Any condition in an experiment that can be changed is a control variable!!
You control it!!
Enzymes speed up the chemical reaction that takes place in cells. they are also important for digestion and metabolism.
<span>False. E.coli is generally about 2 micrometers in size compared to white blood cells which are around 13 micrometers in size. Also, white blood cells have a characteristic segmented nucleus with two to five lobes joined by fine strands of chromatin.</span>
Answer:
B
Explanation:
if the vibration has a low frequency then the sounds gonna be low as well as a high frequency having a higher sound
Answer:
D. Use the polymerase chain reaction
Explanation:
Polymerase chain reaction (PCR) is a molecular technique used to make multiple copies or amplify a particular DNA sample. This enables scientist conduct thorough genetic analysis on minute sample of DNA, simply by amplifying it to a large quantity.
The PCR machine is usually used to amplify DNA fragment. The DNA fragments undergo three major steps successively: denaturation, annealing and elongation
