Sea lions use their back, hind flippers and front flippers to easily glide in the water.
Therefore, sea lions is the answer.
Answer:
true
Explanation:
it a must to published topic so dat people can help you
The type of microscope which would be the best tool to use to view the surface of a bacterial cell is a Scanning electron microscope.
This is because it can be used to look at the surface of objects at high resolution. Maximum magnification: Approximately 500,000x. Best for: Looking at surfaces of objects
<h3>What is a Microscope?</h3>
This refers to an optical instrument that is used for viewing very small objects and can be magnified several hundred times.
The type of microscope which would be the best tool to use to view the surface of a bacterial cell is a Scanning electron microscope.
This is because it can be used to look at the surface of objects at high resolution. Maximum magnification: Approximately 500,000x. Best for: Looking at surfaces of objects
Hence, we can see that your question is incomplete, so a general overview was given to you, and only the last question was answered.
Read more about microscopes here:
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They all have something in common
Answer;
Semi-permeability means that only certain molecules are allowed to pass through.
Explanation;
-Semi-permeability is one of the features of a cell membrane, which means that the membrane allows selective movement of materials in and out of the cell; that is only certain molecules can enter or leave the cell.
-For example smaller molecules such water and ions such as potassium and sodium ions are able to leave and enter the cell, while other molecules that are large such as protein molecules can not enter or leave the cell.