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Below are the choices:
homogenous mixture
<span>heterogeneous mixture </span>
<span>semi mixture
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You want to decorate the bottom of an aquarium with brightly colored rocks of different shapes and sizes. this describes a homogenous mixture<span>
</span>
<span>The word hetero means different. Since the rocks are varied i assume it would be a heterogeneous mixture.</span>
Answer:
The plasma membrane is made up by a phospholipid bilayer with embedded proteins that separates the internal contents of the cell from its surrounding environment. Only relatively small, non- polar materials can easily move through the lipid bilayer of the plasma membrane.
Explanation:
The National Institutes of Health found it effective in reducing pain and other symptoms, but it is not clear how it works.
Answer:
This is because Protons are moving down a concentration gradient.
Doctors inject medicines in veins because veins are more accessible and donot have high pressure due to which there is no risk of blood backing up with into the infused fluid.
However there are some cases when medicine is injected in artery but a lot of precautions needs to be taken while doing so.
