Definition of the following biological terminologies: (a) mRNA (b) tRNA (c) rRNA (d) siRNA (e) miRNA Introduction: Ribonucleic acid (RNA) is the nucleic acid found as genetic material in some viruses and bacteria. The RNA molecules are of varying types in organisms with each having a unique set of functions. Some are involved in the process of protein synthesis whereas other perform regulatory functions such as splicing and RNA silencing.

Question

The table provides the standard reduction potential, E', for relevant half-cell reactions. Half-reaction E'° (V) Oxaloacetate² + 2H+ + 2e malate²- -0.166 Pyruvate + 2H+ + 2e → lactate -0.185 Acetaldehyde + 2H+ + 2e¯ →→→ ethanol -0.197 NAD+ + H+ + 2e--> NADH -0.320 NADP+ + H+ + 2e →→ NADPH Acetoacetate + 2H+ + 2e¯ - -0.324 B-hydroxybutyrate -0.346 Which of the reactions listed would proceed in the direction shown, under standard conditions, in the presence of the appropriate enzymes? Malate + NAD+ oxaloacetate + NADH + H+ Malate + pyruvate oxaloacetate + lactate Pyruvate + NADH + H+ lactate + NAD+ Pyruvate + p-hydroxybutyrate lactate + acetoacetate Acetaldehyde + succinate ethanol + fumerate Acetoacetate + NADH + H+ → B-hydroxybutyrate + NAD+

Answer 1

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Chapter 1, Problem 9RQ

Summary Introduction

To review:

Definition of the following biological terminologies:

(a) mRNA

(b) tRNA

(c) rRNA

(d) siRNA

(e) miRNA

Introduction:

Ribonucleic acid (RNA) is the nucleic acid found as genetic material in some viruses and bacteria. The RNA molecules are of varying types in organisms with each having a unique set of functions. Some are involved in the process of protein synthesis whereas other perform regulatory functions such as splicing and RNA silencing.

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