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Photosynthesis: Section 4.5

Total questions: 10

Worksheet time: 3hrs 30mins

Name
Class
Date
1.

What is the source of energy for living organisms?

a)

Chemical Energy

b)

Nuclear Energy

c)

Sun (Light Energy)

d)

Heat Energy

2.

What occurs in the process of photosynthesis?

a)

Plants convert light energy from the sun into chemical energy that is stored in complex sugar molecules (food)

b)

Food is chemically bonded with oxygen then to carbon dioxide and water. The energy released is trapped in the form of ATP for use by all the energy-consuming activities of the cell

c)

an organism duplicates its genetic material, or deoxyribonucleic acid (DNA), and then divides into two parts (cytokinesis), with each new organism receiving one copy of DNA

d)

any situations in which more individuals are born than can survive (the struggle for existence)

3.

What organisms are capable of the process of photosynthesis?

a)

mushrooms, yeasts, molds, truffles

b)

bunnies, deer, mice

c)

llamas, horses, goats

d)

green plants, algae, cyanobacteria

4.

The first step of photosynthesis is the absorption of ________?

a)

gravitational energy

b)

chemical energy

c)

atomic energy

d)

light energy

5.

________, a green pigment that gives plants their color, absorbs light energy.

a)

stoma

b)

chlorophyll

c)

lipid

d)

granum

e)

chlorplast

6.

What are the reactants for photosynthesis?

a)

peroxide (H2O2), baking soda (NaHCO3)

b)

light energy (E), carbon dioxide (CO2), water (H2O)

c)

Caffeine (C8H10N4O2), Nitrogen (N2O), Sugar (CnH2nOn)

d)

calcium oxide (CaO), Cholesterol (C27H46O), water (H2O)

7.

What are the products of photosynthesis?

a)

water (H2O), carbon dioxide (CO2)

b)

carbonic acid (H2CO3), oxygen gas (O2)

c)

sugar molecules (C6H12O6), oxygen gas (O2)

d)

oxygen (O), hydrogen (H2)

8.

What's the overall equation for photosynthesis using words

a)

Hydrogen + Oxygen → Water

b)

glucose + oxygen → carbon dioxide + water + energy

c)

methane + oxygen → carbon dioxide + water

d)

Carbon Dioxide + Water + Energy → Sugar Molecule + Oxygen

9.

Write the overall equation for photosynthesis using chemical formulas

a)

C6H12O6 + 6O2 → 6CO2 + 6H2O

b)

CO2+H2O+E → C6H12O6+O2

c)

NaHCO3 + HC2H302 = NaC2H302 + H2O + CO2

d)

4Fe + 3O2 → 2Fe2O3

10.

Is photosynthesis an example of a synthesis reaction or a decomposition reaction?

a)

Synthesis Reaction - It is the building up of a complex molecule from smaller, simpler compounds

b)

Decomposition Reaction - it breaks down hydrogen peroxide to water and oxygen transfers to chemical energy

c)

Synthesis Reaction - It is the building of a simple molecule from larger, complex compounds

d)

Decomposition Reaction - it breaks down the chloroplast into light energy transfers to heat