Answer:
B.The radioactive label would be associated with the protease.
Explanation:
The protease is an enzyme that digest proteins. When added to the mixture of proteins and the organelle the protease would destroy not only the protein that is labeled with a radioactive marker but also the unmarked one. The radioactive label can be found with the protease when this has already destroyed the protein.
<u>Answer</u>:
All of these are the most important source of of nitrogen that can lead to eutrophication of aquatic ecosystems
<u>Explanation</u>:
Eutrphication is process where the amount of nutrients in the aquatic system increases. The two major source of nutrients or minerals that causes eutrophication is Nitrogen and Phosphorus. The nitrogen or Phosphorus promotes the growth of phytoplanktons. These phytoplanktons covers the surface of the aquatic system thereby leading to decrease in the amount of oxygen in the system. The runoff from the agricultural lands contains the particles of fertilisers used for the crops.Usually those fertilizers like Urea are made up of Nitrogen and phosphorus. Also the sewage water too contains nitrogen in it.
The only permanent solution is to completely stop deforestation and amp up reforestation and put all remaining forests etc. into parks that are protected by the governments.
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Answer:
DNA produces messenger RNA, also called mRNA.
Answer:
A, B and C may be true
Explanation:
The three-dimensional structure (3D) of a protein, also known as tertiary structure, is critical to its function. In general, the 3D protein structure consists of alpha-helix and beta-sheets (secondary structures) associated through disordered coiled-coil regions. Genetic mutations may cause modifications in the 3D protein structure by modifying amino acids that are added to the growing polypeptide chain during the process of translation. In consequence, the relationships among amino acids (i.e., the intermolecular attractive forces that hold them together) may also be altered by these mutations. In general, mutations that generate amino acid changes at the active site of the enzyme will have a deleterious effect, thereby decreasing or inactivating protein function. However, there are situations where a mutation may be beneficial and can eventually increase the rate of reaction of a protein.