Answer:
While a light microscope uses light to illuminate specimens and glass lenses to magnify images, an electron microscope uses a beam of electrons to illuminate specimens and magnetic lenses to magnify images. The resolution (the level of image detailing) is the main difference between these two microscopes.
A compound light microscope is a microscope with more than one lens and its own light source. In this type of microscope, there are ocular lenses in the binocular eyepieces and objective lenses in a rotating nose piece closer to the specimen.
Answer:
The correct answer is D) Inhibits cell wall synthesis.
Explanation:
Antimicrobial drugs are drugs that act against microbes like bacteria, fungus, virus, protozoa, etc. These drugs must be specific and should not harm the host cells but must be effective against microbial cell.
Both microbes and humans contain proteins, cytoplasmic membrane, and nucleic acid therefore antimicrobial drugs that target these structures can harm the host cell.
As human lack cell wall, therefore, the antimicrobial drug which inhibit cell wall synthesis will not be able to harm humans and will selectively kill the cells that contain cell wall like bacteria. Therefore the right answer is D.
Well, there are four main blood types with two variations of each (so 8 in all):
A+
A-
B+
B-
AB+
AB-
O+
O-
Now, A blood has the presence of the A antigen in it, and so it can't mix with B blood (most of the time).
B blood has the B antigen.
AB has BOTH antigens in it
O has no antigen whatsoever.
So if AB has both antigens, wouldn't it be able to receive antigens from A and/or antigens from B? And same with O, which has no antigens, which has no effect on whatever type of blood it's introduced in (which is why O is considered "the universal donor").
Now, the difference between + & - is simple, and has almost no impact on a person. If a person has +, they have Rh in their blood (it's another type of antigen), and if a person has -, the Rh factor isn't there. So if a person has positive, they have Rh, so more Rh blood can be added to it, and so can blood without the presence of Rh.
Hope this helps!
The answer would be Cement,Bricks, and rock salt because in Florida they mine for hard materials
False. It is usually bright red!