WorksheetsChapter 7 Cellular Respiration
Total questions: 23
Worksheet time: 13mins
ATP
contains 5 phosphate groups
contains energy that is essential for a cell to function
is found only in bacteria
all of the above
The process of cellular respiration occurs in what type of organisms?
autotrophs
heterotrophs
autotrophs and heterotrophs
organisms that cannot photosynthesize
When glycolysis occurs
a molecule of glucose is split
two molecules of pyruvic acid are made
some ATP is produced
all of the above
The name of the process that takes place when organic compounds are broken down in the absence of oxygen is
respiration
oxidation
fermentation
all of the above
When muscles are exercised faster than the rate you are taking in oxygen...
34 ATP are formed
NADH molecules are split
lactic acid is produced
cellular respiration ceases
You have been growing some animal cells in culture. The cells grow well for several weeks, and then their growth slows down. You conduct some tests and determine that there is a lot of lactic acid in the culture fluid. Which of the following is most likely the explanation of the poor growth rate of the cells?
there is too much glucose in the culture fluid
there is not enough glucose in the culture fluid
there is too much oxygen in the culture fluid
there is not enough oxygen in the culture fluid
A protein in a cell membrane changed its shape to move sodium and potassium ions against their concentration gradients. Which molecule was most likely used by the protein as an energy source?
ATP
ADP
catalase
amylase
How many molecules of ATP are net gained from glycolysis?
1
5
2
3
Photosynthesis and cellular respiration are two major processes of carbon cycling in living organisms. Which statement correctly describes one similarity between photosynthesis and cellular respiration?
both occur in animal and plant cells
both include reactions that transform energy
both convert light energy into chemical energy
both synthesize organic molecules as end products
Where in eukaryotic cells does glycolysis take place?
cristae
cytosol
mitochondrial matrix
cell membrane
At the end of alcoholic fermentation, pyruvic acid is converted into
ethyl alcohol
carbon dioxide
oxygen
lactic acid
In the absence of oxygen, aerobic respiration cannot take place. Identify two pathways that could occur through fermentation.
lactic acid and glycolysis
glycolysis and alcohol
lactic acid and alcohol
Krebs cycle and citric acid cycle
If oxygen is not present, what happens to the Krebs cycle and the ETC?
the Krebs cycle will continue to run, but the ETC must shut down
both will stop functioning
the ETC will continue to run, but the Krebs cycle will shut down
both will continue to run
In cellular respiration, which pathway produces the most ATP?
glycolysis
Krebs cycle
fermentation
electron transport chain
What is the total amount of ATP produced at the very end of cellular respiration?
4
34
38
42
Which row in the chart identifies the lettered substances in the biological process?
row 1
row 2
row 3
row 4
What is a major difference between aerobic and anaerobic respiration?
they are both the same, there is nothing different
aerobic respiration does not require oxygen, while anaerobic respiration requires oxygen
aerobic respiration requires oxygen, while anaerobic respiration does not require oxygen
both types require oxygen but in different amounts
What is a major difference between aerobic and anaerobic pathways?
they are both the same, there is nothing different
more ATP is produced through aerobic respiration than through anaerobic respiration
more ATP is produced through anaerobic respiration than through aerobic respiration
both types require oxygen but in different amounts
What is a major difference between aerobic and anaerobic pathways?
they are both the same, there is nothing different
aerobic respiration involves lactic acid or alcoholic fermentation while anaerobic respiration includes the Krebs cycle and electron transport chain
both types require oxygen but in different amounts
aerobic respiration includes the Krebs cycle and electron transport chain while anaerobic respiration involves lactic acid or alcoholic fermentation
Mitochondria are often known as the powerhouse of the cell because their job is to create ATP. ATP is the energy carrier molecule and when the chemical bonds between phosphates are broken, energy is released. Cells that are active (muscle cells) tend to have more mitochondria than those cells that are not as active.
Think about the cell in the wing of a bee compared to a cell in the abdomen (belly) of a bee. Which cell would need more mitochondria and why?
the wing of the bee would need more mitochondria (energy) than the abdomen because a bee uses its wings to fly
the abdomen of the bee would need more mitochondria (energy) than the wings because it's legs are attached to its abdomen
bees don't have mitochondria in their cells because they get all of their energy from eating honey
both the wing and the abdomen would have the same amount of mitochondria because every part of the bee needs the same amount of energy
You are preparing for a marathon. The night before the race, you eat a large bowl of pasta and a baked potato. Both are high in carbohydrates. During the race you begin to feel hot and thirsty. You drink an energy drink to help you cool down.
Explain how your meal helps you to prepare to supply energy to your muscle cells during the marathon.
The meal will not help at all. It will just make you tired because you ate so much.
Since the meal is full of carbohydrates, it will provide your cells with long term energy needed to run the race.
Since the meal is full of carbohydrates, it will provide your cells with short term energy needed to run the race.
It doesn't matter what you ate the night before because you are definitely never running a marathon.
You are preparing for a marathon. The night before the race, you eat a large bowl of pasta and a baked potato. Both are high in carbohydrates. During the race you begin to feel hot and thirsty. You drink an energy drink to help you cool down.
Explain why you begin to feel hot during the race, in terms of energy and cellular respiration.
You feel hot during the race because it is hot outside. It has nothing to do with cellular respiration.
You feel hot during the race because your cells are taking in light energy from the sun and producing glucose.
You feel hot during the race because some of the energy produced during cellular respiration is released as heat energy.
You feel hot during the race just because.
You are preparing for a marathon. The night before the race you eat a large bowl of pasta and a baked potato. Both are high in carbohydrates. During the race you begin to feel hot and thirsty. You drink an energy drink to help you cool down.
During intense effort, muscle cells may switch to anaerobic respiration. Describe what you should do to avoid this during the race.
Eat candy while you are running so that you supply your cells with more glucose.
Alter your breathing techniques so that you supply your cells with more oxygen.
This answer is not correct.
This answer is not correct either.
