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MCAT Biochemistry Questions

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Biochemistry Subjects To Study For The MCAT are:
Amino Acids, Peptides and Proteins
Biological Membranes
Carbohydrate metabolism
Carbohydrate structure
DNA and RNA
Enzymes
Lipids and lipid metabolism
Nonenzymatic proteins
Regulation of metabolism

MCAT Biochemistry Questions

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1. What is Cystine?

The name used to refer to the disulfide bond made between two cysteine's in a protein.A transmembrane protein is a protein that completely passes through the bilayer.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.

2. What are Selectins?

The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.The name used to refer to the disulfide bond made between two cysteine's in a protein.A transmembrane protein is a protein that completely passes through the bilayer.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.

3. What is the template strand?

A transmembrane protein is a protein that completely passes through the bilayer.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.The name used to refer to the disulfide bond made between two cysteine's in a protein.

4. What is a transmembrane protein?

A transmembrane protein is a protein that completely passes through the bilayer.The name used to refer to the disulfide bond made between two cysteine's in a protein.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.

5. What is a globular protein?

The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.The name used to refer to the disulfide bond made between two cysteine's in a protein.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.A protein that is spherical and round

6. What is Km

The name used to refer to the disulfide bond made between two cysteine's in a protein.Km (AKA the Michaelis Constant) is the concentration at which half of the enzyme's active sites are in use and the velocity of the reaction is half of the Vmax. Km can be used to compare the affinities of different enzymes for specific substrates. For example, an enzyme with a Km of .5M needs .5M of substrate to occupy half of its active sites. However, an enzyme with a Km of .25M only needs .25M of substrate to occupy half of its active sites.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.

7. How does ATP drive reactions forward?

The name used to refer to the disulfide bond made between two cysteine's in a protein.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.ATP provides heat in the form of energy released when its phosphate is cleaved. This free energy pushes nonfavorable reactions forwward.

8. What is the 8th step of Glycolysis?

The name used to refer to the disulfide bond made between two cysteine's in a protein.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.Mutase converts 2 3-Phosphoglycerates into 2 2-Phosphoglycerates.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.

9. What are common ways to denature a protein?

Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.1. Heat. As temp increases, hydrogen bonds and salt bridges destabilize. 2. Solutes such as urea and beta mercaptoethanol can disrupt disulfide bridges, causing denaturation. 3. Detergents can solubilize proteins, which disrupts noncovalent bonds and therefore promotes denaturation.The name used to refer to the disulfide bond made between two cysteine's in a protein.

10. What are the three types of RNA pol in eukaryotes?

The name used to refer to the disulfide bond made between two cysteine's in a protein.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.1. RNA pol 1 - Located in Nucleolus, synthesizes rRNA. 2. RNA pol 2 - Located in the nucleus, transcribes DNA and some small nuclear RNA. This is the transcription RNA pol. 3. RNA pol 3 - Located in the Nucleus, synthesizes tRNA and some rRNA.

11. What is a peptide?

A chain of amino acids.The name used to refer to the disulfide bond made between two cysteine's in a protein.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.

12. Biological systems are often considered [closed, open, or isolated systems?]

The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.Biological systems are often considered open Think about it! We definitely exchange energy with the environment and mass. We're losing and gaining weight all the time.The name used to refer to the disulfide bond made between two cysteine's in a protein.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.

13. Describe the inner mitochondrial membrane.

The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.The name used to refer to the disulfide bond made between two cysteine's in a protein.A selectively permeable membrane with cristae and important metabolic enzymes.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.

14. Describe the metabolic crossroad of Dihydroxyacetone Phosphate (DHAP)

Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.DHAP is usually just converted right into G3P, but in hepatic and adipose tissue DHAP can be converted into Glycerol-3-P which can be converted to Glycerol, the backbone of triacylglycerols.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.The name used to refer to the disulfide bond made between two cysteine's in a protein.

15. What are the main components of the ETC?

The name used to refer to the disulfide bond made between two cysteine's in a protein.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.1. Complex 1 (NADH-CoQ oxioreductase) 2. Complex 2 (Succinate-CoQ Oxioreductase) 3. Complex 3 (CoQH2 -cytochrome c Oxioreductase) 4. Complex 4 (Cytocrhome c Oxidase) 5. ATP Synthase (technically its own thing, but extremely closely linked to the ETC and often referred to as the 5th complex.)

16. What is the first step of Glycolysis?

The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.An ATP molecule is used by Hexokinase to phosphorlyate Glucose to Glucose-6-P.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The name used to refer to the disulfide bond made between two cysteine's in a protein.

17. What are terpenes?

A class of lipids built from isoprene units. They are produced mainly by plants and insects. They are generally strongly scented and they are precursors to steroids.The name used to refer to the disulfide bond made between two cysteine's in a protein.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.

18. What are the two most common isolation techniques for proteins?

The name used to refer to the disulfide bond made between two cysteine's in a protein.1. Electrophoresis 2. ChromatographyUnique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.

19. Describe the metabolic changes associated with the Postprandial state.

Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.This state is marked by greater anabolism than catabolism. It is also marked by increased blood sugar, which leads to an increase in insulin. Insulin leads to glycogen synthesis in the liver and muscle. Once gylcogen stores are filled, excess glucose is further converted into fatty acids and triacylglycerols in the liver. In the muscle, insulin stimulates the production of proteins from excess glucose.The name used to refer to the disulfide bond made between two cysteine's in a protein.

20. What are Elongation Factors?

The name used to refer to the disulfide bond made between two cysteine's in a protein.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.Proteins that speed up elongation by bringing in tRNAs and GTP. Elongation Factors also get rid of GDP (used up GTP) so that fresh GTP's can take their place.

21. What is the 7th step of Glycolysis?

Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.The name used to refer to the disulfide bond made between two cysteine's in a protein.Phosphoglycerate Kinase spends 2 ADPs to convert 2 1,3-Bisphoglycerates into 2 3-Phosphoglycerates and generate 2 ATP's.

22. Describe how DNA polymerase proof-reads bases.

The name used to refer to the disulfide bond made between two cysteine's in a protein.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.Part of the DNA polymerase enzme is specifically designed to proofread. When complementary strands have incorrectly paired bases the hydrogen bonds are unstable. The proofreading section of DNA polymerase detects the unstable hydrogen bond and removes the incorrect base.

23. What is the isoelectric point (pI)?

The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.The pH at which the amino acid is completely neutral as a result of all positive and negative charges balancing out.The name used to refer to the disulfide bond made between two cysteine's in a protein.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.

24. What is an antibody?

The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.Aka immunoglobulin, is a protein produced by B-cells that functions to neutralize immune system targets and then recruit other cells to help eliminate the threat.The name used to refer to the disulfide bond made between two cysteine's in a protein.

25. What is centrifugation?

The template strand (also called the antisense strand) is the DNA strand that is read by RNA pol to create the mRNA transcript. The bases of the mRNA Transcript will be antiparallel and complementary to the template strand.The process of applying centrifugal force to a solution by spinning it. Centrifugation causes solid particles in the solution to collect at the bottom of the solution.The name used to refer to the disulfide bond made between two cysteine's in a protein.Unique in that they bind to carbohydrate molecules that project from other cell surfaces. Selectin bonds are the weakest bonds found in Cell Adhesion Molecules. Selectins are expressed on white blood cells and endothelial cells. They play an important role in inflammation and white blood cell migration.

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25 Questions

❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know? Privacy | Terms |

Without work one finishes nothing. - Ralph Waldo Emerson© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.

About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know?
Privacy | Terms |

Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com