What is a spore?

What is a spore?

• A. A hard, thick-walled capsule formed by some bacteria that contains only the essential parts of the protoplasm of the bacterial cell
• B. A soft coat surrounding all bacteria
• C. A type of virus that invades spores
• D. A gooey core of bacteria

Answer: (A)

A spore is a dormant, highly resistant form that certain bacteria form to survive harsh conditions. It’s a hard, thick-walled capsule that encloses the essential genetic material and a minimal amount of cytoplasm, protected by additional layers like a cortex and a spore coat. This structure allows the organism to endure heat, desiccation, chemicals, and radiation and then return to an active, vegetative state when conditions improve (germination). This differs from a simple capsule around bacteria, which is a soft protective layer some bacteria have for virulence and adhesion but does not represent a dormant, highly resistant cell. It’s also not a virus or a gooey core; spores are distinct, specialized survival forms produced by specific bacterial species.

A spore is a dormant, highly resistant form that certain bacteria form to survive harsh conditions. It’s a hard, thick-walled capsule that encloses the essential genetic material and a minimal amount of cytoplasm, protected by additional layers like a cortex and a spore coat. This structure allows the organism to endure heat, desiccation, chemicals, and radiation and then return to an active, vegetative state when conditions improve (germination).

This differs from a simple capsule around bacteria, which is a soft protective layer some bacteria have for virulence and adhesion but does not represent a dormant, highly resistant cell. It’s also not a virus or a gooey core; spores are distinct, specialized survival forms produced by specific bacterial species.