Science 9 Second Quarter Exam

Which organelle is responsible for photosynthesis?

• Mitochondrion

• Nucleus

• Chloroplast

• Ribosome

What are the reactants/raw materials of photosynthesis?

• Glucose and oxygen

• Carbon dioxide and water

• Oxygen and water

• Glucose and carbon dioxide

What pigment in the chloroplast absorbs sunlight?

• Carotenoid

• Chlorophyll

• Xanthophyll

• Hemoglobin

Where does gas exchange primarily occur in plants?

• Roots

• Stem

• Stomata

• Chloroplast

Where does the light-independent reaction (Calvin Cycle) occur?

• Thylakoid membrane

• Stroma

• Cytoplasm

• Mitochondria

What is the primary source of energy for photosynthesis?

• Heat

• Sunlight

• Chemical energy

• ATP

What is the main purpose of cellular respiration?

• To produce glucose

• To break down glucose

• To absorb sunlight

• To break down water molecules

Which organelle is responsible for cellular respiration?

• Chloroplast

• Ribosome

• Nucleus

• Mitochondrion

How many molecules of ATP are typically produced at the end of cellular respiration from one molecule of glucose?

• 2

• 18

• 38

• 100

Where does glycolysis occur?

• Cytosol of cytoplasm

• Mitochondrial matrix

• Thylakoid membrane

• Stroma