🥜 Biologically Incomplete Protein

Let’s understand this in a very simple way.

What are proteins?
Proteins are nutrients needed for:

• Growth and development
• Tissue repair
• Muscle building
• Body functions

What is a complete protein?
A complete protein contains all the essential amino acids needed by the body.

Examples:

• Egg 🥚
• Milk 🥛
• Meat 🍖

What is an incomplete protein?
An incomplete protein lacks one or more essential amino acids.

👉 Most plant-based proteins are incomplete proteins.

Which of the following is a biologically incomplete protein?

✅ Correct Answer: (d) Nuts

Why nuts?
Nuts contain protein, but they do not provide all essential amino acids in adequate amounts.

👉 Therefore, they are considered biologically incomplete proteins.

Why other options are not correct?

• (a) Egg → ❌ Highest quality complete protein
• (b) Meat → ❌ Complete protein
• (c) Milk → ❌ Complete protein containing all essential amino acids

Important Nursing Point:
Combining plant proteins (such as cereals and pulses) can provide all essential amino acids and improve protein quality.

Simple Exam Trick:
Animal proteins = Usually complete ✔
Plant proteins = Often incomplete ✔
Nuts = Incomplete protein

📌 Disclaimer: For exam preparation only. Nutritional classification may vary slightly among textbooks.

💚 Exam Objective Nursing – Asha D
Concept clarity • Easy recall • Nursing success