Answer:
When liquid water is cooled it contracts like all liquids do. The cohesion and adhesion interaction allow for water to exist underneath the ice.
Explanation:
This is true for all bodies of water, lakes, rivers, ponds, etc., all freeze from the top down. It allows for aqautic life to survive during the winter months at the floor of the body of water.
Answer
True
Explanation
True
The correct answer is "delirium tremens"
<span>
In the event of abrupt cessation of alcohol use,
there will be an adaptive response of the central nervous system leading to
overactivity which explains the withdrawal symptoms. In the event of central
nervous system hyperactivity, mild symptoms include but not limited to
insomnia, tremors, mild anxiety, headache, and diaphoresis; these symptoms
appear usually within six hours of cessation. Withdrawal-related seizures
characterized as generalized tonic-clonic convulsions as well as alcoholic
hallucinosis or hallucinations related to abrupt alcohol cessation may occur in
moderately severe cases. In most severe cases, delirium tremens may occur and
this is characterized by hallucinations, disorientation, tachycardia, and
agitation. </span>
Answer:
Agarose gel electrophoresis is the most suitable method for this analysis.
Explanation:
SDS-PAGE, sodium dodecyl sulfate polyacrylamide gel electrophoresis, is a procedure used for visualizing and separating proteins according to their molecular weight. The use of sodium dodecyl sulfate and polyacrylamide gel eliminates most of the influence of the tertiary structure and charge, and proteins are separated solely based on polypeptide chain length. So, if the student suspects that the protein sample is conformed of 4 subunits similar in molecular weight, SDS PAGE will likely not separate them.
On the other hand, an agarose gel electrophoresis can separate proteins based on their size AND charge, so, if you suspect that the proteins are not identical but similar in size, the charge factor can be important to separate them in an experiment.
