Biology Chapter 7 Smartbook questions

Cellular respiration is a series of metabolic reactions in which the energy from organic molecules, such as glucose, is released and used to synthesize ______

ATP

In some cells, NADH made during glycolysis in the cytoplasm can only cross the mitochondria membranes by Multiple choice question.

a shuttle mechanism that uses one ATP for each NADH.

During the later steps of glycolysis the cell obtains

A total of 4 ATP, and a net gain of 2 ATP

Which stages of cellular respiration produce carbon dioxide?

Citric acid cycle, Preparatory reaction

The mitochondrial structure indicated by the arrow is the ______, which is the space between the outer and inner membranes of a mitochondrion.

Intermembrane space

Oxygen is required for cellular respiration because it

Is the final electron acceptor of the electron transport chain

How many ATP are required to shuttle an NADH molecule produced in the cytoplasm to the ETC in the mitochondria?

One ATP per NADH

During cellular respiration, the first CO2 is generated during ______ and the remaining carbons are given off as CO2 during ______.

The preparatory steps, the citric acid cycle

The breakdown of glucose into two pyruvate molecules is called

glycolysis

What molecule will accept the electrons at the end of the electron transport chain to form water?

oxygen

Glycolysis is an aerobic pathway of cellular respiration in which glucose is broken down into two molecules of ______.

pyruvate

As glucose is oxidized during cellular respiration, the coenzyme NAD+ accepts two electrons and is _______

reduced

Select the product(s) of glycolysis.

two pyruvate. two ATP (net).