Biology · Human Nutrition

Which of the following statements regarding the structural and functional roles of proteins and their deficiencies are correct? I. Proteins are body-building nutrients essential for the formation of enzymes, hormones, and antibodies. II. Muscle wasting, weakness, and swelling in the body due to fluid imbalance are consequences of protein deficiency. III. Marasmus is a severe protein deficiency disease primarily characterized by a swollen abdomen and poor growth. IV. A lack of protein leads to stunted growth and reduced immunity, making the body prone to frequent infections. Choose the most appropriate answer from the options given below: