B. Yolk sac that should be it. Hope this helps!
-Belle
<span>Interactions between polar, nonpolar, acidic, and basic R group within the polypeptide chain create the complex three-dimensional tertiary structure of a protein. ... Cysteine side chains form disulfide linkages in the presence of oxygen, the only covalent bond forming during protein folding.</span>
One way is experimentation. And because people change, environment change and they are more convenient
Answer:
A. III only
Explanation:
Cytochromes are found only in the mitochondrial membrane as part of the electron transport chain. They are vital to the downward cascade of energy as electrons are passed from the NAD+ and FAD produced during glycolysis and the Krebs cycle into the electron transport chain to eventually produce ATP.
Answer:
Regulates Checkpoints - growth factor and damage to DNA
Speeds up or slows down - External regulators
Stops cell cycle - When cells are growing and dividing
Make sure chromosomes have replicated - Internal regulators
Explanation:
Cell cycle is the process by which cell development happens. The body functions has the ability to control the growth of cells. When the body looses the ability to control and regulate the cell growth cycle the body is in a state of disease called cancer.