30 Questions
What is the primary purpose of the electron transport chain in cellular respiration?
To generate ATP through the breakdown of glucose
What is the net result of the overall chemical change during photosynthesis?
CO2 is reduced to produce sugar and O2 is oxidized
What is the primary function of the Electron Transport Chain in cellular respiration?
To convert energy stored in electrons into ATP
Which stage of cellular respiration produces the most ATP?
Oxidative phosphorylation
Which process is responsible for capturing light energy and converting it into chemical energy in photosynthesis?
Chlorophyll molecules
What is the byproduct of cellular respiration that is essential for the survival of most organisms?
O2
What is the end product of glycolysis?
Pyruvate
In which part of the cell does cellular respiration take place?
Mitochondria
What is the role of substrate-level phosphorylation in cellular respiration?
To supply the 3rd stage of cellular respiration with electrons
In which stage of cellular respiration does pyruvate oxidation occur?
Pyruvate oxidation and the citric acid cycle
What is the primary source of energy for almost all ecosystems?
Sunlight
What is the net gain of ATP molecules during glycolysis?
A small amount of ATP
What is the primary function of the electron transport chain in cellular respiration?
To generate ATP from NADH and FADH2
What is the net ATP yield per glucose molecule during fermentation?
2 ATP
What is the role of NADH in fermentation?
To provide an anaerobic path for recycling NAD+ back to NADH
What is the primary difference between lactic acid fermentation and alcohol fermentation?
The end product of the fermentation process
What is the purpose of the hydrogen atoms in fats during cellular respiration?
To provide energy for ATP production
What is the role of feedback inhibition in metabolic pathways?
To prevent the accumulation of product and suppress the process that produces it
What type of organisms are the primary producers of the biosphere?
Autotrophs
What is the by-product of photosynthesis that is essential for other metabolic processes?
Oxygen
What process do autotrophs use to convert solar energy into chemical energy?
Photosynthesis
What is the name of the process by which organic molecules are oxidized to generate utilizable chemical energy?
Cellular respiration
What type of organisms depend on photoautotrophs for food and oxygen?
Heterotrophs
What is the purpose of the electron transport chain in cellular respiration?
To generate ATP
What is the origin of oxygen produced during photosynthesis?
Water
Where are chloroplasts concentrated in a leaf?
In the mesophyll cells
What is the role of chlorophyll in photosynthesis?
To convert light energy into chemical energy
What is the function of stomata in a leaf?
To absorb CO2 from the atmosphere
What is the location of the chloroplast's inner and outer membranes?
In the stroma
What is the term for the green tissue in the interior of a leaf?
Mesophyll
This quiz covers the process of cellular respiration, including pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation. It also explores the total yield of ATP molecules per glucose molecule and the role of NADH and FADH2 in energy production. Test your knowledge of cellular respiration and ATP production!
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