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

Proteins

Biochemistry

1. Introduction to Biochemistry

Proteins

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Multiple Choice

Which of the following molecules is a major structural and catalytic component of ribosomes, where amino acids are bonded together to form proteins?

Messenger RNA (mRNA)

Transfer RNA (tRNA)

Ribosomal RNA (rRNA)

Deoxyribonucleic acid (DNA)

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Verified step by step guidance

Understand the role of ribosomes in protein synthesis: Ribosomes are cellular structures responsible for translating messenger RNA (mRNA) into proteins by linking amino acids together in a specific sequence.

Identify the components of ribosomes: Ribosomes are composed of ribosomal RNA (rRNA) and proteins. rRNA plays both structural and catalytic roles in the ribosome.

Clarify the function of rRNA: Ribosomal RNA (rRNA) acts as a scaffold to maintain the structure of the ribosome and also catalyzes the formation of peptide bonds between amino acids during protein synthesis.

Differentiate between the options: Messenger RNA (mRNA) carries the genetic code from DNA to ribosomes, transfer RNA (tRNA) delivers amino acids to the ribosome, and DNA stores genetic information. None of these directly form the ribosome's structure or catalyze peptide bond formation like rRNA does.

Conclude that ribosomal RNA (rRNA) is the correct answer because it is the major structural and catalytic component of ribosomes, essential for protein synthesis.