Answer:
cells make up tissues, which make up organs. organs make up organ systems which make up organisms
Explanation:
The axe is an example of a simple machine, as it is a type of wedge<span>, or dual inclined plane. </span>
An aldehyde is an organic compound containing a group with the structure −CHO, consisting of a carbonyl<span> center </span><span>with the carbon atom also bonded to </span>hydrogen<span> and to an R group</span>
Answer:
increasing extension time
Explanation:
The Polymerase Chain Reaction is a technique widely used in molecular biology laboratories to amplify target DNA regions. The standard steps of a PCR are as follow 1-denaturation, 2-annealing and 3-elongation/extension. These steps are repeated 15-40 times in order to exponentially amplify the linear DNA fragment. It is well known that longer extension times can be used as a strategy to increase the yield of longer PCR products. This is because the extension time depends on the synthesis rate of the DNA polymerase used in PCR technique and the length of the DNA fragment to be amplified.
