Answer:
All living things are made of cells
Cells form from previously existing cells
Explanation:
According to the Cell Theory, all forms of life are composed of one or more cells, whereby cells are the fundamental building blocks in all living organisms. All cells are composed of inorganic molecules (e.g., water) and carbon-based organic molecules (e.g., carbohydrates, lipids, nucleic acids, etc). All the new cells arise from the division of pre-existing cells. Louis Pasteur showed cells would only grow in broth if they are exposed to air (oxygen), thus refuting the idea of spontaneous generation. In multicellular eukaryotic organisms, these cells can be organized in tissues, organs and organ systems.
<em>Hypotonic solutions contain a low concentration of solute relative to another solution ( The cells cytoplsm) </em>
<u>Thus, when a cell in placed in a hypotonic solution, the water diffuses into the cell, which causes the cell to swell up. </u>
<em>The cell has lower solute concentration than the solution. So the solution is HYPERTONIC and the cell is HYPOTONIC. </em>
As a result, a cell that does not have a rigid cell wall, such as a red blood cell, t'will most definitely swell and burst when placed in a hypotonic solution.
Answer:
A new study provides a key insight into a milestone event in the early evolution of life on Earth -- the origin of the cell nucleus and complex cells. Scientists peered deep inside current living cells, known as Archaea - the organisms that are believed to most closely resemble the ancient intermediates between bacteria and the more complex cells that we now know as eukaryotic cells.
Explanation:
Hope this helps
A fish with gills,
A leopard with spots
A bird with its feathers
