The type of solution researchers should use to cause blood cells to lyse (burst) would be a hypoosmotic solution. It is a solution which has lesser solute concentration in relation with another solution. For instance, a cell of a fish from fresh water would be hypoosmotic to salt water.
"if it is not a cat then it is a lion" is the contrapositive statement.
<h3>what is contrapositive statement ?</h3>
Contrapositive statement is a conditional statement, by exchanging the hypothesis and conclusion and negating both of it.
The contrapositive statement is a combination of the converse and inverse statements.
The contrapositive of any true proposition true, of true statement is also true and of false statement is also false.
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They can respond to external stimuli
The twisted shape of DNA is called Double Helix
The answer is b because it bet fits