What are some good questions to ask about cellular respiration?

What are some good questions to ask about cellular respiration?

Cellular respiration test questions

• What is the name of the high-energy molecule used by cells?
• Glycolysis occurs in which part of the cell?
• During glycolysis, glucose is split into two molecules of what?
• If oxygen is not present, pyruvate molecules undergo what?
• The diagram shows the citric acid cycle.

What factors affect cellular respiration lab answers?

Various factors, such as temperature change, will affect respiration, as well as the chemical oxidation of glucose. Oxygen consumption during respiration can then be measured as a change in gas volume by using a respirometer.

What are the 5 factors affecting cellular respiration?

The eight environmental factors effecting the rate of respiration are: (1) Oxygen Content of the Atmosphere (2) Effect of Temperature (3) Effect of Light (4) Effect of Water Contents (5) Effect of Respirable Material (6) Effect of Carbon Dioxide Concentration (7) Protoplasmic Conditions and (8) Other Factors.

What is the pre step in cellular respiration?

Glycolysis is the first step in cellular respiration, and is seen in both aerobic and anaerobic respiration. The products of glycolysis are pyruvate, NADH, ATP, and water. Oxygen is only a product of the light reactions of photosynthesis; it is consumed as a reactant in the electron transport chain.

What does cellular respiration depend on?

While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration.

How do you test cellular respiration?

Measuring the rate of cellular respiration can either rely on measuring the amount of oxygen taken in, or the amount of carbon dioxide being released. Respirometers are devices that measure these types of gas volume changes, and therefore provide information about the rate of cellular respiration.

What substance slows down the rate of cellular respiration?

The citric acid cycle (also known as the Krebs cycle) is the second pathway in cellular respiration, and it also takes place in the mitochondria. The rate of the cycle is controlled by ATP concentration. When there is more ATP available, the rate slows down; when there is less ATP the rate increases.

Why does temperature affect cellular respiration?

The increase in temperature enhances the rate of cellular respiration. It is due to the heat speeds up the reactions, means the kinetic energy is higher. It means reactions speed up and rate of cellular respiration increases. When temperature decreases, in order to conserve energy, cellular processes slow.

What increases cellular respiration?

Adding more reactants, like glucose, speeds up the reactions until the enzyme reaches max velocity. High oxygen levels allow cells to do aerobic respiration, which requires oxygen to make ATP and produces more ATP than in the absence of oxygen, called anaerobic respiration.

What are the 3 main stages of cellular respiration?

Summary: the three stages of Aerobic Respiration Carbohydrates are broken down using all three stages of respiration (glycolysis, citric acid cycle and the electron transport chain).

Can cellular respiration occur without photosynthesis?

Photosynthesis and cellular respiration are both part of a mutually beneficial relationship. Cellular respiration cannot occur without photosynthesis, and photosynthesis certainly cannot occur without the help of its partner.

What are 3 ways in which you can measure the rate of cellular respiration?

There are three ways to measure the rate of cellular respiration. These three ways are by measuring the consumption of oxygen gas, by measuring the production of carbon dioxide, or by measuring the release of energy during cellular respiration.

How is cellular respiration measured in lab?

What enzyme controls cellular respiration?

Several steps in glycolysis are regulated, but the most important control point is the third step of the pathway, which is catalyzed by an enzyme called phosphofructokinase (PFK).

What enzymes are used in cellular respiration?

These enzymes are isocitrate dehydrogenase and α-ketoglutarate dehydrogenase. When adequate ATP and NADH levels are available, the rates of these reactions decrease. When more ATP is needed, as reflected in rising ADP levels, the rate increases.

How does water levels affect cellular respiration?

Respiration rates affected by a decrease in water content. It means that a decrease in water content caused a decrease in oxygen consumption and respiration rates (Brix, 1962; Crafts, 1968).

How many ATP are produced in cellular respiration?

38 ATP molecules
During respiration, 38 ATP molecules are produced per glucose molecule. Out of these 38 molecules of ATP, 34 molecules of ATP are produced from the electron transport system.

In which organelle does cellular respiration occur?

mitochondria
While most aerobic respiration (with oxygen) takes place in the cell’s mitochondria, and anaerobic respiration (without oxygen) takes place within the cell’s cytoplasm.