Podcast
Questions and Answers
What is the significance of the 5' carbon in pentose sugar during DNA replication?
What is the significance of the 5' carbon in pentose sugar during DNA replication?
- It helps differentiate between ribose and deoxyribose.
- It is where the phosphate group attaches to the sugar. (correct)
- It signals the end of the DNA strand.
- It indicates where the nitrogenous base attaches.
Which structure characterizes RNA compared to DNA?
Which structure characterizes RNA compared to DNA?
- Double-stranded helical structure.
- Has the same sugar as DNA.
- Single strand of nucleotides. (correct)
- Contains thymine as a nitrogenous base.
In the context of DNA replication, what does semiconservative replication mean?
In the context of DNA replication, what does semiconservative replication mean?
- Both strands of the original DNA remain with each other.
- Each new DNA molecule contains one old strand and one newly synthesized strand. (correct)
- DNA is completely fragmented before replication.
- Only one new strand is formed from each original strand.
What informational role does RNA serve in the cell?
What informational role does RNA serve in the cell?
Which base pairing occurs between the nitrogenous bases in RNA?
Which base pairing occurs between the nitrogenous bases in RNA?
Which of the following biomolecules is primarily responsible for providing stored energy reserves?
Which of the following biomolecules is primarily responsible for providing stored energy reserves?
What type of reaction occurs when two monomers combine to form a dimer?
What type of reaction occurs when two monomers combine to form a dimer?
Which bond is formed between monosaccharides in carbohydrates?
Which bond is formed between monosaccharides in carbohydrates?
What is the role of proteins in the body?
What is the role of proteins in the body?
Which of the following statements about nucleic acids is true?
Which of the following statements about nucleic acids is true?
What is the primary structural component that constitutes proteins?
What is the primary structural component that constitutes proteins?
Which statement correctly differentiates lipids from the other biomolecules?
Which statement correctly differentiates lipids from the other biomolecules?
What process reverses a dehydration reaction to break down polymers?
What process reverses a dehydration reaction to break down polymers?
Which of the following statements about monosaccharides is NOT true?
Which of the following statements about monosaccharides is NOT true?
What distinguishes unsaturated lipids from saturated lipids?
What distinguishes unsaturated lipids from saturated lipids?
Which of the following best describes the structure of phospholipids?
Which of the following best describes the structure of phospholipids?
Which statement about the functions of carbohydrates is accurate?
Which statement about the functions of carbohydrates is accurate?
What is a key characteristic of saturated lipids?
What is a key characteristic of saturated lipids?
Which of the following is NOT a function of proteins?
Which of the following is NOT a function of proteins?
What is the building block of carbohydrates?
What is the building block of carbohydrates?
Which of the following biopolymers is formed by condensation reactions of monosaccharides?
Which of the following biopolymers is formed by condensation reactions of monosaccharides?
What defines the primary structure of a protein?
What defines the primary structure of a protein?
Which of the following correctly identifies a component of a nucleotide?
Which of the following correctly identifies a component of a nucleotide?
What distinguishes RNA from DNA at the second carbon of the sugar component?
What distinguishes RNA from DNA at the second carbon of the sugar component?
What is the significance of Chargaff's rules in DNA structure?
What is the significance of Chargaff's rules in DNA structure?
Which structure is associated with the tertiary level of protein folding?
Which structure is associated with the tertiary level of protein folding?
Which of the following correctly describes the pairing of nucleotides in DNA?
Which of the following correctly describes the pairing of nucleotides in DNA?
What element is NOT a component of nucleic acids?
What element is NOT a component of nucleic acids?
Which of the following is true regarding the structure of DNA proposed by Watson and Crick?
Which of the following is true regarding the structure of DNA proposed by Watson and Crick?
Flashcards
Biomolecules
Biomolecules
Molecules found naturally in living organisms, often obtained from food, and crucial for maintenance and metabolic processes.
Carbon
Carbon
The most versatile element in life's functions, found in all biomolecules.
