BIOMOLECULES-PROTEINS

A student conducted a Biuret test on different food samples. Which sample is most likely to show the most intense purple color?

• Mashed tomato

• Egg white

• Cooked rice

• Apple juice

A nutritionist is designing a diet plan for an athlete. Based on protein classification, which type of protein should be prioritized to aid in muscle repair and growth?

• Structural proteins

• Defensive proteins

• Transport proteins

• Storage proteins

If a person has a deficiency in enzymatic proteins, which of the following biological processes might be most affected?

• Oxygen transport in the blood

• Breakdown of food during digestion

• Storage of nutrients for future use

• Formation of antibodies against viruses
  
  

A scientist is studying how hemoglobin carries oxygen in the blood. Which classification of proteins does hemoglobin belong to?

• Structural proteins

• Transport proteins

• Enzymatic proteins

• Storage proteins

During an immune response, which type of protein plays a major role in defending the body against pathogens?

• Storage proteins 

• Defensive proteins

• Structural proteins

• Transport proteins

A student claims that all amino acids must come from the food we eat. How would you correct this misconception?

• Some amino acids are non-essential and can be synthesized by the body.

• The body cannot produce any amino acids, so all must come from diet.
  
  

• Only structural proteins contain amino acids.

• All proteins in the body are obtained from food.
  
  

Why do different food samples show varying intensities of purple in the Biuret test?

• The color intensity depends on the amount of peptide bonds present in the sample.
  

• The test reacts differently depending on the food's color.
  
  

• The presence of sugars affects the test result.

• The test only works on plant-based proteins.
  
  

Which of the following best explains why eggs are considered a good source of storage proteins?

• They help transport oxygen throughout the body.
  
  

• They store amino acids for the growth of a developing embryo.
  
  

• They provide enzymes that speed up digestion.
  
  

• They form structural support for bones and muscles.

How would a diet deficient in essential amino acids affect the body?

• The body would be unable to produce non-essential amino acids.
  
  

• Protein synthesis would be impaired, affecting growth and repair.
  
  

• Enzyme activity in digestion would increase significantly.
  
  

• The immune system would produce more antibodies.
  
  

Which of the following best explains why people with anemia often feel weak and tired?

• Their immune system is compromised due to a lack of defensive proteins.
  
  

• Their hemoglobin levels are low, reducing oxygen transport in the blood.
  
  

• They have too many storage proteins, which reduce energy production.
  
  

• Their body lacks structural proteins, weakening their muscles.