A cytochrome is a protein containing a __________; the protein “cytochrome c” shuttles electrons between __________________________.

Question 4 There are many functions of enzymes that are essential for cellular processes. A ligase is used to O split larger molecules with the use of water. split a compound by using water. removes electrons from an element. O join two molecules. Question 5 Apoenzymes are always active. inactive when they are not bound to their cofactors and/or coenzymes. built from holoenzymes. O found only in eukaryotic cells. Question 6 Allosteric inhibitors will change the shape of the substrate so that enzymatic function increases. change the shape of the substrate so that enzymatic function decreases. change the shape of the enzyme so that enzymatic function decreases. change the shape of the enzyme so that enzymatic function increases.

Question 18 In a photosynthetic cell undergoing cell expansion and growth involving active synthesis of multiple proteins, which of the following would you expect to be false? O photo-respiratory activity would increase O Nucleolar activity would be elevated O All of the possible answers are true O Mitochondrial activity will increase O Non-Cyclic electron transport would be greater than cyclic electron transport

QUESTION 49 Which step is thought to have occurred, according to endosymbiotic theory? O a. Inward folds of the plasma membrane of prokaryotes. O b. An independent prokaryotic cell was engulfed by a dependent prokaryotic cell, allowing the dependent host cell to survive with the help of the engulfed cell. O c. An independent prokaryotic cell was engulfed by another independent prokaryotic cell, after which the engulfed cell lost certain functions and became dependent on the host cell. O d. A dependent prokaryotic cell was engulfed by an independent prokaryotic cell, allowing the dependent cell to survive within the independent host cell. O e. A dependent prokaryotic cell was engulfed by another dependent prokaryotic cell, allowing each cell to survive with the help of the other.