<span>The correct answer is the nucleus and the cell wall. Cell walls and Nucleus are only found in specific cells. Prokaryotic cells are cells that do not have definite nucleus in their cells, while Animal Cells do not have cell walls, yet the Plant Cells have cell walls.</span>
Answer:
Okay you didnt give me choices
Explanation:
Answer:
Heterotrimeric G protein that separates into α and βγ subunits.
Explanation:
G proteins that activate adenylyl cyclase are trimers of three different subunits. These are named alpha, beta and gamma subunits. The alpha subunit has a nucleotide-binding site called Gs. Binding of GTP to Gs activates it which in turn activates adenylyl cyclase. When the nucleotide-binding site of G-protein is occupied by GDP, it is inactive.
Binding of a signaling molecule such as epinephrine facilitates the displacement of bound GDP by GTP and converting the Gs into its active form. As Gs is activated, the beta and gamma subunits of Gs dissociate from the alpha subunit. The Gs with its alpha subunit and bound GTP then activates adenylyl cyclase.
Answer:
15%
Together, adenine and thymine compose 70% of the segment. This means that 30% of the section is composed of guanine-cytosine pairs. Since these two bases will be equal in quantity, 15% of the DNA section will be cytosine bases.