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| 1 | |
Autotrophs that get their energy from light are known as |
| | A) | chemosynthetic. |
| | B) | photoautotroph. |
| | C) | heterotroph. |
| | D) | secondary autotroph. |
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| 2 | |
Which of the following does NOT undergo photosynthesis? |
| | A) | green tree frog |
| | B) | algae |
| | C) | pine tree |
| | D) | corn |
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| 3 | |
The primary photosynthetic pigment is |
| | A) | xanthophyll. |
| | B) | riboflavin. |
| | C) | chlorophyll. |
| | D) | carotene. |
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| 4 | |
The ________ consists of stacks of membranous sacks containing chlorophyll, and the ________ are the spaces between membranes. |
| | A) | cristae, grana |
| | B) | grana, stroma |
| | C) | stroma, grana |
| | D) | grana, cristae |
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| 5 | |
One of the products of photosynthesis, glucose, is produced as a result of the |
| | A) | reduction of carbon dioxide. |
| | B) | oxidation of carbon dioxide. |
| | C) | carbon dioxide is both oxidized and reduced. |
| | D) | neither oxidized nor reduced. |
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| 6 | |
When the ATP and NADPH give up their energy and hydrogens, they turn back into |
| | A) | CO2 and H20. |
| | B) | coenzymes and vitamins |
| | C) | phosphorylation molecules |
| | D) | ADP and NADP+ |
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| 7 | |
Electrons that have taken on extra energy from light are referred to as |
| | A) | excited. |
| | B) | energized. |
| | C) | ATP. |
| | D) | light activated. |
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| 8 | |
Chlorophyll a and chlorophyll b: Both absorb strongly in the (ignore)red(ignore) and (ignore)blue(ignore) portions of the electromagnetic spectrum. |
| | A) | red, blue |
| | B) | yellow, red |
| | C) | white, blue |
| | D) | yellow, blue |
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| 9 | |
During these reactions, the "excited" electrons from the light-capturing events are passed to protein molecules in the thylakoid: |
| | A) | Photo-excitation phase. |
| | B) | The Krebs Cycle. |
| | C) | The light-independent reactions. |
| | D) | The light-dependent reactions. |
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| 10 | |
This enzyme speeds the combining of the CO2 with an already-present, 5-carbon sugar: |
| | A) | Glucose-oxidase. |
| | B) | Ribulose bisphosphate carboxylase (RuBisCo). |
| | C) | Glyceraldehyde-3-phosphatatase. |
| | D) | DNAase. |
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| 11 | |
When light shines on the ___________ and strikes a chlorophyll molecule, an electron becomes excited. |
| | A) | thylakoids |
| | B) | cristae |
| | C) | antenna complex |
| | D) | grana |
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| 12 | |
The electrons released from photosystem II end up in the chlorophyll molecules of |
| | A) | photosystem I. |
| | B) | thylakoids. |
| | C) | antenna complexes. |
| | D) | water. |
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| 13 | |
Electrons from the hydrogen of water replace the electrons lost by chlorophyll in |
| | A) | photosystem I. |
| | B) | photosystem II. |
| | C) | photosystem III. |
| | D) | stroma. |
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| 14 | |
Which of the following statements is/are true? |
| | A) | Because photosynthesis gives off oxygen as a waste product, plants do not require oxygen. |
| | B) | Plants do not undergo cellular respiration because their energy requirements are met during the first stage of photosynthesis. |
| | C) | The various photosynthetic pigments allow for the harvesting of light coming into the plant at different wavelengths. |
| | D) | All of the above. |
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| 15 | |
Which of the following statements is/are true? |
| | A) | Plants use the end products of both plant and animal respiration to produce foods. |
| | B) | Plants and animals use the end products of plant photosynthesis as sources of energy. |
