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bio quiz 3
Terms in this set (43)
atp-generating process that involves the complete breakdown most often of glucose to carbon dioxide and water. It is aerobic and requires oxygen
where does cellular respiration take place in eukaryotic cells
begins in the cytoplasm and completed in mitochondria
cellular respiration equation
C6H12O6 (glucose)+6O2(oxygen)----->6CO2 (carbon dioxide)+6 H2O+ATP
How does mitochondria use energy
uses energy from glucose to form ATP from ADP+P
an ATP-generating process. when an organism, such as yeast, breaks down glucose to ethanol and carbon dioxide, only 2 ATP result but the process is anerobic and does not require oxygen
Process that does not require oxygen
Process that requires oxygen
where does fermentation occur
in the cytoplasm; mitochondria are not involved
yeast fermentation equation
what do animals, such as humans produce when they ferment
lactate instead of ethanol and carbon dioxide
when germination occurs and plants begin to grow, what provides them with ATP
cellular respiration provides ATP to allow the molecules to grow
germinating soybeans need
O2 and glucose enter the cells which release
H2O and CO2
mitochondria use energy from glucose to form _____ from ______
ATP from ADP+P
___________ is an ATP generating process
O2 is evidence that the plants are carrying on _______ and lack of CO2 uptake is evidence that plants are not carrying on _______
why was it necessary to absorb CO2
the carbon dioxide given off would not allow you to detect that oxygen was taken up
What is the role of glucose and other sugars in femerntation
to provide a source of energy for the yeast
in the cellular respiration experiment what gas was taken up by the soybeans
What is the role of KOH in cellular respiration
takes up carbon dixode given off by cellular respiration
What is the role of germinating soybeans in cellular respiration
they are metabollically active so any changes signifies the extent of cellular respiration
What is the role of non germinating soybeans in cellular respiration
not metabollically active so any change in this tube is used as a correction due to atmosphereic pressure and temperature changes
If you performed the cellular respiration experiment without soaking the cotton with KOH, what results would you predict? . Why?
No net change in both vial 1 in addition to 2
The carbon dioxide given off in vial 1 will obscure the uptake of oxygen in that vial.
Soybeans don't move as animals do. For what purpose do they need energy?
to maintain their bodies and grow
respiration and fermentation ordinarily begin with what molecule?
How do the overall equations for these processes indicate that fermentation is anaerobic and that cellular respiration is aerobic?
Fermentation has no oxygen in the equation; cellular respiration does.
Glucose breakdown results in the breaking of C—H bonds and stored energy is released. Contrast the end products of fermentation and cellular respiration in terms of their energy content
The end products of fermentation, such as ethanol, have C—H bonds, and, therefore, more energy content than carbon dioxide without C—H bonds and water, the end products of cellular respiration.
Fermentation results in the net production of only 2 ATP, while cellular respiration results in many more ATP. Explain these results with reference to the end products of both of these processes.
Ethanol contains energy that could have been used for ATP production.
In Experimental Procedure: Yeast Fermentation, the gas bubble got larger. What gas was causing this increase in bubble size?
Why might you hypothesize that, of the three sugars (glucose, fructose, and sucrose), glucose would result in the most activity during the fermentation experiment?
Glucose is the sugar organisms usually metabolize. glucose has a simple structure that is easy to breakdown
to build up molecules, ex. photosynthesis, stores potential energy
to break up molecules, ex. cellular respiration. release chemical energy through atp
can yeast undergo metabolic reaction without oxygen
what is the first step in breaking down glucose
pyruvic acid + 2 atp + 2 nadh
further breakdown of glucose with absence of oxygen
lactic acid formula
c6h12o2->pyruvic->lactic acid (muscles)
cellular respiration formula
where does krebs aka citric acid cycle take place
matrix of mitochondria
where does electron transport system take place
inner mitochondria membrane
what was the best temp for yeast cells fermentation
what had the most bubbles
glucose bc it breaks down faster due do its simple structure
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