Biology, asked by suteerthpedamale, 6 months ago

difine eukaryotes and prokaryotes ?​

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Answered by sahoorudramadhab2007
1

Prokaryotic cells can be defined as those cells which does not have well defined nucleus. Examples of Prokaryotic cells include single celled organisms like bacteria. ... Eukaryotic cells have a well defined nucleus. A few examples of Eukaryotic celled organims include Animal cells, Plant Cells, Fungi, and Protists.

Answered by balendradubey5bd
13

Answer:

All living organisms can be sorted into one of two groups depending on the fundamental structure of their cells: the prokaryotes and the eukaryotes. Prokaryotes are organisms made up of cells that lack a cell nucleus or any membrane-encased organelles. Eukaryotes are organisms made up of cells that possess a membrane-bound nucleus that holds genetic material as well as membrane-bound organelles.

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Prokaryotes Vs. Eukaryotes: What Are the Differences?

Comparing the Two Basic Types of Cells

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Illustration depicting a prokaryotic cell and a eukaryotic cell, with their important features labeled.

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By Laura Klappenbach

Updated January 29, 2020

All living organisms can be sorted into one of two groups depending on the fundamental structure of their cells: the prokaryotes and the eukaryotes. Prokaryotes are organisms made up of cells that lack a cell nucleus or any membrane-encased organelles. Eukaryotes are organisms made up of cells that possess a membrane-bound nucleus that holds genetic material as well as membrane-bound organelles.

Understanding Cells and Cell Membranes

The cell is a fundamental component of our modern definition of life and living things. Cells are regarded as the basic building blocks of life and are used in the elusive definition of what it means to be "alive."

Cells keep chemical processes tidy and compartmentalized so individual cell processes do not interfere with others and the cell can go about its business of metabolizing, reproducing, etc. To achieve this, cell components are enclosed in a membrane which serves as a barrier between the outside world and the cell's internal chemistry. The cell membrane is a selective barrier, meaning that it lets some chemicals in and others out. In so doing it maintains the chemical balance necessary for the cell to live.

The cell membrane regulates the crossing of chemicals in and out of the cell in three ways including:

  • Diffusion (the tendency of solute molecules to minimize concentration and thus move from an area of higher concentration towards an area of lower concentration until concentrations equalize)
  • Osmosis (the movement of solvent across a selective boundary in order to equalize the concentration of a solute that is unable to move across the boundary)
  • Selective transport (via membrane channels and membrane pumps)
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