Hydrogen bonds can FORM between guanine and cytosine, and between adenine and thymine
The carrier proteins through which sugar enters pancreatic beta cells have "Higher Km" (a high Km indicates low affinity for the substrate) than the carriers through which sugar enters muscle cells at fasting blood sugar levels.
In order for muscle cells to increase sugar import Insulin "must be present". Oh, and glucokinase has a High Km (a lower affinity for glucose ) when compared to hexokinase.
"Proton pumps" are responsible for the release of transferrin from the transferrin receptor and iron form transferrin (Proton pumps are transporters that move hydrogen ions from regions with low concentration to regions with higher concentration)
"Iron Reductases" convert the iron to the active form in which it may be exported (ferric iron is converted to ferrous iron by ferric reductase). This happens in the "Lysosome" (lysosome is an organelle that contains hydrolytic enzymes)
The correct answer is option D
Ali is using a specialized headphone that cancels the extra noise in the atmosphere.
Megan is using a transmitter to convert electrical signals into radio waves.
Kristoff is using a microphone to convert sound waves into the electrical signals.
Jenna is using the radio to convert radio waves into sound waves.
Dido..........................