Deck 3

Question 1

Enzyme active center

Answer 1

• Or active site, where a substrate bind.
• Inhibitors can also bind

Question 2

Endocytosis (receptor-mediated)

Answer 2

Receptors on the surface becomes part of the endosome inside the cell. The receptors are recycled back to the surface. E.g. uptake of cholesterol is by this type of endocytosis

Question 3

Effector

Answer 3

Influence enzyme activity, by either causing increased (activator) or decreased enzyme activity (inhibitor).

Question 4

Electrochemical gradient

Answer 4

• a gradient of electrochemical potential
• usually for an ion that can move across a membrane

-> the driving force for oxidative phosphorylation and photophosphorylation

Question 5

Endergonic reaction

Answer 5

energy is needed to start the reaction

Question 6

Epimer

Answer 6

One of a pair of stereoisomers that differ in the absolute configuration of a single stereocenter

Question 7

Eicosanoids

Answer 7

• Take part in inflammation.
• Derivative of arachidonic acid

Question 8

Estradiol

Answer 8

• Steroid hormone.
• It’s an estrogen (a sex hormone).

Question 9

Fibrinogen

Answer 9

blood protein, converted to fibrin. (Inactive form of fibrin)

Question 10

Fibrin

Answer 10

• Derived from proteolysis of fibrinogen.
• Hold blood clots together