Unit 3A: Cell Energy

Photosynthesis is BEST represented by which of the following?

• 6H₂0 + 6C0₂ C₆H₁₂O₆ + 6O₂

• C₆H₁₂O₆ + 6O₂ 6CO₂ + 6H₂0

• C₆H₁₂O₆ + 6O₂ 6CO₂ + 6H₂ + 3O₂

• 6COOH + 3H₂0 + 3O₃ C₆H₁₂O₆ + 6O₂

Which of the following is released when ATP is converted to ADP and inorganic phosphate?

• energy

• oxygen

• carbon dioxide

• water

Energy produced by cellular processes, such as photosynthesis and respiration, is stored by

• ATP

• ADP

• DNA

• RNA

ATP molecules store energy for cellular activity. When the bond holding the third phosphate is broken,

• all cellular activity stops.

• energy is released and changes ATP to ADP.

• energy dissipates and metabolic functions increase.

• energy is stored

Which part of the cell provides energy through the process of cellular respiration?

• cell wall

• cytoplasm

• mitochondrion

• cell membrane

Some cells, such as human nerve and muscle cells, contain many more mitochondria than do other cells, such as skin cells. Why do some cells have more mitochondria than others?

• The cells store more nutrients.

• The cells use more energy.

• The cells degrade more proteins.

• The cells divide more frequently.

Which set of chemical reactions is performed by the chloroplast of the cell?

• carbon dioxide + water glucose + oxygen

• glucose + oxygen ATP energy + water + carbon dioxide

• glucose ATP energy + lactic acid

• amino acids + tRNA + mRNA proteins + tRNA + mRNA

Photosynthesis is a chemical process and can be represented by a chemical equation. What are the products of this chemical process?

• water and carbon dioxide

• carbon dioxide and glucose

• glucose and oxygen

• hydrocarbons and glucose

Which of the following molecules provides the energy for glycolysis?

• DNA

• ATP

• Amino Acid

• Carbon Dioxide

Study the equation below:

6CO2 + sunlight --> C6H12O6 + 6O2

Which reactant is missing from the equation?

• sugar

• water

• carbon

• hydrogen