The fluid mosaic model describes membranes as fluid because
A: the phospholipids and proteins move from place
to place within the bilayer
B: the phospholipid molecules are bonded to one another, making them more moveable
C: the phospholipids move from place to place around the motionless membrane proteins
D: the membrane is composed mainly of water
the phospholipids and proteins move from place
to place within the bilayer
What Protein does the following picture show?
Gap Junctions are in ______, while plasmadesmata are found in _______
A: Both plants and animals, animals only
B: plants, animals
C: animals, plants
D: animals only, both plants and animals
Which of the following is an example of potential energy?
A. Cart moving on a roller coaster
B. Wood burning
C. An electron in its outer most shell
D. Pressure in an unopened coke bottle
E. Answers C and D
Answers C and D
True/False: The first law of thermodynamics states that systems tend to increase in entropy
True/False: An enzyme can act as a catalyst, is a protein, increases the activation energy, and any type of substrate can bind to one enzyme.
The following picture is an example of a(n)
What causes the active site to
change shape, so the substrate
no longer fits?
Which of the following does NOT illustrate kinetic energy?
A car moving at 55 mph
B: A 100 watt light bulb, turned on
C: A drop a water falling down a waterfall
D: A 9 volt battery
A 9 volt battery
The purpose of an enzyme is to
A: Lower the activation energy of a reaction
B: Give the reaction an active site for it to occur
C: Regulate how many times a reaction occurs
D: Lower the energy of the product.
Lower the activation energy of a reaction
What is the correct order of an enzymatic reaction?
1: The Enzyme binds the substrates
2: Enzyme and products are floating in solution
3: The enzyme binds the products
4: The enzymes and substrates are floating in solution
Air pores in the backs of leaves where CO2 is obtained is called. . .
True/False: Photosystem II occurs before Photosystem I
True/False: The Calvin cycle is part of the light reactions
Which of the following is NOT a step of chemiosmosis
A: H+ flow down concentration gradient through a thylakoid channel protein called ATP synthase, generating ATP from ADP
B: Glucose may then be converted to the disaccharide sucrose or linked to form starch (a storage molecule) or cellulose (a major component of plant cell walls)
C: As the energized electron travels along electron chains, some of the energy it liberates is used to pump hydrogen ions into the thylakoid space
D: This pumping creates a high concentration of H+ inside the space relative to the surrounding stroma
Glucose may then be converted to the disaccharide sucrose or linked to form starch (a storage molecule) or cellulose (a major component of plant cell walls)
Which of the following is used for carbon fixation?
A: The CAM cycle
B: The C4 Cycle
C: The Calvin Cycle
D: All of the above
All of the above
During photosynthesis, when is CO2 utilized?
A: during the light reactions only
B: during the Calvin cycle only
C: during both the light reactions and the Calvin cycle
D: NONE of the above answers
during the Calvin cycle only
Photolysis happens where?
A: In photosystem I
B: In photosystem II
C: In it Stroma
D: In the Stoma