Cell Biology: Cellular Respiration

Which two activities provide the reactants for cellular respiration? releasing air and exercising breathing in air and exercising releasing air and eating food breathing in air and eating food

breathing in air and eating food

Which chemical can be toxic to the cells if it is not removed? oxygen glucose water carbon dioxide

carbon dioxide

Which is a product of the cellular respiration reaction? glucose carbon dioxide blood cells

carbon dioxide

a process that uses oxygen to break down sugars to provide energy for the cell

cellular respiration

In which part of the cell is the majority of the energy released from the breakdown of glucose? nucleus mitochondrion cytoplasm plasma membrane

mitochondrion

Which is a reactant in the cellular respiration reaction? water oxygen mitochondria cytoplasm

oxygen

Complete the chemical equation for cellular respiration. Glucose + ____ → ______ + water + ______ glucose oxygen carbon dioxide water energy sugar

oxygen; carbon dioxide; energy

The substances that are present after any chemical reaction are called _____. dioxides oxygen products reactants.

products

the substances present after a chemical reaction occurs

products

The substances that are present before any chemical reaction are called ____. dioxides oxygen products reactants

reactants

the substances present before a chemical reaction occurs

reactants

Summarize the two stages of cellular respiration. Be sure to explain where in the cell each stage occurs.

- The first stage of cellular respiration occurs in the cytoplasm. - In the cytoplasm, glucose is broken down into smaller molecules. A small amount of energy is also released. - The second stage occurs in the mitochondrion. - In the mitochondrion, the small molecules combine with oxygen to produce water, carbon dioxide, and a large amount of energy.

What role does blood play before cellular respiration can occur? Blood releases energy from very small molecules. Blood carries energy from cytoplasm to a mitochondrion. Blood delivers oxygen and glucose to cells. Blood delivers carbon dioxide and water to cells.

Blood delivers oxygen and glucose to cells.

How does cellular respiration explain why animals breathe rapidly when they are running? - Energy is used up while running, and cellular respiration needs oxygen to produce more energy. - Energy is used up while running, and cellular respiration needs carbon dioxide to produce more energy. - Glucose is used up while running, and cellular respiration needs oxygen to make glucose. - Glucose is used up while running, and cellular respiration needs carbon dioxide to make glucose.

Energy is used up while running, and cellular respiration needs oxygen to produce more energy.

Which explains why it is important to eat a full healthy meal before an afternoon of playing sports? - Food provides the carbon dioxide that is a product of cellular respiration. - Food provides the oxygen that is a product of cellular respiration. - Food provides the glucose that is a reactant in cellular respiration. - Food provides the energy that is a reactant in cellular respiration.

Food provides the glucose that is a reactant in cellular respiration.

What happens to the energy that is stored in cells? It is released slowly. It is released quickly. It is released in a single reaction. It is released in a series of reactions. It is used by cells for repair and growth.

It is released slowly. It is released in a series of reactions. It is used by cells for repair and growth.

Which statement describes the role of a mitochondrion in providing a body with energy? - It stores glucose that is taken from food so that respiration can happen later. - It combines blood and oxygen so that energy can be released from glucose. - It is the site where oxygen combines with small molecules and releases large amounts of energy. - It is the site where food is broken down into small molecules and amounts of energy.

It is the site where oxygen combines with small molecules and releases large amounts of energy.

How does cellular respiration help heal a bruise? It produces the oxygen used to heal cells. It produces the glucose used to heal cells. It produces the energy used to heal cells. It produces the mitochondria used to heal cells.

It produces the energy used to heal cells.

Which statements best describe the first stage of cellular respiration? The stage happens in cytoplasm. The stage happens in mitochondria. Oxygen combines with small molecules. Glucose is broken down. Energy is released.

The stage happens in cytoplasm. Glucose is broken down. Energy is released.

Which statements best describe the second stage of cellular respiration? The stage happens in cytoplasm. The stage happens in mitochondria. Oxygen combines with small molecules. Glucose is broken down. Energy is released.

The stage happens in mitochondria. Oxygen combines with small molecules. Energy is released.

What are water and carbon dioxide in the cellular respiration reaction? - They are reactants because they are present before the reaction. - They are reactants because they are present after the reaction. - They are products because they are present before the reaction. - They are products because they are present after the reaction.

They are products because they are present after the reaction.

What role do glucose and oxygen play in cellular respiration? - They are reactants because they are present before the reaction. - They are reactants because they are present after the reaction. - They are products because they are present before the reaction. - They are products because they are present after the reaction.

They are reactants because they are present before the reaction.

Mr. Swerdlow wrote a chemical equation on the board and asked his class what should be changed to make it correct. He wrote: water + carbon dioxide → glucose + oxygen + energy What should be changed to show the correct chemical reaction?

Water and carbon dioxide should both be moved to the products side, and glucose and oxygen should be moved to the reactants side.

Mrs. Zerlinsky wrote a chemical equation on the board and asked her class what should be changed to make it correct. She wrote: water + glucose → carbon dioxide + oxygen + energy What should be changed to show the correct chemical reaction?

Water should be traded with oxygen.

At which stage is glucose broken into smaller molecules? before cellular respiration begins during the first stage of cellular respiration during the second stage of cellular respiration at the end of cellular respiration

during the first stage of cellular respiration

Which must an animal do in order for cellular respiration to begin? turn energy into sugars eat food gain energy change sugars into food

eat food

Which product of respiration is used for tissue repair and cellular function? carbon dioxide water energy oxygen

energy

The main sugar that is used as a reactant in cellular respiration is called ______.

glucose

the main sugar that provides energy for cells

glucose

What are the reactants of cellular respiration? Check all that apply. carbon dioxide energy glucose oxygen water

glucose oxygen

In which way will energy be used after it leaves the mitochondrion during cellular respiration? repairing parts of damaged tissue combining with carbon dioxide building new oxygen molecules starting the second stage of respiration

repairing parts of damaged tissue