5 Written Questions
5 Matching Questions
- What is a cellular metabolism?
- What stops molecules from spontaneously breaking down into less energetic molecules?
- What is this message-transfer process called?
- How does a receptor protein relay it's information?
- What is the problem with the concept of energy of activation?
- a It takes a very long time for all the products to gain enough energy to make it over the energy barrier
- b Every working cell in every organism caries out thousands of exer/endergonic reactions
- c The binding of the protein to the message sets off a chain reaction involving other proteins which relay the message to a meolecule that performs a specific activity inside the cell
- d The energy barrier
- e signl transduction
5 Multiple Choice Questions
- Doesn't bind to active sight, binds to corner of enzyme, changes shape of active sight so substrate cannot bind
- The way of an plant/animal to prevent excessive uptake or excessive loss of water
- With one phosphate group and two fatty acids, has hydrophilic head and hydrophobic tails
- Most chemical reactions are organized into a series of steps, each catalyzed by an enzyme, to form certain product. If product is being over-made, then the product will act as an inhibitor to one of the enzymes in its pathway, called feedback inhibition (?)
5 True/False Questions
Are inhibitors always harmful? → No, enzyme inhibition often used for regulation cell metabolism
What is a hypertonic solution? → A solution whose pH is lower than that of the cells, cell gains water, pops
Why is the structure of a phospholipid helpful and clever? → Enzymes, and Because enzymes act as biological catalysts that increases the rate of a reaction without itself being changed into a different molecule, smushes down energy barrier
What is energy coupling? → The use of energy released from exergonic reactions to fuel necessary endergonic reactions
What is an isotonic solution? → A solution whose pH is equal to that of the cell, the cell gains water as quickly as it loses it, stays the same