Multiple Choice
Both plant and animal cells have mitochondria because they both primarily need to:
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11. Aerobic Respiration
Mitochondria
Multiple Choice
Mitochondria possess all of the following features except:
A
Cristae formed by infoldings of the inner membrane
B
A peptidoglycan cell wall surrounding the organelle
C
Their own circular DNA and ribosomes
D
A double-membrane structure with an intermembrane space
Verified step by step guidance1
Step 1: Understand the structure and features of mitochondria. Mitochondria are double-membrane organelles found in eukaryotic cells, known for their role in energy production through oxidative phosphorylation.
Step 2: Review the key features of mitochondria: they have an outer membrane and a highly folded inner membrane called cristae, which increase the surface area for ATP production.
Step 3: Recognize that mitochondria contain their own circular DNA and ribosomes, which allow them to produce some of their own proteins independently of the cell's nuclear DNA.
Step 4: Identify that mitochondria do not have a peptidoglycan cell wall. Peptidoglycan is a component of bacterial cell walls, not found in mitochondria, which are surrounded only by their double membranes.
Step 5: Conclude that the feature 'A peptidoglycan cell wall surrounding the organelle' is not a characteristic of mitochondria, making it the correct exception in the list.
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