Biology Questions and Answers
- What are the three phases
into which the cell respiration
is divided?
The three phases orespiration are glycolysis,f aerobic cell Krebs cycle (^)
and respiratory chain the electron transport chain).(also known as
- What is glycolysis? What
are the products of this
process?
Glycolysis,cell respiration, is a the first stage oprocess in whichf the aerobic
glucose is dtwo pyruvic acid megraded (broken) to formolecules along with (^)
the formation of two ATP and two
NADH.
Glycolysis is a complex reaction
implying thintermediate mole formation oecules until pf severalyruvic (^)
acid molecules are made. Although two
ATP molecules arreaction, there is also pe consumed in theroduction of four (^)
molecules of ATP, thus a positive
balance oobtained. Two NADH mf two ATP moleculolecules ares is (^) e also
produced. In glycolysis the 6-carbon
structure organic chains oof glucose f three carbois broken and twons each are (^)
made; these chains givpyruvic acid molecules.e birth to two
- Does glycolysis occur
within the mitochondria?
Glycolysisnot within th happens in e mitochothe cytosolndria. Pyruvic and
acid molecules later enter mitochondria
to participate in the next phase of the
aerobic cell respiration.- How many ATP molecules
are made after glycolysis?
Glycolysisdegradation is a process similarin fermentation. It to glucoseproduces (^)
(final balance) two molecules of ATP for
each broken glucose.
- What is NAD? What is the
role of the NAD molecule in
glycolysis?
NAD (nicotinamide adenine
dinucleotide) necessary as reductant (to ris a hydrogen acceptoreceive
hydrogen) in some reactions in wis reduced and converted into NADHhich it
During glycolysis two NAD molecules^2.
retrieve intermediate reaction hydrogens liberated after thus formingan
NADH 2. - What happens during
aerobic respiration to the
pyruvic acid molecules made
by glycolysis? What is the
sequence of reactions that
then follows?
The pyruvic acid molecules made in
cytosolmitocho by glycolysisndria. enter into the
Within the mitochonacid molecule is convertdria eaced into oneh pyruvic
molecule of acetyl-CoA (acetyl
http://www.biology-questions-and-answers.com