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Chemistry LibreTexts

6.05 Photosynthesis

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  • cc_profilecc.exam.v0p1qmd_assessmenttypeExaminationqmd_scoretypePercentagecc_maxattempts1
    cc_profilecc.true_false.v0p1All organisms need <u>energy</u> to carry out life processes. TrueFalse1100cc_profilecc.true_false.v0p1<u>Photosynthesis</u> involves using energy to build organic molecules and breaking down organic molecules in which energy is stored. TrueFalse4100cc_profilecc.true_false.v0p1<u>ATP</u> is a portable form of energy “currency” inside cells. TrueFalse5100cc_profilecc.true_false.v0p1The final stage of photosynthesis during which sugar molecules are produced is light <u>dependent</u>. TrueFalse8100cc_profilecc.true_false.v0p1The reactions that “fix” carbon dioxide are sometimes called dark reactions. TrueFalse9100cc_profilecc.true_false.v0p1Most of the three-carbon sugars formed during the <u>Calvin</u> cycle are used to regenerate the five-carbon compound that began the cycle. TrueFalse11100cc_profilecc.true_false.v0p1<u>Carbon dioxide</u> concentration is one of the environmental factors that affect photosynthesis. TrueFalse13100cc_profilecc.true_false.v0p1During aerobic respiration, the breakdown of a molecule of glucose yields a net of up to <u>two</u> molecules of ATP. TrueFalse16100cc_profilecc.true_false.v0p1Fermentation takes place in absence of <u>carbon dioxide</u>. TrueFalse18100cc_profilecc.true_false.v0p1Lactic acid fermentation is an <u>anaerobic</u> process. TrueFalse19100cc_profilecc.multiple_choice.v0p1Light energy is converted to chemical energy through the process ofcellular respiration.fermentation.photosynthesis.glycolysis.23100cc_profilecc.multiple_choice.v0p1Which of the following organisms do <i>not</i> carry out photosynthesis?plantsalgaecertain prokaryotesanimals28100cc_profilecc.multiple_choice.v0p1ATP is composed of a nitrogenous base, a sugar, and one phosphate group.two phosphate groups.three phosphate groups.four phosphate groups.31100cc_profilecc.multiple_choice.v0p1<p>chloroplasts : photosynthesis ::</p>mitochondria : cellular respirationsolar energy : cellular respirationmetabolism : carbonoxygen : carbon dioxide33100cc_profilecc.multiple_choice.v0p1photosynthesis : oxygen ::oxygen : carbon dioxidecellular respiration : carbon dioxidecellular respiration : oxygencellular respiration : enzymes38100cc_profilecc.multiple_choice.v0p1When cells break down food molecules, energy isreleased quickly.released entirely as body heat into the environment.stored temporarily in ATP molecules.stored permanently in ATP molecules.43100cc_profilecc.multiple_choice.v0p1ATP is called a cell’s energy “currency” becauseATP catalyzes all metabolic reactions.ATP allows one organelle to be exchanged for another between cells.glucose is made of ATP.ATP can be “made” in one place and “spent” or used in another.48100cc_profilecc.multiple_choice.v0p1When a phosphate group is removed from an ATP molecule,a substantial amount of energy is enzyme is is stored.a substantial amount of energy is used.49100cc_profilecc.multiple_choice.v0p1Chlorophyll is green becauseit absorbs green wavelengths of absorbs blue and yellow wavelengths, which make reflects green wavelengths of light.of an optical illusion caused by transmitted light.55100cc_profilecc.multiple_choice.v0p1The major atmospheric by-product of photosynthesis isnitrogen.carbon dioxide.water.oxygen.60100cc_profilecc.multiple_choice.v0p1Products of the light reactions of photosynthesis that are required by the dark reactions areoxygen and ATP.water and oxygen.ATP and NADPH.oxygen and NADPH.63100cc_profilecc.multiple_choice.v0p1The energy used in the Calvin cycle for the production of sugar molecules comes fromATP only.the Krebs cycle.ATP and NADPH.carbon dioxide.67100cc_profilecc.multiple_choice.v0p1Which of the following environmental factors does <i>not</i> affect the rate of photosynthesis?oxygen concentrationcarbon dioxide concentrationlight intensitytemperature69100cc_profilecc.multiple_choice.v0p1When glycolysis occurs,a molecule of glucose is split.a molecule of glucose is formed.photosynthesis begins.pyruvates are combined.73100cc_profilecc.multiple_choice.v0p1The process of cellular respirationis performed only by organisms that are incapable of photosynthesis.breaks down food molecules to release stored energy.occurs before plants are able to continue photosynthesis.occurs only in animals.78100cc_profilecc.multiple_choice.v0p1Which of the following is <i>not</i> part of cellular respiration?electron transportglycolysisKrebs cycleCalvin cycle84100cc_profilecc.multiple_choice.v0p1Water is an end product inlactic acid fermentation.alcoholic fermentation.the Krebs cycle.the electron transport chain in aerobic respiration.88100cc_profilecc.multiple_choice.v0p1Which of the following is <i>not</i> formed during the Krebs cycle?CO<sub>2</sub>FADH<sub>2</sub>NADHNADPH92100cc_profilecc.multiple_choice.v0p1The name of the process that takes place when organic compounds are broken down in the absence of oxygen isrespiration.oxidation.fermentation.photosynthesis.95100cc_profilecc.multiple_choice.v0p1Which of the following processes produces the most ATP?aerobic respirationglycolysislactic acid fermentationalcoholic fermentation97100