Protein Quiz: Truths and Lies

Which of the following is incorrect?

• Proteins are made up of 20 different types of amino acids.

• Once a protein is formed, its shape remains fixed forever.

• Incorrect protein folding can cause diseases, like Alzheimer's.

• Proteins are essential for nearly all biological processes in the body.

Which of the following is incorrect?

• Enzymes speed up chemical reactions by lowering activation energy.

• Every enzyme can catalyze many different types of reactions.

• Amylase is an enzyme in your saliva that helps break down starch.

• Enzymes are reusable and aren’t consumed during reactions.

Which of the following is incorrect?

• Hemoglobin is a protein that transports oxygen in your blood.

• Antibodies are proteins that help protect your body from infections.

• Muscle contraction relies on the proteins actin and myosin.

• Proteins are only found inside the cells and never outside of them.

Which of the following is incorrect?

• DNA contains instructions for making every protein in your body.

• Ribosomes are the cellular machines that assemble proteins.

• Proteins can be made from scratch by your body without any external resources.

• Eating protein-rich foods provides your body with amino acids for building new proteins.

Which of the following is incorrect?

• Cooking meat or eggs can denature the proteins, changing their structure.

• Denatured proteins can never regain their original shape or function.

• Changes in pH levels can cause proteins to denature.

• Some proteins in extreme environments can survive heat or cold without denaturing.

Which of the following is incorrect?

• There are over 100,000 different types of proteins in the human body.

• Every protein in your body is made from a unique combination of the 20 amino acids.

• The primary structure of a protein refers to its three-dimensional shape.

• Some proteins can act as enzymes, transporters, or structural components.

Which of the following is incorrect?

• Insulin is a protein hormone that regulates blood sugar levels.

• Collagen, a structural protein, is the most abundant protein in the human body.

• Proteins are the only macromolecules in the body that store genetic information.

• Keratin, a protein, is what makes up your hair and nails.

Which of the following is incorrect?

• Denaturation can be caused by changes in temperature, pH, or exposure to chemicals.

• All proteins lose their function permanently once denatured.

• Some proteins need helper molecules called chaperones to fold properly.

• Denaturation can sometimes be reversible if normal conditions are restored.

Which of the following is incorrect?

• Eggs, meat, and beans are excellent sources of dietary proteins.

• Plant-based proteins like those in beans are always incomplete and can't support the body alone.

• Protein in food is broken down into amino acids during digestion.

• Your body uses these amino acids to rebuild proteins needed for growth and repair.

Which of the following is incorrect?

• Scientists use proteins like CRISPR-Cas9 to edit genes and modify DNA.

• Some vaccines are made using proteins from viruses to train the immune system.

• Protein-based enzymes can be used to cut and paste DNA in genetic engineering.

• Once a protein is used in biotechnology, it cannot be modified or repurposed.