1. The carrier proteins through which sugar enters pancreatic beta cells have__.A. A Lower Km.B. A Higher Km.C. The Same Km.2. Than the carriers through which sugar enters muscle cells . In order for muscle cells to increase sugar import_.A. Blood sugar levels must be high.B. Insulin must be present.C. Glycogen must be present.D. Glucagon must be present.3. Oh, and glucokinase has awhen compared to hexokinase.A. High Km.B. Low Km. 4. are responsible for the release of transferrin from the transferrin receptor and iron form transferrin. A. Proton Pumps.B. Iron Reductases.C. Ferriportins.D. Iron Oxidases.5. Convert the iron to the active form in which it may be exported.A. Proton Pumps.B. Iron Reductases.C. Ferriportins.D. Iron Oxidases. 6. This happens in the___.A. Lysosome.B. Cytoplasm.C. Intermembrane Space.D. Interstitial Fluid.

Question

03-03-2020
Biology

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1. The carrier proteins through which sugar enters pancreatic beta cells have__.A. A Lower Km.B. A Higher Km.C. The Same Km.2. Than the carriers through which sugar enters muscle cells . In order for muscle cells to increase sugar import_.A. Blood sugar levels must be high.B. Insulin must be present.C. Glycogen must be present.D. Glucagon must be present.3. Oh, and glucokinase has awhen compared to hexokinase.A. High Km.B. Low Km. 4. are responsible for the release of transferrin from the transferrin receptor and iron form transferrin. A. Proton Pumps.B. Iron Reductases.C. Ferriportins.D. Iron Oxidases.5. Convert the iron to the active form in which it may be exported.A. Proton Pumps.B. Iron Reductases.C. Ferriportins.D. Iron Oxidases. 6. This happens in the___.A. Lysosome.B. Cytoplasm.C. Intermembrane Space.D. Interstitial Fluid.

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luisvaschetto luisvaschetto · Answer 1 · 2020-03-05T02:55:02+01:00

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)