LT 3.4 - Chemical Reactions & Enzymes Test Review

In the chemical reaction: Methane + Oxygen turns into Carbon dioxide + Water, the methane and oxygen are called _______________.

• reactants

• products

• neutrals

• energizers

Which of the following binds to the active site of an enzyme? 

• substrate
• product
• codon
• none of the above

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

• Enzymes increase the energy of the reactants.
• Enzymes decrease the energy level of the products.
• Enzyme decrease the activation energy of the reaction.
• Enzymes reverse the direction of the reaction.

Tags

NGSS.HS-PS1-4

The "lock and key hypothesis" attempts to explain the mechanism of?

• Vacuole formation
• Pinocytosis
• Sharing of electrons
• Enzyme specificity 

What is indicated by letter A?

• enzyme
• product
• substrate
• active site

Some bacteria live in hot springs. Their cells contain enzymes that function best at temperatures of 70 °C or higher. At the temperature of 50 °C, how will the enzymes in these bacterial cells most likely be affected?

• The enzymes will be destroyed by lysosomes
• The enzymes will lose their bond structure and fall apart.
• The enzymes will require less energy to function than at 70 °C.
• The enzymes will not increase the rate of reactions as much as they would at 70 °C. 

Tags

NGSS.HS-PS1-5

The following figure is illustrating

• Dehydration Synthesis
• Hydrolysis

Tags

NGSS.HS-LS1-6

The following figure is illustrating

• Dehydration Synthesis
• Hydrolysis

Tags

NGSS.HS-LS1-6

In the chemical reaction: Methane + Oxygen turns into Carbon dioxide + Water, the carbon dioxide and water are called _______________.

• reactants

• products

• neutrals

• energizers

Which factors can change the shape of an enzyme and thus denatures a enzyme?

• Excessive heat and changes in pH
• Nothing can
• Exposure to light and sound
• Exposure to bacteria and Amoebas