Problem 4 Mycoplasmas, unlike other prokar... [FREE SOLUTION]

Chapter 6: Problem 4

Mycoplasmas, unlike other prokaryotic cells, do not have a _.4.. ( 2 words)

Short Answer

Expert verified

Cell wall.

Step by step solution

Understand the Structure of Prokaryotic Cells

Prokaryotic cells typically have a cell wall which provides rigidity and structure, protecting the cell from its environment. This feature is common in most bacterial cells.

Identify Mycoplasmas as a Unique Group

Mycoplasmas are a unique group of bacteria known for their distinct characteristic of lacking a cell wall. This makes them different from most other prokaryotic cells.

Conclude the Missing Component

Since Mycoplasmas do not have a cell wall, the two missing words that complete the sentence regarding Mycoplasmas when compared to other prokaryotic cells are 'cell wall.'

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Prokaryotic Cells

Prokaryotic cells are the simplest form of life, primarily characterized by the absence of a nucleus and membrane-bound organelles. They are generally smaller and simpler in structure compared to eukaryotic cells.
These cells are found in two main domains of life: Bacteria and Archaea. Despite their simplicity, prokaryotic cells carry out all necessary functions to sustain life in a wide range of environments.
A typical prokaryotic cell contains a single circular DNA molecule located in a region called the nucleoid, ribosomes for protein synthesis, and sometimes structures such as flagella or pili for movement and attachment.

Prokaryotic cells lack a membrane-bound nucleus.
They reproduce asexually through binary fission.
They are usually smaller in size than eukaryotic cells.

Cell Wall

The cell wall is a rigid layer that provides structural support and protection to cells. Most prokaryotic cells, especially bacteria, possess a cell wall.
This structure plays a crucial role in maintaining the cell's shape, preventing it from bursting in hypotonic environments, and providing an extra layer of defense against external threats.
In bacteria, the cell wall is primarily composed of peptidoglycan, a complex of sugars and amino acids. However, the composition can vary, especially in different types of bacteria.

Provides protection against mechanical stress.
Determines the shape of the bacterium.
Contains peptidoglycan in bacteria.

While the majority of bacteria have a cell wall, mycoplasmas are a notable exception as they lack one.

Bacteria

Bacteria are diverse microorganisms that fall under the category of prokaryotic cells. They are incredibly adaptable and can be found in almost every environment on Earth.
Bacteria can be beneficial, as in the human gut where they help with digestion, or harmful, causing diseases such as tuberculosis and strep throat.
Most bacteria have a cell wall that provides structure, but some, like mycoplasmas, do not, which makes them flexible and able to assume various shapes.

Can be classified as Gram-positive or Gram-negative based on cell wall structure.
Reproduce through binary fission.
Essential for processes such as nitrogen fixation and decomposition.

Understanding the nature of bacteria and their structural differences helps in developing antibiotics and other treatment methods.

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91影视

Mycoplasmas, unlike other prokaryotic cells, do not have a _.4.. ( 2 words)

Short Answer

Step by step solution

Understand the Structure of Prokaryotic Cells

Identify Mycoplasmas as a Unique Group

Conclude the Missing Component

Key Concepts

Prokaryotic Cells

Cell Wall

Bacteria

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