The answer is B) mutation
A mutation is the alteration of a nucleotide
sequence in DNA. <span>Changed DNA sequence is transcribed into
RNA. This changed RNA sequence is
translated into misformed protein.
</span>
Replication is a process in which DNA molecule is copied, and thereby two identical DNA molecules are produced. Transformation is a process of incorporation of the foreign genetic material into cell's genetic material.
Both answers b and d are macromolecules so either one would be correct. personally i would put b
Explanation:
botox decreases the release of acetylcholine from motor neurons.
The answer is shallow, warm, continental seas.
The Ordovician-Silurian extinction happened about 450-430 million years ago. Before the extinction, most multicellular organisms lived in the seas. It was a rich life in shallow, warm, and continental seas. The climate was favorable. Reef-forming corals, as well as the first true vertebrates, some fish, appeared. Trilobites and mollusks were diverse and rich. Green algae were common in the seas.
Answer:
secretion
Explanation:
Epithelial cells are usually cells located or found outside the body, skin, urinary tract, vessels, cavities, and organs of the body, and have special modifications of their surfaces which depends upon the specific roles they perform and where they are found. However, many types of epithelial cells perform a common function of secretion. Epithelial cells are closely packed together.
