a common feature between mitochondria and plastids?
Production of oxygen
What is the main reason why the single cell photosynthetic organisms extracted from the lake are concluded to be eukaryotes and not bacteria?
The thylakoids are stacked and there is a double membrane around the compartment.
Which feature of plastids contradicts the belief that they only have a single purpose of photosynthesis?
Involvement in lipid synthesis
Which statement best supports the endosymbiosis theory regarding the origin of plastids?
Plastids have circular DNA similar to prokaryotes.
Which feature of plastids differentiates them from bacteria and supports their eukaryotic nature?
Development of phycobilisomes
What feature of mitochondria enables them to produce energy efficiently through aerobic respiration?
Development of cristae
How do chloroplasts respond to and minimize damage caused by excess light exposure?
They activate antioxidant enzymes like superoxide dismutase.
Which organelle is involved in the synthesis of ATP in all eukaryotes?
Mitochondria
What is the function of outer membrane invaginations termed cristae?
Synthesize ATP in all eukaryotes
Which protein mediates vesicle trafficking by interacting with v-SNARES to facilitate fusion with target membranes?
t-SNARES
What is the main mediator of anterograde trafficking of vesicles from the endoplasmic reticulum (ER) to Golgi?
COPII vesicles
Which organelle is responsible for mediating the GTP-dependent movement of cargo along actin filaments?
Mitochondria
What feature of mitochondria supports the endosymbiotic theory?
Divided by a bacterial-derived GTPase FtsZ
Test your knowledge on the structure and function of mitochondria in eukaryotic cells. Choose the correct statement that best describes the role of mitochondria in cellular processes.
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