An internal 23 amino acid region of the sequence above is the 5th transmembrane domain of GLUT1. The beginning of the sequence is an intracellular loop. The end of the sequence is an extracellular loop. Indicate where these regions might be in the sequence. Explain how you derived at your hypothesis. What secondary structure might this transmembrane region be? The mammalian membrane is 30 angstroms thick.

1. environmental factors, such as ph and temperature, can affect the function of an enzyme. a. true b. false 2. which of the following is an organic molecules (ex. vitamins) that an enzyme? a. coenzyme b. product c. active site d. substrate 3. how do enzymes effect the speed of a chemical reaction? a. they speed it up b. they slow it down c. they have no effect on the speed of a reaction 4. during a chemical reaction, an enzyme is used up so that it can only be used one time. a. true b. false 5. which of the following results from a chemical reaction that is catalyzed by an enzymes? a. active site b. product c. substrate d. coenzyme

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

What maintain homeostasis when a persons internal body temperature is 97.5°f