MDCAT Biology

Biological Molecules Proteins MDCAT Quiz with Answers

Biological Molecules Proteins MDCAT Quiz: Proteins are such important macromolecules that play a vital role in the human body, especially for MDCAT students who are appearing for the Medical and Dental College Admission Test. Knowing the structure and function of proteins is imperative to excel in biology exams. In this article, we take up in detail the types of proteins, their functions, and how they contribute to various biological processes.

In MDCAT Quiz preparation, important knowledge of protein structure and function could be helpful in answering many tricky questions testing knowledge of biochemistry. Amino acids join to form a polypeptide chain via peptide bond linkages, which folds to give a three-dimensional shape. The shape of a protein directly relates to its function, whether it works as an enzyme, hormone, or structural component. H2: Protein Structure and Function

MDCAT Quiz on Proteins There are basically two main categories of proteins

globular and fibrous. Globular proteins, such as enzymes, act in catalyzing processes, while the main role of fibrous proteins is to provide structural support. Enzymes: one of the most studied types of proteins for MDCAT Quiz preparation. They act as catalysts to speed up chemical reactions within the body. The mechanism of enzymes, their substrate bindings, and active sites must be understood to solve questions related to metabolic pathways in the MDCAT exams.

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Free Flashcard on Proteins For effective MDCAT preparation

using a Free Flashcard can help reinforce the various protein functions and structures. These flashcards provide quick and easy access to important protein concepts such as amino acid sequences, denaturation, or protein synthesis. Going through each of these flashcards one by one regularly will increase your confidence in identifying a protein-related question and strengthen your chance of scoring high in your MDCAT exam. Protein Synthesis is another important topic that is covered regularly in MDCAT exams, and the understanding of how ribosomes translate information from genes to functional proteins is not only important but also vital.

What is the basic building block of proteins?

Amino acids

What type of bond links amino acids together in proteins?

Peptide bond

Which of the following is a carbohydrate?

Glucose

What is the primary function of carbohydrates in living organisms?

Provide energy

Which type of biological molecule is used for long-term energy storage in animals?

Lipids

What is the monomer of nucleic acids like DNA and RNA?

Nucleotide

What is the main function of nucleic acids in living organisms?

Store and transmit genetic information

What is the role of enzymes in biological reactions?

Speed up reactions

Which of the following is a monosaccharide?

Glucose

What is the primary structure of a protein determined by?

The sequence of amino acids

Which of the following is a type of lipid?

Phospholipid

What is the process called by which enzymes lower the activation energy of a reaction?

Catalysis

What is the primary function of proteins in living organisms?

Catalyze biochemical reactions

Which molecule is the main energy currency of cells?

ATP

What type of sugar is found in DNA?

Deoxyribose

What is the function of RNA in protein synthesis?

Carry genetic information

Which of the following is an example of a disaccharide?

Sucrose

What molecule is produced during the breakdown of glucose in glycolysis?

Pyruvate

What is the main component of cell membranes?

Phospholipids

What is the structure of a triglyceride?

Three fatty acids and one glycerol molecule

Which type of molecule is an enzyme?

Protein

What is the function of chlorophyll in photosynthesis?

Absorb light energy

What is the polymer form of glucose?

Starch

What is the building block of nucleic acids like DNA and RNA?

Nucleotides

Which molecule is primarily responsible for storing genetic information?

DNA

Which of the following molecules is a polysaccharide?

Starch

Which macromolecule contains nitrogen, carbon, hydrogen, and oxygen?

Protein

What is the function of lipids in the body?

Energy storage and insulation

What type of reaction breaks down polymers into monomers?

Hydrolysis

Which of the following is a feature of all proteins?

Contain nitrogen atoms

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