Answer:
The correct assertive is letter B, Leucine.
Explanation:
Amino acids are important compounds for body maintenance and energy building. The set of several amino acids is called protein. In the case of a transmembrane protein, it is the set of several amino acids that surrounds the entire biological membrane to which it is permanently attached.
In the case of transmenbranar proteins, there are two types: single-step transmembrane and multi-step transmembrane. It is in a single-step transmembrane subtype that we have the alpha helix and the amino acid leucine, which is the transmembrane domain subtype.
Darwin concluded that the sea level was high were it reached the mountain and as times passed sea level lowers down and clams were still on the mountain so when they died they were fossilized in the mountains. Hope this helps
From what I know, Its simply an outside force that kills an unsuspecting population, so do with that as you will, im only a highschool fetus
Answer:
d.organisms from the past
Explanation:
Fossils document the existence of now-extinct species, showing that different organisms have lived on Earth during different periods of the planet's history. They can also help scientists reconstruct the evolutionary histories of present-day species.
Answer:
a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport.
