When you swallow food, it doesn't just drop down into your stomach. Muscles contract in a wave-like motion to move the food along through the esophagus. This muscle movement is called, peristalsis, or peristaltic waves. These peristaltic waves contract behind the food bolus pushing it along the digestive tract.
Answer:
Controlled group does not receive the treatment. It used as a benchmark to measure how different tested subjects affected the result of the experiment.
For example, the famous experiment of whether plants grow faster with music in one room and without music in the other room. The plant in the no music room is the controlled group.
Hello <span>johnsoncourtney3,</span><span> Tylenol and other medications containing acetaminophen can
be potentially damaging to the liver, especially when taken in
combination with alcohol, few know that a “relatively small overdose can kill you."</span>
RNA polymerase binds to the lac promoter and begins transcribing
the stretch of DNA to messenger RNA.
Therefore, in other words, the stretch of DNA is expressed. The DNA sequence of
the lac promoter 'signals' where the RNA
polymerase will bind and where transcription
will begin. Promoters are found upstream of a gene to be transcribed.
The chromatids are made of a substance called chromatin. This is a single, very long strand of DNA. ... The chromatin is copied, so you now have 92 strands, that are each spiraled up to form the chromatids. The 2 copies of each chromatid are joined together by a centromere to form a chromosome.
