Dr. Jordan Bilezikian Reviewed By: Dr. Jordan Bilezikian
Authored By: Dave Evangelisti
MCAT Practice Tests

Test-Guide is supported by our users. We may earn a commission when you buy through some links on the site. Learn more.


Prepare for the Medical College Admission Test (MCAT) with a MCAT practice test. We have 8+ free MCAT practice tests to choose from.

In addition to our MCAT practice questions, we have also included a list of other companies who provide a MCAT diagnostic test. Find a resource that works for you and begin practicing for your MCAT below.

Summary: Use one of our many MCAT practice test resources below to prepare. For more help, consider one of the best rated MCAT prep courses.

As stated above, we have provided you with 2 options for practicing for the MCAT. The first option is to use our free MCAT practice tests. We have 8+ practice tests with the MCAT questions broken down by the section you will find them on the MCAT.

All of our MCAT practice questions are automatically scored and include answer explanations to help you better understand the material and why an answer was right or wrong.

The second option is to use the MCAT sample questions from one of the other providers we have listed below. Some of these providers include MCAT diagnostic tests for no extra charge.

We encourage you to review both options and see which MCAT practice test better fits your needs.


Our Recommended Prep Providers

  1. Princeton Review - Test-Guide Recommended
  2. Blueprint - Test-Guide Recommended

See Our Reviews & Rankings of Top MCAT Prep Courses.


If you reviewed our MCAT example questions above and are looking for more MCAT practice, check out some of these other providers and options below.

These providers offer different MCAT diagnostic tests to help you better pinpoint what you should be studying.

Resource Notes Provider
Princeton Review MCAT Diagnostic Test Take a MCAT diagnostic test. Full-length exam with MCAT sample questions. Princeton Review
Blueprint MCAT Diagnostic Tests Take a ½ length MCAT diagnostic test. Also take a full-length MCAT practice test. Blueprint
Magoosh MCAT Diagnostic Test Use their MCAT practice questions to prepare for the exam. Magoosh
Altius MCAT Diagnostic Exam Use their MCAT practice questions to prepare for the exam. Altius

In order to provide you with a better understanding of MCAT practice questions, we have provided you with a quick overview of some MCAT example questions. We have provided some examples from different sections that are tested on the MCAT.

MCAT Practice Question #1

Category: Biological and Biochemical Foundations

Question: A scientist using mouse models to determine the response of blood hormones to large levels of glucose in the body discovers a new hormone not previously described. 

According to his data, this hormone is found both inside and out of cells when carrying out its function, increase the amount of nucleic acid in the cell while functioning, and are derived from a structure containing four hydroxycarbon rings. 

This will likely be categorized as which type of hormone?

  1. Enzymatic
  2. Steroid
  3. Peptide
  4. Amino Acid

Answer: B. Steroid hormones, derived from cholesterol, act on intracellular receptors and produce mRNA specific to the outcome they produce. Thus, they are found both inside and out of the cell. 

Peptide hormones, such as insulin, act on outer membrane receptors, but are polarized, so they cannot enter the cell. Amino acid hormones can have the ability to enter the cell, but are usually made up of very small combinations of amino acids, and never of cholesterol, a four hydroxycarbon ring.

MCAT Practice Question #2

Category: Chemical and Physical Foundations

Question: One of the many reasons that the eukaryotic cell can possess so much information in its DNA is the ability to condense coding regions when they are not being expressed. When acting on DNA, which of the following processes will usually lead to a decrease in gene expression?

  1. Increased histone acetyltransferase activity
  2. Decrease in histone deacetyltransferase activity
  3. Increase in methylation activity
  4. Increase in heterochromatin:euchromatin ratio

Answer: C. This is a straightforward question that assesses knowledge of modification of DNA segments. Although in the real world these methods are not exclusive to increasing or decreasing activity, for MCAT testing purposes, histone acetyltransferase (HAT) frees DNA from histone proteins for expression.

Histone deacetyltransferase (HDAC) binds DNA more tightly to histone, creating more heterochromatin, which is not expressed. Methylation is an epigenetic modification that generally trends toward silencing gene expression.

MCAT Practice Question #3

Category: Psychological, Social, and Biological Foundations

Question: A patient comes into the ER looking extremely agitated. They are acting aggressive, and claiming they need medication or “bad things will happen”. What is the likely state of this patient’s dopamine system?

  1. There is decreased dopamine in the synaptic cleft.
  2. There are decreased dopamine receptors on the post-synaptic membrane.
  3. There is cell death in the areas with high dopamine cells.
  4. There is seizure-like activity in the dopamine brain areas.

