Bacteria

Front

What is the main characteristic that defines bacteria?

Back

Bacteria are prokaryotes, meaning they lack a nucleus and membrane-bound organelles.

Front

What are the two main types of bacteria based on their cell wall structure?

Back

Gram-positive and Gram-negative.

Front

What shape can bacteria take?

Back

Bacteria can be spiral, rod-like, or spherical.

Front

What is a common beneficial role of bacteria in the environment?

Back

Bacteria decompose organic materials, recycling nutrients back into the ecosystem.

Front

Are all bacteria harmful to humans?

Back

No, not all bacteria are harmful; many are beneficial and essential for processes like digestion.

Front

What is the process by which bacteria reproduce?

Back

Bacteria reproduce asexually through a process called binary fission.

Front

What is an autotrophic bacterium?

Back

An autotrophic bacterium can produce its own food, typically through photosynthesis or chemosynthesis.

Front

What is a heterotrophic bacterium?

Back

A heterotrophic bacterium obtains its food by consuming organic matter.

Front

What is the role of bacteria in food production?

Back

Bacteria are used in the fermentation process to produce foods like yogurt, cheese, and sauerkraut.

Front

What is the significance of bacteria in oxygen production?

Back

Certain bacteria, like cyanobacteria, produce oxygen through photosynthesis.