All controlled experiments would have only one variable. If there were more than one variable the outcome of your experiment could be for multiple reasons and thus you would not be able to test whether your specific hypothesis was valid.
Answer:
Function: Cell signalling; Location: Cell membranes
Explanation:
Receptors are usually trans-membrane proteins located on cell membranes. Their extracellular part transmits chemical signals from outside the cell into the intracellular where a response is induced.
Answer:
A
Explanation:
The components of salt water are chemically combined together and looks throughout, forming a homogeneous mixture.
The answer you my friend are looking for is D
Answer:
Parenchyma – They are living cells and walled, soft in nature due to the presence of thin-walled cells. Collenchyma – These are characterized by uneven thick-walled living cells. Sclerenchyma – They have cells with thickened lignified walls, providing them strength and making them waterproof.
Explanation:
i got that from my biology notes