Answer: B. This question comes off much like a biology question, but is actually a first-level derivative of a psychology/behavior question testing the concept of tolerance. Long-time stimulant drug users have excessive amounts of dopamine in the synaptic cleft due to inhibition of re-uptake.

Because of this, the body responds by decreasing the amount of available receptors. This leads to tolerance, or the individual needing more drug to maintain the same level of physiological response. A person in withdrawal likely has a high tolerance built up over an extended period of drug use.

There are plenty of MCAT practice test options available for students. However, not all MCAT practice is created equally. All of the MCAT test questions and diagnostic tests listed above are great resources to start out with.

Since there are 4 sections on the MCAT, it is important to make sure your MCAT practice test includes questions that cover all 4 sections. Within those 4 sections, there are also various topics that you should ensure you are tested on.

The best MCAT practice tests will include MCAT sample questions on all topics. You can review those topics below to ensure your practice exam includes them.

Biological and Biochemical Foundations Chemical and Physical Foundations Psychological, Social, and Biological Foundations Critical Analysis and Reasoning
Biochemistry Biochemistry Biology Comprehension Foundations
Biology Biology Psychology Text Reasoning
General Chemistry General Chemistry Sociology Reasoning Beyond the Test
Organic Chemistry Organic Chemistry    
  Physics    

Information about the MCAT

(click on image to enlarge)

The MCAT is generally considered a very difficult exam. There are numerous subjects tested on this exam and MCAT test questions tend to make you think more than other standardized exams like the SAT or ACT.

The timing aspect of this exam also makes this exam more challenging. In total, you will have 2 hours and 55 minutes to complete the 215 MCAT questions. Students should ensure they have taken numerous MCAT practice tests to get acclimated with the timing before taking the actual exam.

You can read our complete guide on how hard is the MCAT for more information.

The number of MCAT practice tests you take should depend on how you are progressing through your studies. However, many students may end up taking between 4 and 6 full-length MCAT practice tests when it is all said and done.

Many students may follow a similar path to the following:

  1. Practice Test #1 – This should be your “diagnostic test.” This should be taken before any studying is done. This will help you get a gauge of where you are at. This will help you track your progress.
  2. Practice Test #2 – This should be taken about 25% through your studies.
  3. Practice Test #3 – This should be taken about 50% through your studies.
  4. Practice Test #4 – This should be taken about 75% through your studies.
  5. Practice Test #5 – This should be taken when you finish your studies.
  6. More Practice Tests – These should be taken until you are comfortable with the material and the timing aspect of the exam.

You can read our full reviews of the best MCAT prep books, but here are some of our favorites.

Resource Notes Provider
Kaplan Complete Subject Review Our pick for most comprehensive. Kaplan
Princeton Review Complete Box Set Our pick for best value. Princeton Review
Kaplan's MCAT 528 Advanced Prep Our pick for best for practice questions. Kaplan
Mometrix's MCAT Prep Book Our pick for best for visual learners. Mometrix
Test Prep Books' MCAT Prep Books Our pick for most concise. Test Prep Books

Is the MCAT all multiple choice?

The MCAT utilizes a multiple-choice, computer-based format for its test takers. It is designed to test applicants’ knowledge in Organic Chemistry, General Chemistry, Biochemistry, General Biology, Psychology, Physics, and Sociology.

Can you use a calculator on the MCAT?

Test takers may not use a calculator on the MCAT. All calculations are expected to be done by hand. It is best to not use a calculator when taking free MCAT practice exams.

How many practice tests should I take for MCAT?

You should take at least 3 MCAT practice tests before taking the actual exam. The first one should be your MCAT diagnostic test. This should give you a better idea of what you know and what you need to focus on.

The second practice exam should be halfway through your studies. You should see some progression from your diagnostic exam. Continue to focus on the topics you struggle on.

The final MCAT practice exam should be once you feel you have completed your studies and are getting close to the actual test day. If you are still uncomfortable after taking this exam, keep studying and take more practice exams.

How many times can you take the MCAT?

You are able to take the MCAT 7 times in your lifespan. You can take the exam up to 3 times during a single testing year and 4 times during a two-consecutive year period.

Are there free MCAT practice exams?

Yes, there are free MCAT practice exams. We offer 8+ exams with sample MCAT questions. We have also listed other providers who offer MCAT practice tests for free. There are other options out there but these are the best MCAT practice exams.

How do I practice MCAT exam?

The best way to practice for the MCAT is to find a free resource to begin with. Free MCAT resources will allow you to better understand what you need to focus on.

It is always nice to better understand what you need to focus on before purchasing something – especially for the MCAT as many of these resources are very expensive.

Test-Guide

About Test-Guide

Test-Guide.com was founded by a group of educators with a passion for preparing students to succeed on their exams. [Learn More]

Follow us