Chemical Reactions Review

What is the chemical formula for glucose, a product of photosynthesis?

Tags

TX.112.42.C.11.A.

Which of the following is a simple procedure to demonstrate the conservation of matter in photosynthesis?

• Measuring the mass of a plant before and after photosynthesis

• Observing the color change in leaves

• Counting the number of leaves on a plant

• Measuring the height of a plant

Tags

TX.112.42.C.11.A.

Explain how energy is transferred during cellular respiration.

• Energy is transferred from glucose to ATP.

• Energy is transferred from ATP to glucose.

• Energy is transferred from oxygen to carbon dioxide.

• Energy is transferred from water to glucose.

Tags

TX.112.42.C.11.A.

Which of the following best describes the role of enzymes in cellular processes?

• Enzymes slow down chemical reactions.

• Enzymes act as catalysts to speed up chemical reactions.

• Enzymes are consumed in the reactions they facilitate.

• Enzymes are only involved in photosynthesis.

Tags

TX.112.42.C.11.B.

Using the chemical equation for photosynthesis, explain how matter is conserved.

• The number of atoms of each element is the same on both sides of the equation.

• The number of molecules is greater on the product side.

• The number of atoms of each element is different on both sides of the equation.

• The number of molecules is greater on the reactant side.

Tags

TX.112.42.C.11.A.

Describe a model that can be used to explain the role of enzymes in a specific cellular process.

• A lock and key model showing enzyme-substrate interaction

• A model showing enzymes being consumed in reactions

• A model showing enzymes as products of reactions

• A model showing enzymes as reactants

Tags

TX.112.42.C.11.B.

What is the primary role of chlorophyll in photosynthesis?

• To absorb light energy

• To release oxygen

• To produce glucose

• To absorb carbon dioxide

Tags

TX.112.42.C.11.A.

Which of the following is a product of cellular respiration?

• Oxygen

• Glucose

• Carbon dioxide

• Water

Tags

TX.112.42.C.11.A.

How do enzymes affect the activation energy of a chemical reaction?

• Enzymes increase the activation energy required.

• Enzymes decrease the activation energy required.

• Enzymes do not affect the activation energy.

• Enzymes eliminate the need for activation energy.

Tags

TX.112.42.C.11.B.

Evaluate the impact of temperature on enzyme activity in cellular processes.

• Enzyme activity decreases with increasing temperature.

• Enzyme activity increases with increasing temperature up to a point, then decreases.

• Enzyme activity is unaffected by temperature.

• Enzyme activity only increases with decreasing temperature.

Tags

TX.112.42.C.11.B.