← KCOGGS Test
5 Written Questions
5 Matching Questions
- What is the plasma membrane?
- Are inhibitors always harmful?
- Why are plants healthier in hypotonic environments?
- What is a cellular metabolism?
- How does it switch to ADP?
- a No, enzyme inhibition often used for regulation cell metabolism
- b Forms a boundary between the living cell and its surroundings and controls the traffic of molecules into and out of the cell, takes up substances the cell needs and disposes of the cells wastes
- c Every working cell in every organism caries out thousands of exer/endergonic reactions
- d The bonds that keep the three phosphates together are easily broken by hydrolysis, when the bond to the third group breaks the phosphate group leaves ATP which becomes ADP, and energy is released (?)
- e Because plants have cell walls which make it harder for the solution to take effect, need more of it
5 Multiple Choice Questions
- The way cells release energy, chemical process that uses oxygen to convert the chemical energy stored in fuel molecules to form chemical energy that the cell can use to perform work
- It takes a very long time for all the products to gain enough energy to make it over the energy barrier
- 1. Substrate enters active sight, is fitted by induced fit 2. Broken up into products by hydrolysis 3. Released from enxyme
- The way of an plant/animal to prevent excessive uptake or excessive loss of water
- Requires that a cell expends energy to move molecules across membrane against concentration gradient, low to high concentration, ATP supplies energy for most active transport
5 True/False Questions
What type of reaction is this? photosynthesis starts with co2 and h2o molecules, using energy absorbed from sunlight, produces energy-rich sugar molecules → Exergonic reaction
cf → d
What is osmosis? → The diffusion of water across a selectively permeable membrane
How does the cell use ATP this to fuel an endergonic reaction? → A reaction that requires energy, its products have more energy than its reactants, energy is absorbed through surroundings as reaction occurs, energy stored in covalent bonds of product molecules
What is the membrane? → Forms a boundary between the living cell and its surroundings and controls the traffic of molecules into and out of the cell, takes up substances the cell needs and disposes of the cells wastes