Explanation:
The DNA contains many regulatory sequences that are very important, even though they do not code for proteins.
For example, the expression of every gene is regulated by a region called the Promoter. The promoter sequence, located close by the coding region of the gene, usually binds the RNA polymerase (the enzyme that transcribes genes into mRNA) as well as other proteins necessary for transcription,
The promoter sequence, thus, does not itself code for proteins, but is essential for transcription and must be highly conserved so that the RNA polymerase can find it.
Human skin cells are eukaryotic.
Prokaryotic cells are unicellular and don't have a nucleus with a membrane. However, human skin cells have both a membrane and are not unicellular.
Answer:
what they do-coded messages
what they are made of-proteins
Answer:
(2.weathering
(4.erosion
Explanation:
Weathering is the breakdown of rocks at the Earth’s surface, by the action of rainwater, extremes of temperature, and biological activity. It does not involve the removal of rock material.
The three types of weathering, physical, chemical and biological.
Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location.
