Advertisements
Advertisements
Question
Mitochondria DNA is ______.
Options
Naked
Circular
Double-stranded
All of the above
Advertisements
Solution
All of the above
Explanation:
Mitochondrial DNA (mtDNA) is a naked, circular, double-stranded genetic material that is not part of chromosomes. It is constantly exposed to the matrix, which contains many reactive oxygen species and free radicals.
Circular: Like bacterial DNA, it has a circular shape, reflecting the evolutionary origin of mitochondria from prokaryotic ancestors (endosymbiotic theory).
Double-stranded: It consists of two complementary strands, forming a stable double-helix structure.
Naked: Unlike nuclear DNA, mitochondrial DNA is not associated with histone proteins.
Mitochondrial DNA codes for essential proteins involved in cellular respiration and ATP production, supporting the energy needs of the cell.
APPEARS IN
RELATED QUESTIONS
Plasma membrane is Fluid-structure due to presence of ______.
Answer the following question.
Plants have no circulatory system? Then how cells manage intercellular transport?
How cytoplasm differs from nucleoplasm in chemical composition?
Distinguish between smooth and rough endoplasmic reticulum.
Label the diagram and write down the detail of the concept in your word.
Label the diagram and write down the detail of concept in your word.
Label the A, B, C, and D in the above diagram and write the functions of organells A and B.
Identify cell structure or organelle from it's the description below.
Carrys out photosynthesis
Identify cell structure or organelle from it's the description below.
Manufactures ATP in animal and plant cells.
Identify cell structure or organelle from its description below.
Selectivelly permeable.
