Cellular Respiration
two products of the Krebs cycle are
ATP and CO2
which of the following directly provides the energy needed for cell function
a phosphate group is removed from ATP
in the electron transport chain, energy from the Krebs cycle is used to pump hydrogen ions
across the inner mitochondrial membrane
which of the following molecules found in the food we eat is most commonly broken down to make ATP
carbohydrates
which end product of alcoholic fermentation is important in the baking industry
carbon dioxide
which of the following is a product of the Krebs cycle
carbon dioxide
Products of the Krebs cycle include
carbon dioxide, NADH, FADH2 (all of the above)
which of the following statements best describes cellular respiration
carbon-based molecules from food and oxygen are used to make ATP
which process breaks down sugars to make ATP when oxygen is present
cellular respiration
which process is best represented by the following chemical equation? sugars + oxygen -> carbon dioxide + water
cellular respiration
Which of the following statements is true of ATP
it transfers energy to cell processes
which end product of fermentation causes the burning feeling in muscles that are working hard
lactic acid
what is the main function of the Krebs cycle
producing molecules that carry high-energy electrons to the electron transport chain
which of the following are end products of glycolysis
pyruvate, NADH, and ATP
in glycolysis, for each molecule of glucose broken down to pyruvate
2 ATP are used and 4 ATP are made
Most ATP in eukaryotic cells is produced in the
mitochondria
what is the function of oxygen in cellular respiration
to pick up electrons at the end of the electron transport chain
which organisms use alcoholic fermentation to allow glycolysis to continue to produce ATP
yeasts
what molecule carries chemical energy that cells use for their functions
ATP
which of the following reactions provides the chemical energy for most cell functions
ATP - P -> ADP
in aerobic respiration carbohydrates are ultimately broken down into
CO2
what provides the electron transport chain in cellular respiration with the energy it needs to function
Krebs cycle
which stage of aerobic respiration produces ATP and NADH and releases CO2
Krebs cycle
which of the following types of organisms uses cellular respiration for their cellular energy needs
eukaryotes
in the presence of oxygen, all cells synthesize ATP via the process of glycolysis. many cells also can metabolize pyruvate if oxygen is not present, via the process of
fermentation
in which process is lactic acid formed when there is not enough oxygen present for cellular respiration to take place
fermentation
which process allows glycolysis to continue in the absence of oxygen
fermentation
before cellular respiration, glucose must be broken down by the process of
glycolysis
the part of cellular respiration in which glucose is broken down is called
glycolysis
what is the name of the process that breaks glucose down into the pyruvate that is used in cellular respiration
glycolysis
which stage of aerobic respiration requires ATP
glycolysis
energy is released from an ATP molecule for cellular processes when it
has a phosphate group removed
The aerobic stages of cellular respiration take place in the
mitochondria
the part of cellular respiration that needs oxygen takes place inside the
mitochondria
which stage of aerobic respiration requires CO2
none of these
the final electron acceptor in aerobic respiration is
oxygen
when pyruvate is a reactant in cellular respiration it means that
oxygen is present
which phrase about fermentation is correct
takes place without oxygen
where does the chemical energy to produce ATP come from?
the breakdown of carbon based molecules into the smaller molecules
