Question 6(multiple choice worth 5 points)
(04.05 lc)

which of the following is a part of a land-based carbon cycle?

coral reefs
crab shells
trees
whales
question 7(multiple choice worth 5 points)
(04.02 mc)

the chemical equation shown represents photosynthesis.

carbon dioxide plus a plus light with a right-pointing arrow towards b plus oxygen. the arrow has an x above it.

x represents a substance in a plant involved in photosynthesis. what is its role?

it stores chemical energy for plants and animals.
it traps light energy and converts it into chemical energy.
it combines with carbon dioxide and light to form glucose.
it combines with carbon dioxide and light to form hydrogen.
question 8(multiple choice worth 5 points)
(04.05 mc)

what type of energy transformation takes place when carbon is cycled in a gasoline-based car?

thermal energy to thermal energy
chemical energy to chemical energy
thermal energy to mechanical energy
chemical energy to mechanical energy
question 9(multiple choice worth 5 points)
(04.02 mc)

the table below shows the role of different substances during photosynthesis.

substance role during photosynthesis
glucose stores chemical energy
water combines with glucose to form carbon dioxide
chlorophyll traps sunlight

which of the following statements would correct one of the roles listed in the table?
glucose combines with carbon to form water.
chlorophyll reacts with light to produce carbon dioxide.
water combines with carbon dioxide during photosynthesis.
chlorophyll stores chemical energy needed for photosynthesis.
question 10(multiple choice worth 5 points)
(04.03 mc)

which of the following processes does not take place during cellular respiration?

simple sugar breaks down.
carbon dioxide is released.
hydrogen of water is separated from oxygen.
chemical energy stored in food is utilized by the cell.
question 11(multiple choice worth 5 points)
(04.02 mc)

the balanced equation for photosynthesis is shown below.

6 co2 + 6 h2o → c6h12o6 + 6 o2

using the above equation, how would you prove the law of conservation of mass?

by showing that the numbers of atoms of different types are equal on both sides.
by showing that the numbers of atoms of the same type are equal on both sides.
by showing that the numbers of atoms of different types are not equal on both sides.
by showing that the numbers of atoms of the same type are not equal on both sides.
question 12(multiple choice worth 5 points)
(04.05 lc)

during which of the following processes would carbon most likely be required?

breaking of rocks
generation of electricity
making of glucose
running of cars