Which of the following is correct about human haemoglobin (Hb)?
Correct answer: D. All of these
- A. Made up of 2-α and 2-β chains.
- B. Present in RBC.
- C. Used to carry O₂ & CO₂.
- D. All of these
Explanation
The correct answer is Option D: 'All of these.' Human haemoglobin is a protein made up of two alpha and two beta polypeptide chains. It is located in red blood cells (RBCs) and serves the critical functions of transporting oxygen from the lungs to the body's tissues and carrying carbon dioxide back to the lungs for exhalation. Each statement in options A, B, and C is individually correct, which is why 'All of these' is the most comprehensive answer. Option A is correct in describing haemoglobin's structure, Option B correctly identifies its cellular location, and Option C accurately describes its function.
Last updated
About Biological Molecules
The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
Practise Biological Molecules
1,790 free Biological Molecules MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A common carbohydrate composed of glucose and fructose joined by a linkage between C-1 of glucose and C-2 of fructose is:
A complex aminoacid subunits is called?
A compound produced as a result of a chemical reaction of an alcohol with an acid, where a water molecule is released, is called:
A compound produced as a result of a chemical reaction of an alcohol with an acid in which water molecule is released is called_.
A dipeptide glycylalanine consists of: