Campbell Biology - Concepts and Connections - Chapter 7 Questions with Correct Answers Graded A+
autotroph - Answers ("self-feeders"), make own food; sustain themselves without consuming organic
molecules derived from any other organism, producers
photoautotrophs - Answers organisms that convert solar energy to chemical energy, use sunlight (such
as plants)
photosynthesis - Answers process in which plants convert CO2 and H2O to their own organic molecules
(such as glucose); release O2 as by-product
heterotrophs - Answers (hetero, "other"); organisms that consume organic material, consumers;
organisms that decompose organic material, decomposers
chlorophyll - Answers a light-absorbing pigment in the chloroplasts; plays a central role in converting
solar energy to chemical energy
mesophyll - Answers green tissue in interior in leaf, most concentrated in cells on leaf
stomata - Answers small pores in which carbon dioxide enters and oxygen leaves the leaf
stroma - Answers thick fluid in inner membrane of chloroplast
thylakoids - Answers disk-like, green, interconnected membranous sacs; enclose internal compartment
of thylakoid space
grana - Answers stacks of thylakoids
light reactions - Answers first step in photosynthesis; convert light energy to chemical energy, release
O2; occur in thylakoids
NADP+ - Answers electron acceptor in photosynthesis, reduced to NADPH
Calvin cycle - Answers second step in photosynthesis; cyclic series of reactions assembling sugar
molecules, inputs CO2 and outputs sugar (glucose)
carbon fixation - Answers incorporation of carbon from CO2 into organic compounds in Calvin cycle,
fixes CO2 into usable organic molecule
electromagnetic spectrum - Answers full range of electromagnetic wavelengths from very short gamma
rays to very long-wavelength radio waves
wavelength - Answers distance between crests of two adjacent waves
photon - Answers fixed quantity of light energy
chlorophyll a - Answers type of pigment in chloroplasts; participates directly in light reactions; absorbs
mainly blue-violet and red light
autotroph - Answers ("self-feeders"), make own food; sustain themselves without consuming organic
molecules derived from any other organism, producers
photoautotrophs - Answers organisms that convert solar energy to chemical energy, use sunlight (such
as plants)
photosynthesis - Answers process in which plants convert CO2 and H2O to their own organic molecules
(such as glucose); release O2 as by-product
heterotrophs - Answers (hetero, "other"); organisms that consume organic material, consumers;
organisms that decompose organic material, decomposers
chlorophyll - Answers a light-absorbing pigment in the chloroplasts; plays a central role in converting
solar energy to chemical energy
mesophyll - Answers green tissue in interior in leaf, most concentrated in cells on leaf
stomata - Answers small pores in which carbon dioxide enters and oxygen leaves the leaf
stroma - Answers thick fluid in inner membrane of chloroplast
thylakoids - Answers disk-like, green, interconnected membranous sacs; enclose internal compartment
of thylakoid space
grana - Answers stacks of thylakoids
light reactions - Answers first step in photosynthesis; convert light energy to chemical energy, release
O2; occur in thylakoids
NADP+ - Answers electron acceptor in photosynthesis, reduced to NADPH
Calvin cycle - Answers second step in photosynthesis; cyclic series of reactions assembling sugar
molecules, inputs CO2 and outputs sugar (glucose)
carbon fixation - Answers incorporation of carbon from CO2 into organic compounds in Calvin cycle,
fixes CO2 into usable organic molecule
electromagnetic spectrum - Answers full range of electromagnetic wavelengths from very short gamma
rays to very long-wavelength radio waves
wavelength - Answers distance between crests of two adjacent waves
photon - Answers fixed quantity of light energy
chlorophyll a - Answers type of pigment in chloroplasts; participates directly in light reactions; absorbs
mainly blue-violet and red light
