Cellular Respiration

How do electrons get to the electron transport chain?

• They are transported by ADP and phosphate

• They come from water

• They are transported by the electron carriers NADH and FADH2

• They are created through fission and splitting atoms

What do electrons do in the electron transport chain?

• They pump electrons across the membrane into the matrix

• They help pump protons (hydrogen ions) into the intermembrane space

• They pump water into the matrix

• They create ATP directly

What is the role of oxygen in the electron transport chain and why is this so important?

• It pumps hydrogen ions across the membrane creating a concentration gradient

• It breaks down carbon dioxide to form water so you can stay hydrated

• It becomes ATP which is necessary for cell functioning

• It accepts the electrons from the ETC, which allows ETC to continue working

Why do living things do respiration?

• To gradually release the energy in food to make ATP

• To burn the ATP in cells and use it for energy

• To cause cells to combust rapidly

• To create sugars that cells need for energy

What gets oxidized and broken down during glycolysis?

• Pyruvate

• NADH

• Glucose

• ATP

What are the products of glycolysis?

• Glucose and oxygen

• 2 pyruvates, 2 NADH, and 2 ATP

• 2 NAD+, 1 glucose, and 2 carbon dioxides

• Water and carbon dioxide

What are the productsof the Kreb's cycle?

• ATP, Carbon dioxide, NADH, and FADH2

• ATP and carbon dioxide

• Acetyl-CoA, carbon dioxide, and NADH

• carbon dioxide and water

You noticed that the Krebs cycle makes many electron carriers (NADH and FADH2). WHy are these important?

• THey transport carbon dioxide around the body

• THey carry electrons to the electron transport chain

• They break down glucose

• They produce oxygen

Which of the following facts illustrates that Krebs cycle is, in fact, a cycle?

• Acetyl-CoA enters the cycle

• ATP is produced in the cycle

• NADH is produced in the cycle

• Oxaloacetate is the starting and ending compound of the cycle

How does ATP synthase work?

• When NADH touches it, it makes ATP

• As electrons are passed to it, it makes ATP

• As protons diffuse through it, it spins and makes ATP

• It transports electrons to the next molecules in the ETC