| | C) | NAD+ is the electron receptor in respiration; NADP+ is the electron receptor in photosynthesis. |
| | D) | All of the above. |
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| 16 | |
An autotroph is an organism that |
| | A) | does not require food. |
| | B) | does not respire. |
| | C) | is able to "fix" carbon into an organic compound such as sugar. |
| | D) | is a self starter. |
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| 17 | |
In this cycle, ATP and NADPH from the light-dependent reactions are used along with carbon dioxide to synthesize larger, organic molecules: |
| | A) | The Calvin Cycle. |
| | B) | The Krebs Cycle. |
| | C) | The Electron Transport Cycle. |
| | D) | The Energy Cycle. |
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| 18 | |
The hydrogen which eventually becomes a part of sugar manufactured in photosynthesis is acquired from |
| | A) | water. |
| | B) | active transport. |
| | C) | sunlight. |
| | D) | rearrangement of carbon dioxide molecules. |
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| 19 | |
Light energy conversion provides the energy for the second phase of photosynthesis when |
| | A) | light is released as sound. |
| | B) | water is cleaved into hydrogen and oxygen. |
| | C) | sugar is used as the substrate. |
| | D) | chemical bonds in ATP are formed. |
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| 20 | |
The oxygen used for aerobic cellular respiration in plants comes from the process of |
| | A) | photosynthesis. |
| | B) | respiration. |
| | C) | protein synthesis. |
| | D) | chemical activity in mitochondria. |
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| 21 | |
The cell can convert this compound into lipids, such as oils for storage, phospholipids for cell membranes, or steroids for cell membranes: |
| | A) | RuBisCo. |
| | B) | Ribulose bisphosphate. |
| | C) | Glucose. |
| | D) | Glyceraldehyde-3-phosphate. |
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| 22 | |
Light energy is used to generate |
| | A) | ATP. |
| | B) | NADPH. |
| | C) | glucose. |
| | D) | All the above are generated. |
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| 23 | |
Which of the following is the correct generalized chemical equation for photosynthesis? |
| | A) | Energy + C6H12O6 + 6O2 --> 6CO2 + 6H2O |
| | B) | Energy + 6CO2 + 6H2O --> C6H12O6 + 6O2. |
| | C) | C6H12O6 + 6O2 --> 6CO2 + 6H2O + Energy |
| | D) | 6CO2 + 6H2O --> C6H12O6 + 6O2 + Energy |
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| 24 | |
Plants can use PGAL to |
| | A) | make sugar molecules and lipids. |
| | B) | make the carbon skeleton for amino acids. |
| | C) | obtain energy. |
| | D) | All of the above. |
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| 25 | |
Plants do give off oxygen in the ______________ of photosynthesis. |
| | A) | light-dependent reactions. |
| | B) | light-independent reactions. |
| | C) | light capturing stage. |
| | D) | ETS. |
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| 26 | |
Which of these molecules is least like the others in terms of function? |
| | A) | FAD |
| | B) | PGAL |
| | C) | NADP |
| | D) | NAD+ |
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| 27 | |
Cellular respiration occurs in |
| | A) | autotrophs only. |
| | B) | heterotrophs only. |
| | C) | autotrophs and heterotrophs. |
| | D) | animals but not plants. |
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| 28 | |
The atmospheric oxygen released by plants comes from |
| | A) | H2O. |
| | B) | CO2. |
| | C) | PGAL. |
| | D) | C6H12O6. |
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| 29 | |
Cellular respiration supplies two of the most important basic ingredients of photosynthesis, |
| | A) | glucose and O2. |
| | B) | CO2 and H2O. |
| | C) | PGAL and chlorophyll. |
| | D) | ribosomes and chloroplasts. |
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| 30 | |
Photoautotrophs |
| | A) | use light energy, inorganic molecules to manufacture organic compounds. |
| | B) | produce CO2 and H2O. |
| | C) | do not utilize proton pumping methods to generate organic compounds. |
| | D) | are no different than heterotrophs. |
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