Photosynthesis Test

Question 1

mass cannot be created nor destroyed. it can only change forms

Answer 1

law of conservation of mass

Question 2

light is used to make plant tissues

Answer 2

photosynthesis

Question 3

stored energy

Answer 3

potential energy

Question 4

energy in motion

Answer 4

kinetic energy

Question 5

light we can detect with our eyes

Answer 5

visible light

Question 6

has a shorter wavelength than visible light and is able to penetrate human tissue

Answer 6

ultra violent

Question 7

(heat) has longer wavelengths than visible light

Answer 7

infrared

Question 8

first photosynthetic cells

Answer 8

cyanobacteria

Question 9

first part of photosynthesis; only occurs when light is available

Answer 9

light-dependent reactions

Question 10

generates glucose

Answer 10

light-independent reactions

Question 11

tiny pores in leaves

Answer 11

stomata

Question 12

carbon sugar

Answer 12

G3P

Question 13

enzyme that attaches the molecule of carbon dioxide to the 5-carbon molecule RuBP

Answer 13

Rubisco

Question 14

oxygen is added to the calvin cycle instead of carbon dioxide

Answer 14

photorespiration

Question 15

specialized storage organelles that produce and store starch

Answer 15

amyloplast

Question 16

true or false: In photosystem II, a photon strikes an arrangement of chlorophyll causing the excitement of electrons and splitting of water

Answer 16

true

Question 17

true or false: In photosystem I, the electron is re-energized by another photon and used to generate an electron carrier called NADPH

Answer 17

true

Question 18

the primary location of photosynthesis is _________, which contain the organelle __________, each of which is filled with the green pigment _________.

Answer 18

leaves, chloroplast, chlorophyll

Question 19

list the primary constituents of air

Answer 19

• 78 nitrogen
• 21 oxygen
• .9 argon
• .03 carbon dioxide
• .02 water

Question 20

for a long time, the conventional wisdom was that plants gained most of their mass by “eating” or absorbing nutrients from soil. In reality, where does most of their mass come from?

Answer 20

in reality, plants need water and sunlight.

Question 21

what is the kinetic energy that plants utilize in photosynthesis? what form of potential energy are they producing?

Answer 21

kinetic- release of carbon dioxide

potential- stored glucose

Question 22

what specific wavelengths of energy are utilized by plants in photosynthesis

Answer 22

infrared

Question 23

write out the complete reaction for photosynthesis. which reactant molecules provide the atoms of carbon, hydrogen, oxygen needed to synthesize glucose.

Answer 23

carbon dioxide and water are used to synthesize glucose, which are then to be used to produce starch or cellulose

Question 24

why is the enzymw rubisco called “the bridge of life”? what exactly does it do

Answer 24

Carbon dioxide is considered a lifeless molecule, but RuBP is organic and part of the plants cellular processes

Question 25

which pigments of visible light do plants absorb and use for photosynthesis? which are reflected

Answer 25

absorbed- all colors but green

reflected- green

Question 26

what conditions lead to photorespiration. why is it xonsidered a wasteful process for plants

Answer 26

dehydration leads to photorespiration.

no ATP or sugar is produced by this process, while a lot of the carbon compounds in the plants are consumed

Question 27

compare how C4 and CAM plants are adapted to minimize the costs of photorespiration.

Answer 27

C4 plants minimize the costs by moving the carbon fixation process to mesophyll
CAM plants minimize the costs by only opening their stomata at night when the air is cooler

Question 28

photo meaning light
auto meaning self
troph meaning nutrition

Answer 28

photoautotroph