Buzz Light year
True or False?
Red light has a longer wavelength compared to blue light
True
Red= longer wavelength, Blue/purples= shorter wavelength
True or False?
Calvin cycle occurs in the thylakoid membranes of
chloroplast.
False
Stroma
True or False?
An enzyme lowers the activation energy of the reaction, which increases the reaction rate.
True
A reaction produces a negative ΔG (ΔG <0). Will it be spontaneous or non-spontaneous?
Spontaneous
What 2 properties of water allow for capillary action?
cohesion & adhesion
On a photosystem, where are the special pair of chlorophyll a molecules found?
reaction center complex
In the photosynthesis reaction:
CO2 + H2O + light energy --> C6H12O6 + O2
H2O is the reactant that is reduced or oxidized?
Oxidized
loss of H from H2O -- to -- O2
A holoenzyme is activated when a non-protein component called a ________ binds to an apoenzyme.
co-factor
Is the following reaction anabolic or catabolic?
A + B + Energy --> AB
Anabolic
Identify if the following would form a hydrogen
bond (yes or no?):
With "----" equals the potential bond formation
O-H(δ-) ---- (δ+) C-N
[O=3.5][H=2.1] [C=3.0][N=2.5]
Yes
In Photosystem II, oxidized P680+ is reduced to
P680 following donation of electrons from what process?
Enzymatic splitting of water
H20 --> O2
What are two products of the light reactions that are
Subsequently used by the Calvin cycle?
ATP and NADPH
Daily Double!
The following is a sample enzymatic reaction, which can be monitored by adding a color indicator:
Substrate (red) ---enzyme---> Product (blue)
A test chemical (X) is added to the reaction. Based on the results below, determine if chemical X is a non-inhibitor, competitive inhibitor or non-competitive inhibitor.
Test Tube 1 = enzyme + substrate + Chemical X
(result = RED color)
Test Tube 2= enzyme + substrate (double amount)+ chemical X
(result = BLUE colour)
Competitive inhibitor
-Adding more substrate in test tube 2 led to more product being formed (which alleviated the effects of the competitive inhibitor)
In a reaction, the free energy of the reactants is higher than the free energy of the products. Is the reaction an anabolic or catabolic pathway?
Catabolic
What type of co-transport that happens when two molecules are transported by one transport protein in opposite directions?
antiport