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Biology Midterm Photosynthesis
Terms in this set (49)
In a chloroplast, there is an outer and an inner membrane. The inner membrane encloses a fluid filled region called the:
The most important photosynthetic pigment is:
Ribulose phosphate is synthesized from:
You have just discovered a new flower species that has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wave lengths of visible light are not being absorbed by this pigment?
red and yellow
absorbs red and blue light, and reflects green light
The thylakoid membrane encloses a space called the
Which of the following is not one of the intermediates or products of the carbon fixation reactions>
Light behaves not only in waves, but also particles, which are referred to as:
The following (P-U) are the main steps of ATP synthesis in the light dependent reactions of photosynthesis. Which answer places them in the correct order?
The process by which light energy is converted into the stored chemical energy of organic molecules is:
Chlorophyll and accessory photosynthetic pigments are associate with the:
Thylakoid membranes are involved in ________ synthesis
Assume a thylakoid is somehow punctured so that the interior of the thylakoid membrane is no longer separated from the stroma. This damage will have the most direct effect on which of the following processes?
synthesis of ATP
The energy of a photon of light is least for_____ light
By definition, substances that absorb visible light are called:
An electron absorbs a photon of light energy and becomes energized; the electron shifts from a ________ atomic orbital to a ________ atomic orbital
low energy; high energy
The reactions of photosynthesis are divided into two categories:
light dependent reactions and carbon fixation reactions
Chlorophyll consists of a porphyrin ring that contains a single atom of:
***The primary function of the leaf structure labeled 5 in Figure 9-1 is:
***Chloroplast will be found in the greatest density in the area of Figure 9-1 labeled:
3 and 4
***Where in Figure 9-3 is NADPH formed?
Carbon is fixed in which part of the diagram in Figure 9-3?
In the overall reactions of photosynthesis, it appears that hydrogen atoms are transferred from water to carbon dioxide to form a carbohydrate. This type of reaction is classified as:
a redox reaction
Which term is not correctly matched with the appropriate energy source or carbon source?
All of the choices are correct
Which of the following is not associated with the thylakoid membrane?
the Calvin cycle
All of the following statements are correct regarding the Calvin Cycle of photosynthesis except
the 5 carbon sugar RUBP is constantly being regenerated
Oxygen produced by the light reactions of photosynthesis comes directly from:
How many electrons are needed to reduce one molecule of NADP+ to NADPH?
At night, CAM plants incorporate CO2 into _________, which is stored in the ___________ of their cells.
glucose; starch granules
The reactants of the Calvin cycle are
CO2, ATP, and NADPH
***According to the graph in Figure 9-2 chlorophyll absorbs light most strongly in the:
red and blue wavelengths
***The graph in Figure 9-2 represents the
absorption spectra for chlorophylls a and b
Plants, algae, and certain bacteria are:
A group of thylakoid disk make up:
Electrons that are excited to a higher energy level may be transferred to an electron acceptor or may return to a ground state. If the latter occurs, energy will be released in a process known as:
The first step in the Calvin Cycle is the attachment of carbon dioxide to:
Animals, fungi, and many bacteria that use organic molecules as a source of both energy and carbon are:
Which of these colors contributes the least energy to photosynthesis?
ATP is formed when ___________ the thylakoid lumen.
hydrogen ion leave
The first event in photosynthesis is the
donation of an electron from the photosystem to an acceptor
What is the correct sequence of wavelengths (beginning with the shortest)?
gamma rays, x-rays, UV, visible light, infrared, microwaves, and TV and radio waves
The electron transport chain of photosynthesis is located in the:
Noncyclic electron transport needs a constant supply of electrons. These are obtained from:
Which chemical has the most energy?
In C3 plants, the ________ are typically closed at night and open during the daytime to allow for gas exchange
All organisms are classified into two general trophic groups. These two groups are:
autotrophs and heterotrophs
The reactions that occur in the thylakoid membrane are:
the light-dependent reactions
The synthesis of ATP as a result of the light-dependent reactions of photosynthesis is a __________ reaction that is coupled to the diffusion of _________ down their concentration gradient.
The light spectrum of photosynthesis best matches the absorption spectrum of: