SUMMATIVE TEST IN BIOCHEMISTRY

Which of the following is a function of peptides in the human body?

• Regulating blood glucose levels by breaking down starches.

• Facilitating the transport of ions across cell membranes.

• Acting as hormones or neurotransmitters to regulate various physiological processes.

• Serving as a storage form of genetic information.

What is a common physiological role of dipeptides and tripeptides in the digestive system?

• They function as antibodies in the immune response.

• They facilitate the absorption of amino acids across the intestinal epithelium.

• They are involved in the breakdown of fats into fatty acids and glycerol.

• They act as energy sources for the brain and muscles.

Which of the following peptides is composed of β-alanine and histidine?   

• Carnosine

• Aspartame

• Glutathione

• Thyrotropin Releasing Hormone (TRH)

Alex is a professional athlete who has recently started experiencing muscle fatigue and difficulty concentrating during training sessions. He has also noticed that his mood has been fluctuating more than usual. Concerned about these issues, Alex decides to consult a nutritionist for advice on how to adjust his diet to support his athletic performance and overall well-being. Based on Alex’s symptoms and needs, which of the following essential amino acids would be most beneficial for him to focus on to address muscle repair, energy production, and mood regulation?

• Histidine

• Isoleucine

• Phenylalanine

• Tryptophan

Maria is a vegetarian who has been experiencing digestive issues and reduced immune function lately. She has been advised to pay more attention to certain essential amino acids in her diet to improve her gut health and support her immune system. Which essential amino acid should Maria focus on to support her immune function and gut health?

• Leucine

• Threonine

• Phenylalanine

• Isoleucine

Which essential amino acid is crucial for synthesizing neurotransmitters that regulate mood and is also a precursor to serotonin?

• Leucine

• Methionine

• Tryptophan

• Phenylalanine

Which essential amino acid is known to act as a precursor to tyrosine, which is involved in producing neurotransmitters like dopamine?

• Phenylalanine

• Valine

• Methionine

• Cysteine

Which essential amino acid is critical for collagen synthesis and also plays a role in detoxification as a component of glutathione?

• Alanine

• Glycine

• Cysteine

• Glutamic Acid

Jamie, a professional athlete, is struggling with muscle recovery and immune system support following intense training sessions. Her coach suggests focusing on amino acids that play a significant role in energy production and immune function. Which amino acid should Jamie prioritize to help with energy production and immune system support?

• Asparagine

• Glutamine

• Aspartic Acid

• Arginine

Sara is a biochemistry student studying the functions of amino acids. She is particularly interested in how amino acids contribute to brain function and the synthesis of other amino acids. Which amino acid should Sara focus on for its role in supporting brain function and assisting in the synthesis of other amino acids?

• Aspartic Acid

• Glutamic Acid

• Tyrosine

• Cysteine