4.3- Enzyme Efficiency and Regulation Biothermodynamics

0.0(0)
studied byStudied by 0 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/7

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

8 Terms

1
New cards

Denature protein has lost…

all structure except its primary structure and is non-functional.

2
New cards

Higher temperatures increase enzyme activity up to a…

threshold, past which enzyme activity decreases.

3
New cards

4 Levels of enzyme regulation:

  1. Genetic Level

  2. Physical Level

  3. Enzyme Level

  4. Negative Feedback/ Feedback Inhibition Level

4
New cards

Genetic Level:

genes producing enzymes can be activated or disabled (e.g.: lac operon).

5
New cards

Physical Level

enzymes can be stored in vesicles and only released as needed.

6
New cards

Enzyme Level

  • enzymes can be activated/disabled via chemical modification (like phosphorylation)

  • Ex: enzymes can be cleaved (inactive form → active form) via chemical modification

  • Can also be modified by having another molecule bind them, altering their level of activity

7
New cards
<p>Negative Feedback/Feedback Inhibition</p>

Negative Feedback/Feedback Inhibition

  • When the product of a reaction binds to and inhibits that reaction, preventing excess product production.

  • Primary way the body maintains homeostasis.

8
New cards

Positive Feedback

  • A product of an enzyme triggers even more of its own production

  • This creates a loop that increases in magnitude

  • Ex: Labor contractions in birth (head of fetus pushes against the cervix, stimulating the brain to release oxytocin, pushing the fetus more towards cervix)