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 cellular structure is responsible for forming peptide bonds between freely floating amino acids in the cytoplasm?

Mitochondrion

Ribosome

Golgi apparatus

Lysosome

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Verified step by step guidance

Understand the process of protein synthesis: Peptide bonds are formed during translation, which is the process of assembling amino acids into a polypeptide chain based on the sequence of a messenger RNA (mRNA).

Identify the cellular structure involved in translation: Translation occurs in the cytoplasm and is facilitated by ribosomes, which are responsible for reading the mRNA sequence and catalyzing the formation of peptide bonds between amino acids.

Clarify the role of ribosomes: Ribosomes consist of ribosomal RNA (rRNA) and proteins. They provide a platform where transfer RNA (tRNA) brings amino acids to the ribosome, and the ribosome catalyzes the formation of peptide bonds using enzymatic activity from its ribosomal subunits.

Eliminate incorrect options: Mitochondria are involved in energy production, Golgi apparatus is responsible for protein modification and sorting, and lysosomes are involved in degradation of cellular waste. None of these structures are directly involved in peptide bond formation.

Conclude that the ribosome is the correct answer: The ribosome is the cellular structure responsible for forming peptide bonds between freely floating amino acids in the cytoplasm during protein synthesis.