Macromolecules
Macromolecules
Large molecules consisting of thousands of covalently linked atoms. Examples include carbohydrates, proteins, and nucleic acids.
Dehydration Reaction
Dehydration Reaction
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Hydrolysis
Hydrolysis
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Monomers
Monomers
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Polymerization
Polymerization
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Central Dogma
Central Dogma
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What are Carbohydrates?
What are Carbohydrates?
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What are Monosaccharides?
What are Monosaccharides?
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What are Polysaccharides?
What are Polysaccharides?
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What are Oligosaccharides?
What are Oligosaccharides?
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What are Lipids?
What are Lipids?
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What are Saturated Lipids?
What are Saturated Lipids?
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What are Unsaturated Lipids?
What are Unsaturated Lipids?
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What are Proteins?
What are Proteins?
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What are phosphodiester bonds?
What are phosphodiester bonds?
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What is Semiconservative Replication?
What is Semiconservative Replication?
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What is Transcription?
What is Transcription?
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What is the unique base pairing in RNA?
What is the unique base pairing in RNA?
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What is the difference in sugars in RNA and DNA?
What is the difference in sugars in RNA and DNA?
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Primary Structure of Proteins
Primary Structure of Proteins
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Secondary Structure of Proteins
Secondary Structure of Proteins
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Tertiary Structure of Proteins
Tertiary Structure of Proteins
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Quaternary Structure of Proteins
Quaternary Structure of Proteins
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Nucleotide
Nucleotide
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DNA Structure
DNA Structure
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Base Pairing Rules
Base Pairing Rules
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Chargaff's Rule
Chargaff's Rule
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Study Notes
Biomolecules and the Central Dogma of Life
- Biomolecules are naturally occurring molecules in organisms, including carbohydrates, lipids, proteins, and nucleic acids
- These molecules play roles in maintenance and metabolic processes.
- Biomolecules are usually obtained from food
- Carbon is the most versatile element, found in all biomolecules.
- Other elements include Hydrogen, Oxygen, Nitrogen, Sulfur, Sodium, Calcium, and Magnesium
- Atoms combine to form larger molecules: atoms --> molecules --> macromolecules
- Macromolecules are very large molecules made up of thousands of atoms connected covalently.
Functions of Biomolecules
- Carbohydrates are the body's main source of energy.
- Lipids provide stored energy reserves when carbohydrates are unavailable.
- Proteins help in building bones, muscles, and fight diseases.
- Nucleic acids are involved in storing and transmitting genetic information, controlling cell processes.
Breaking of Macromolecules
- Macromolecules can be broken down (hydrolyzed) to monomers (smaller units).
- Polymers are formed by joining monomers.
- Monomers, such as glucose, are building blocks for other larger molecules.
Types of Macromolecules
- Carbohydrates: Made of monosaccharides (e.g., glucose, fructose).
- Proteins: Made of amino acids (e.g., Alanine, glycine).
- Nucleic acids: Made of nucleotides (e.g., adenine, guanine).
- Lipids: Made of fatty acids.
Lipids
- Lipids are hydrophobic (water-repelling).
- Lipids are important for energy storage, cell structure (phospholipids), and hormones (steroids).
Proteins
- Proteins are polymers of amino acids.
- They have complex structures (primary, secondary, tertiary, and quaternary) which determine their function.
- Function as enzymes, hormones, structural components, and more.
Nucleic Acids (DNA and RNA)
- Nucleic acids are polymers of nucleotides.
- DNA stores genetic information.
- RNA plays roles in protein synthesis and other cellular processes.
- Nucleotides have a nitrogenous base, a pentose sugar (deoxyribose or ribose), and a phosphate group.
Central Dogma of Molecular Biology
- Information flows from DNA to RNA to protein.
- Transcription is the process of copying DNA into RNA.
- Translation is the process of decoding RNA into a protein.
- Replication is the process of making copies of DNA.
DNA Replication
- DNA replication is semi-conservative.
- Each new DNA molecule consists of one original strand and one newly synthesized strand.
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