Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

1. Introduction to Biochemistry

Nucleic Acids

Biochemistry

1. Introduction to Biochemistry

Nucleic Acids

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Multiple Choice

Which type of nucleic acid is known to function as a nonprotein enzyme, catalyzing specific biochemical reactions?

Transfer RNA (tRNA)

Ribosomal RNA (rRNA)

Ribozymes (RNA)

Deoxyribonucleic acid (DNA)

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Verified step by step guidance

Step 1: Understand the concept of ribozymes. Ribozymes are RNA molecules that act as nonprotein enzymes, meaning they can catalyze specific biochemical reactions without being proteins.

Step 2: Recognize that ribozymes are a subset of RNA molecules. They are distinct from other types of RNA, such as transfer RNA (tRNA) and ribosomal RNA (rRNA), which have structural or transport roles rather than catalytic functions.

Step 3: Recall examples of ribozymes, such as the self-splicing introns and the ribosome's peptidyl transferase activity, which demonstrate RNA's ability to catalyze reactions.

Step 4: Compare ribozymes to DNA. DNA primarily serves as a storage molecule for genetic information and does not have catalytic properties like ribozymes.

Step 5: Conclude that ribozymes are the correct answer to the question, as they are RNA molecules with enzymatic activity, unlike tRNA, rRNA, or DNA.