Bacteria, Viruses and Homeostasis

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is a virus?

Back

A virus is a microscopic infectious agent that can only replicate inside the living cells of an organism.

Front

What is bacteria?

Back

Bacteria are single-celled microorganisms that can exist either as independent organisms or as parasites.

Front

What is a positive feedback loop?

Back

A positive feedback loop is a process in which an initial change will bring about an additional change in the same direction.

Front

What is a negative feedback loop?

Back

A negative feedback loop is a process that counteracts a change, helping to maintain homeostasis.

Front

Give an example of a positive feedback loop in the human body.

Back

Childbirth process (oxytocin release) is an example of a positive feedback loop.

Front

Give an example of a negative feedback loop in the human body.

Back

Regulation of body temperature in humans is an example of a negative feedback loop.

Front

What is the correct order of biological organization from smallest to largest?

Back

Cells, Tissues, Organs, Organ Systems, Organisms.

Front

What role do bacteria play in the ecosystem?

Back

Bacteria play essential roles in nutrient cycling, decomposition, and as part of the food web.

Front

How do viruses differ from bacteria?

Back

Viruses cannot reproduce on their own and require a host cell, while bacteria can reproduce independently.