Question

Which of the following statements are correct?(A) DNA microarray is a collection of DNA sequences immobilized on a solid surface that can be probed by hybridization.
(B) Differential centrifugation describes the separation of cell organelles by different rates of sedimentation.
(C) Amino acids that cannot be synthesized by humans but are synthesized by microbes are called essential amino acids.
(D) Equilibrium constant is specific for each chemical reaction.
Choose the correct answer from the options given below:

• A. (A), (B), and (C) only
• B. (A), (B) and (D) only
• C. (A), (C), and (D) only
• D. (B), (C), (D) only

Hint:

Remember, essential amino acids are ”essential” in diet as humans cannot synthesize them, but microbes can.

Answer 1

The Correct Option is A

- (A) Correct: DNA microarrays are used to probe immobilized DNA sequences via hybridization to study gene expression.
- (B) Correct: Differential centrifugation separates cellular organelles based on sedimentation rates.
- (C) Correct: Essential amino acids are not synthesized by humans but can be synthesized by microbes and are obtained through diet.
- (D) Incorrect: Equilibrium constants are specific for each reaction, but this statement does not align with the context provided.