Prokaryotic Cells

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What are prokaryotic cells?

Back

Prokaryotic cells are simple, single-celled organisms that lack a nucleus and membrane-bound organelles. They include bacteria and archaea.

Front

What is the main characteristic that distinguishes prokaryotic cells from eukaryotic cells?

Back

Prokaryotic cells lack a nucleus, while eukaryotic cells have a nucleus that contains their DNA.

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What are the three main shapes of bacteria?

Back

The three main shapes of bacteria are: 1. Coccus (spherical) 2. Bacillus (rod-shaped) 3. Spirilli (spiral-shaped).

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What is the function of ribosomes in bacterial cells?

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Ribosomes are responsible for protein synthesis in bacterial cells.

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What is the role of the cell membrane in prokaryotic cells?

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The cell membrane controls the movement of substances in and out of the cell and helps maintain the cell's integrity.

Front

What is the significance of bacteria in the environment?

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Bacteria play essential roles in nutrient cycling, decomposition, and can also be involved in processes like nitrogen fixation.

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How do bacteria reproduce?

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Bacteria primarily reproduce asexually through a process called binary fission, where one cell divides into two identical cells.

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What is the difference between pathogenic and non-pathogenic bacteria?

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Pathogenic bacteria can cause disease, while non-pathogenic bacteria are harmless and can even be beneficial.

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What is the function of the bacterial cell wall?

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The cell wall provides structural support and protection to the bacterial cell, helping it maintain its shape.

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What is an example of a beneficial bacterium?

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Lactobacillus is a beneficial bacterium used in yogurt production and helps in digestion.