Chapter 8: Photosynthesis Vocabulary

Question 1

-compound used by cells to store and release energy (226)

Answer 1

adenosine triphosphate (ATP) (8.1)

Question 2

-organism that obtains food by consuming other living things; also called a consumer (228)

Answer 2

heterotroph (8.1)

Question 3

-organism that is able to capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer (228)

Answer 3

autotroph (8.1)

Question 4

-process used by plants and other autotrophs to capture light energy and use it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches (228)

Answer 4

photosynthesis (8.1)

Question 5

-light-absorbing molecule used by plants to gather the sun’s energy (230)

Answer 5

pigment (8.2)

Question 6

-principal pigment of plants and other photosynthetic organisms (230)

Answer 6

chlorophyll (8.2)

Question 7

-saclike photosynthetic membranes found in chloroplasts (231)

Answer 7

thylakoid (8.2)

Question 8

-fluid portion of the chloroplast; outside of the thylakoids (231)

Answer 8

stroma (8.2)

Question 9

-carrier molecule that transfers high-energy electrons from chlorophyll to other molecules (232)

Answer 9

NADP+ {nicotinamide adenine dinucleotide phosphate} (8.2)

Question 10

-set of reactions in photosynthesis that uses energy from light to produce ATP and NADPH (233)

Answer 10

light-dependent reactions (8.2)

Question 11

-set of reactions in photosynthesis that do not require light; energy from ATP and NADPH is used to build high-energy compounds such as sugar; also called the Calvin cycle (233)

Answer 11

light-independent reactions (8.2)