Cellular respiration Flashcards
aerobic harvest food of energy
cellular respiration
cellular respiration is an _____ process
aerobic
what are the 2 gases exchanged during respiration
oxygen & carbon dioxide
exchange of carbon dioxide produced during cellular respiration for atmospheric oxygen
breathing
using oxygen to help harvest energy from glucose and produces carbon dioxide in the process
cellular respiration
what is C6H12O6
glucose
organic molecules are broken down to harvest chemical energy which is stored in the bonds of ATP
cellular respiration
a substance that loses electron is considered as
oxidation
a substance that gains hydrogen atom is considered as
reduction
a substance that loses hydrogen atom is considered as
oxidation
a substance that gains electron is considered as
reduction
the fuel that is being oxidized in cellular respiration
glucose
substance that is being reduced in cellular respiration
oxygen
glucose will undergo oxidation and ____ electron and hydrogen
lose
substance that will gain hydrogen atom
oxygen
products of cellular respiration
carbon dioxide, water, energy
state the product of this process:
C6H12O6 + 6O2 ->
6CO2 + 6H2O + energy
name 2 electron carriers involved in cellular respiration
NAD+ , FAD+
electron carriers will be ____ in cellular respiration
reduced
NAD+ will be reduced to _____
NADH
FAD+ will be reduced to _____
FADH2
glucose and other organic molecules are broken down in a _____
series of steps
what is meant by the series of steps in cellular respiration
transferring electrons
electrons from organic compound are not _______ to oxygen
transferred directly
electrons are passed to ______ instead of passed directly to oxygen
electron carriers
can NADH be transformed into its original form?
yes
how can NADH be transformed to NAD+ back again?
through oxidation
how to ensure that the electrons can be passed to oxygen through NADH
NADH must pass the electrons so that it can be deoxidized to NAD+
can NADH function as a carrier again?
yes
name the process that passes electrons in a series of steps instead of one explosive reaction
the electron transport chain
explain the significance of electron transport chain
there will be a controlled release of energy.
no energy wasted
why cant we opt for the one explosive reaction?
it will release a lot of heat energy that cant be used
state the equation for reduction of NAD+
NAD+ –> NADH + H+
state the equation for reduction of FAD
FAD –> FADH2
______ represent the stored energy that can be tapped to make ATP when electron complete their fall down an energy gradient
electron carriers
state the name of ATP
adenosine triphosphate
a substance that stores and transport energy within cells
ATP
ATP is also known as the _____
universal energy carrier
ATP is a nucleotide with _____ bonds
unstable phosphate
what is being hydrolyzed for energy in ATP
the unstable phosphate bond
coupling of exergonic reactions to endergonic reactions is a process that is done by ____ to _____
by ATP to power cellular work
what is released when an ATP is hydrolyzed?
energy
3 substance that combine together to make ATP
hint: prn
phosphate group, ribose, nitrogenous base(adenine)
name a substance that has 5-carbon sugar
ribose
breaking the high energy bonds between the last 2 phosphate in ATP is a _____ process
hydrolysis
how do we get the energy from ATP?
by breaking the high energy bonds between the last 2 phosphate group in ATP
is the hydrolysis of ATP an exergonic/endergonic reaction?
exergonic
7.6 kcal of energy
energy released when a mole of ATP is hydrolyzed
name 3 mechanisms to generate ATP
hint : sop
substrate-level phosphorylation
oxidative phosphorylation
photophosphorylation
name the process that transfers a high-energy phosphate group from a substrate directly to ADP
substrate-level phosphorylation
what is meant by oxidative phosphorylation?
harvest of energy from food
name the process where food is oxidized and the energy is extracted by an electron transport chain
oxidative phosphorylation
chemiosmosis
a process to make ATP
name the process of harvesting energy from sunlight
photophosphorylation
a process where the light energy is used to generate electron
photophosphorylation
movement, anabolic process, secretion, active transport is the significance of _____
ATP
ATP –> ADP + P
is this an exergonic or endergonic reaction
exergonic
will the hydrolysis of ATP to ADP + P release energy?
yes
ADP + P –> ATP
is this an exergonic or endergonic reaction
endergonic
does the synthesis of ATP from ADP needs energy?
yes
what is the enzyme involved in the synthesis of ATP
ATP synthase
what is the enzyme involved in the hydrolysis of ATP
AT Phase
_____ is a metabolic pathway that breaks down glucose
cellular respiration
is cellular respiration anabolic or catabolic? explain the reason.
catabolic. because larger glucose breaks into smaller molecules.
state 3 stages of cellular respiration
hint: gko
glycolysis
kreb’s cycle
oxidative phosphorylation
a process that breaks down into 2 molecules of pyruvate
glycolysis
a process that completes the break down of glucose
kreb cycle
the other name for kreb cycle
citric acid cycle
a process that accounts for most of the ATP synthesis
oxidative phosphorylation
where does the glycolysis occurs?
cytoplasm
where does the kreb cycle occurs?
mitochondria
where does the oxidative phosphorylation occurs?
mitochondria