BIO110 Chapter 8 (UNIT 3)

select the pathway that doesnt use oxygen

Fermentation

The production of alcohol or lactate from pyruvate during _ occurs as a means of regenerating _ from _.

Fermentation; NAD+; NADH

Which process doesnt match the location of a typical eukaryotic cell?

glycolysis - mitochondria

Enzymes are important biological catalysts because they

lower the activation energy of a biochemical reaction

Catabolic reactions involve the

breakdown of large organic molecules to simple building blocks

Organismal body heat is a

byproduct of exergonic reactions

When hydrogen ions (protons) are pumped across the inner mitochondrial membrane, they form a proton gradient. ATP is then formed by a process known as:

chemiosmosis

A glucose molecule that is metabolized via aerobic respiration has been completely broken down and released by CO2 by the end of

citric acid (Kreb's) cycle

Glycolysis yields a net gain of ____ ATP molecules per molecule of glucose?

2

During chemiosmosis, ____ are transferred from NADH and FADH2 to electron acceptor molecules, and the energy released is used to create a(n) ____ gradient across the inner mitochondrial membrane

electrons/proton

NADH and FADH2 are products of

oxidation - reduction reactions

during aerobic respiration, oxygen is

reduced

In the acetyl-CoA formation step, the products are

2 acetyl CoA + 2 CO2 + 2 NADH

when 1 molecule of glucose is completely oxidized in aerobic respiration, the net amount of ATP produced is

36 or 38

The overall reaction for the aerobic respiration of glucose is summarized as

C6H12O6 + O2 + H2O -> CO2 + H2O + energy

Which of the following molecules can be used as a substrate for cellular respiration?

Glucose, lipids, proteins and fatty acids

FAD and cytochromes are classified as

Hydrogen or electron acceptors

In aerobic respiration, the electrons associated with the hydrogen atoms in glucose are ultimately transferred to:

Oxygen in a series of steps

Aerobic respiration

Produces ATP

Which of the following statement about the electron transport chain is true:

Proton gradient established during electron transport is a form of potential energy