NEW
Font size
Worksheets12th Grade Unit Test ; Metabolism
Total questions: 43
Worksheet time: 43mins
Which metabolic process involves the breakdown of complex molecules into simpler ones to release energy?
During which metabolic process are new molecules and structures built by the cell, requiring an input of energy?
Fermentation
Which metabolic process typically involves the release of energy, such as in the digestion of food?
Anabolism
Carabolism
Which of the following is NOT a function of enzymes in biological systems?
Regulating metabolic pathways
Facilitate specific reactionsEnhancing reaction specificity
hat is the term for the specific region on an enzyme where a substrate binds and a chemical reaction takes place?
Enzyme activity is highly sensitive to changes in which environmental factor?
What are the two main components that make up an enzyme, and what roles do they play in the enzyme's function?
Activator and inhibitor, controlling enzyme activity.
Enzyme names often end in "-ase." Which of the following is an enzyme responsible for breaking down starch into simpler sugars?
Which of the following best describes the Lock and Key model of enzyme-substrate interactions?
Enzymes have specific active sites that complement the shape of substrates.
The enzyme and substrate do not interact at all. the enzyme is consumed
What happens to the enzyme after it catalyzes a reaction in the Lock and Key model?
The enzyme changes shape and cannot be used againThe enzyme undergoes a structural change and loses its activity.
The enzyme binds irreversibly to the substrate.
How does an increase in temperature typically affect enzyme activity?
Enzyme activity remains constant regardless of temperature changes.
What is the process through which the majority of ATP is produced?
Photosynthesis
Respiration
Exercise
Nucleotides
What is the full name of the molecule ATP?
Adenine Diphosphate
Adenosine Diphosphate
Adenine Triphosphate
Adenosine Triphosphate
Where does glycolysis occur in the cell?
Cristae
Matrix
What is the net gain of ATP molecules produced directly through glycolysis from one molecule of glucose?
In glycolysis, glucose is converted into which molecule?
How many NADH molecules are produced during glycolysis for each molecule of glucose?
What is the primary purpose of glycolysis in cellular metabolism?
Which molecule serves as the initial substrate for glycolysis?
What is the total number of carbon atoms in one molecule of glucose before it enters glycolysis?
During the initial "investment" phase of glycolysis, two molecules of ATP are consumed to convert glucose into an intermediate compound. What is the purpose of this investment?
To prime/prepare the glucose molecule for subsequent steps of glycolysis
Where does pyruvate oxidation occur within a eukaryotic cell?
Pyruvate oxidation results in the conversion of pyruvate into which molecule?
During pyruvate oxidation, what molecule is released as a byproduct?
How many carbon atoms are present in one molecule of acetyl-CoA after pyruvate oxidation?
NADH and FADH2
carry energy/electrons to the ETC (Electron Transport Chain).
bind with Acetyl CoA.
make pyruvic acid
make water.
Where does the Krebs Cycle primarily take place within a eukaryotic cell?
Cristae
Mitochondrial matrix
What is the primary purpose of the Krebs Cycle in cellular respiration?
To produce glucose and ATP directly
To produce ATP, NADH, and FADH2 for the electron transport chain
To convert glucose into pyruvate
For each molecule of glucose, how many rounds of the Krebs Cycle are completed?
What is the final product of the Krebs Cycle that serves as the starting molecule for the next round of the cycle?
Acetyl-CoA
What gas is released as a byproduct of the Krebs Cycle?
What is the overall purpose of the Krebs Cycle in cellular respiration?
In which organelle of plant cells does photosynthesis primarily take place?
What is the primary function of the Calvin cycle in photosynthesis?
Which photosynthetic process occurs in the thylakoid membranes of chloroplasts and produces ATP and NADPH?
What is the overall chemical equation for photosynthesis?
During which stage of photosynthesis do plants capture light energy and convert it into chemical energy?
What is the primary function of the electron transport chain in cellular respiration?
To break down NADH
In the electron transport chain, what is the final electron acceptor?
What is the ultimate purpose of the electron transport chain in cellular respiration?
To establish a proton gradient for ATP syhnthesis
To generate heat energy
To convert NADH and FADH2 into glucose
During the Krebs Cycle, which molecules are reduced to generate NADH and FADH2?
