OnlineCBT Logo OnlineCBT
⚲
English
OnlineCBT Logo OnlineCBT
⚲

Biology · BIOMOLECULES

हिन्दी

Adult human haemoglobin (Hb) exhibits a quaternary protein architecture. Which of the following statements correctly describes its subunit composition?

  1. It consists of 2 identical polypeptide chains of \( \alpha \) type.
  2. It consists of 4 identical polypeptide subunits of \( \beta \) type.
  3. It consists of 4 subunits: two subunits of \( \alpha \) type and two subunits of \( \beta \) type.
  4. It consists of 3 subunits: two \( \alpha \) subunits and one \( \beta \) subunit.

Correct answer · Option 3

It consists of 4 subunits: two subunits of \( \alpha \) type and two subunits of \( \beta \) type.

Explanation

Adult human haemoglobin consists of 4 subunits, where two subunits of \( \alpha \) type and two subunits of \( \beta \) type together constitute the functional quaternary molecule.

Related questions

Based on the average cellular composition of living tissues, arrange the following components in descending order of their percentage of total cellular mass:\nI. Nucleic acids II. Carbohydrates III. Proteins IV. Lipids→Given below are two statements: Statement I: The ash remaining after completely burning a living tissue sample contains inorganic compounds such as sulphate and phosphate in addition to inorganic ions. Statement II: Elemental analysis gives the elemental composition of living tissues, whereas compound analysis gives an idea of organic and inorganic constituents. In the light of the above statements, choose the most appropriate answer from the options given below:→Which of the following carbohydrates is a polymer of fructose?→Consider the following statements about protein structure: (A) In a polypeptide chain, the first amino acid is designated as the C-terminal amino acid. (B) In proteins, only right-handed helices are observed in the secondary structure. (C) Collagen is the most abundant protein in the animal world. (D) RuBisCO is the most abundant protein in the entire biosphere. (E) All proteins are homopolymers composed of repeating units of a single amino acid. Choose the correct answer from the options given below:→
ऑनलाइन कंप्यूटर आधारित परीक्षा

हमारा मिशन है – "विद्यार्थियों को शिक्षित करना और उन्हें प्रतिस्पर्धी परीक्षाओं की तैयारी में उनकी पूर्ण क्षमता के साथ उत्कृष्टता प्राप्त करने में सहायता करना। साथ ही उनमें अच्छे संस्कारों का संचार करना और उनके व्यक्तित्व का विकास करना।"

उपयोगी लिंक
महत्वपूर्ण पेज
कोर्सेज और अभ्यास
संपर्क करें
पता

प्लॉट नं. 10, धोलीगुमटी, पंडितपुरा रोड, बंदीकुई, दौसा (राजस्थान) – 303313

संपर्क करें

+91 7877547686

 ई-मेल

onlinecbtportal@gmail.com

 हेल्पलाइन नंबर

+91 7877547686
साझा करें
डाउनलोड करने के लिए क्लिक करें
Get it on Google Play

ऐप डाउनलोड करने
के लिए Google Play पर
उपलब्ध है

उपयोग की शर्तें | गोपनीयता नीति | कुकी नीति | अस्वीकरण | संपादकीय नीति | तथ्य जांच | सुधार | DMCA | विज्ञापन विकल्प

Copyright © 2026 - OnlineCBT.in. All Rights Reserved.

WhatsApp Chat