Human blood is slightly alkaline with pH 7.4 and it does not change significantly with the addition of a small amount of an acid or a base because:
Correct answer: A. Serum proteins present in the blood act as buffer
- A. Serum proteins present in the blood act as buffer
- B. Na-K channels maintain the flow of hydrogen ions
- C. Hb acts as a buffer and also helps in its coagulation
- D. It is neutral
Explanation
Human blood contains several buffer systems to resist pH changes. The primary buffer system in the blood plasma (serum) is the carbonic acid-bicarbonate system (H2CO3/HCO3−), along with phosphate buffers and serum proteins like albumin.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Macromolecules
Proteins are classified by shape, composition and structure, from primary amino acid sequence to secondary, tertiary and quaternary organisation, and their biological roles are linked to this structure. Enzymes are examined as protein biocatalysts, including active sites, substrate specificity, activation energy, cofactors and factors affecting activity.
Practise Macromolecules
299 free Macromolecules MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Macromolecules questions
An average adult human body has approximately 4.7 to 5.5 liters of blood with a pH of _.
Identify the reaction in which alcohol is formed by the breakdown of sucrose in presence of an enzyme zymase:
Fe+2 is a cofactor of:
The CO-Hb bond is:
Match the vitamin deficiency disease in List I with the vitamin in List II. List I: (I) Scurvy, (II) Night Blindness, (III) Infertility, (IV) Beriberi, List II: (A) Thiamin, (B) Tocopherol, (C) Ascorbic Acid, (D) Retinol
The vitamin that assists in blood clotting is: