Mcat enzymes Study guides, Class notes & Summaries
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AAMC MCAT Practice Exam 1 Questions and Answers | Latest Version | 2024/2025 | 100% Verified
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AAMC MCAT Practice Exam 1 Questions 
and Answers | Latest Version | 2024/2025 
 
| 100% Verified 
 
What is the primary function of the mitochondria in a cell? 
 
- A) Protein synthesis 
- B) DNA replication 
 C) ATP production 
- D) Lipid metabolism 
 
Rationale: Mitochondria are known as the "powerhouses" of the cell because they produce ATP 
through oxidative phosphorylation, which provides energy for various cellular processes. 
 
Which of the following best describes the function of enzym...
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MCAT Bio/Biochem Questions and Answers | Latest Version | 2024/2025 | 100% Verified
- Exam (elaborations) • 65 pages • 2024
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MCAT Bio/Biochem Questions and 
Answers | Latest Version | 2024/2025 | 
 
100% Verified 
 
Explain the role of the sodium-potassium pump in maintaining resting membrane potential. 
 
The sodium-potassium pump actively transports three sodium ions out of the cell and two 
potassium ions into the cell, helping to maintain the resting membrane potential by creating an 
electrochemical gradient. 
 
Describe the process of oxidative phosphorylation in cellular respiration. 
 
Oxidative phosphorylatio...
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MCAT glycolysis questions with 100% correct answers
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MCAT glycolysisGlycolysis is the first step in cellular respiration, where sugars that are consumed are converted into fuels. It is when glucose is converted into ...... molecules of................... - correct answer 2 
pyruvate 
 
Here is a pic of the steps of glycolysis - correct answer 
 
List the enzymes that catalyze each step of glycolysis in order: - correct answer 1. hexokinase 
2. phosphoglucose isomerase 
3. phosphofructokinase-1 
4. aldolase 
5. trios phosphate isomerase 
6. gl...
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MCAT glycolysis questions with correct answers graded A+
- Exam (elaborations) • 5 pages • 2024
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MCAT glycolysisGlycolysis is the first step in cellular respiration, where sugars that are consumed are converted into fuels. It is when glucose is converted into ...... molecules of................... - correct answer 2 
pyruvate 
 
Here is a pic of the steps of glycolysis - correct answer 
 
List the enzymes that catalyze each step of glycolysis in order: - correct answer 1. hexokinase 
2. phosphoglucose isomerase 
3. phosphofructokinase-1 
4. aldolase 
5. trios phosphate isomerase 
6. gl...
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AAMC MCAT Exam 4 QUESTIONS AND ANSWERS RATED A+ 2023|2024
- Exam (elaborations) • 13 pages • 2023
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AAMC MCAT Exam 4 QUESTIONS AND ANSWERS 
RATED A+ 2023|2024 
Most cytochrome P450 enzymes alter the activity of drugs by: 
A. 
phosphorylating them. 
B. 
dephosphorylating them. 
C. 
oxidizing them. 
D. 
reducing them. - ANSWER C. 
oxidizing them. 
cytochrome p450 acts as monooxygenase, where an oxygen atom is inseted into 
substrate, thereby resulting in oxidation of substrate. 
Given that antibiotics like erythromycin are metabolized by estrogen-sensitive P450 
enzymes within the liver, which g...
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MCAT - Bio/Biochem Exam Practice Questions and Answers Graded A
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MCAT - Bio/Biochem Exam Practice 
Questions and Answers Graded A 
defunct mRNA translation in bacteria would... - Correct Answer ️️ -prevent cells from 
replicating. 
lysogenic cycle - Correct Answer ️️ -a viral reproductive cycle in which the viral DNA is 
added to the host cell's DNA and is copied along with the host cell's DNA 
Lytic phase or lytic cycle - Correct Answer ️️ -phage replicates immediately, destroying 
the host cell (All phages carry out this life cycle) 
protein p...
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AAMC MCAT Exam 4- Bio 2023
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AAMC MCAT Exam 4- Bio 2023 
 
 
Most cytochrome P450 enzymes alter the activity of drugs by: A. 
phosphorylating them. 
B. 
dephosphorylating them. C. 
oxidizing them. 
D. 
reducing them
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MCAT HEALTH CARE PRACTICE EXAM 2023-2024 QUESTIONS AND ANSWERS
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MCAT HEALTH CARE PRACTICE EXAM QUESTIONS AND ANSWERS 
In the chromatography of the reaction mixture, since water is absorbed in the cellulose functioned as the stationary phase. What is the principal factor determining the migration of individual components in the sample? 
a. Hydrogen bonding 
b. Solute concetration 
c. Stationary phase concetration 
d. Thickness of the paper 
Hydrogen bonding because the relative amount of hydrogen bonding to the stationary phase will determine the relative r...
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MCAT Biology Exam Questions With Verified And Updated Solutions.
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MCAT Biology Exam Questions With 
Verified And Updated Solutions. 
Cell Theory - answerFour Tenets: 
1. All living things are composed of cells 
2. The cell is the basic functional unit of life 
3. Cells arise only from preexisting cells 
4. Cells carry genetic information in the form of DNA 
Eukaryotic Cells - answerContain a true nucleus enclosed in a membrane. 
Prokaryotic Cells - answerDo not contain a nucleus. 
Organelles - answerSuspended in semifluid cytosol. In eukaryotic cells they are ...
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MCAT Practice Questions with correct answers
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MCAT Practice Questions 
Why are triacylglycerols used in the human body for energy storage? 
 
A) They are highly hydrated, and therefore can store lots of energy. 
B) They always have short fatty acid chains, for easy access by metabolic enzymes. 
C) The carbon atoms of the fatty acid chains are highly reduced, and therefore yield more energy upon oxidation. 
D) Polysaccharides, which would actually be a better energy storage form, would dissolve in the body. - correct answer C 
 
Triacylglyce...
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