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Questions and Answers
What property of water allows it to sustain the weight of a needle on its surface?
What property of water allows it to sustain the weight of a needle on its surface?
- Adhesion
- Buoyancy
- Cohesion (correct)
- Viscosity
Which process allows water molecules to be pulled upward from the leaves during evaporation?
Which process allows water molecules to be pulled upward from the leaves during evaporation?
- Filtration
- Osmosis
- Diffusion
- Transpiration (correct)
What is the primary structural function of cellulose in plants?
What is the primary structural function of cellulose in plants?
- Energy storage
- Protective coating
- Facilitating chemical reactions
- Structural support and rigidity (correct)
What is the main characteristic that allows water to be a good solvent?
What is the main characteristic that allows water to be a good solvent?
How does adhesion affect the movement of water in a glass tube?
How does adhesion affect the movement of water in a glass tube?
Which statement accurately describes the nature of lipids?
Which statement accurately describes the nature of lipids?
What phenomenon causes a needle to float on the surface of water despite being denser than water?
What phenomenon causes a needle to float on the surface of water despite being denser than water?
What is the structure of steroids?
What is the structure of steroids?
What does the phrase 'like dissolves like' mean in terms of solubility?
What does the phrase 'like dissolves like' mean in terms of solubility?
What role do enzymes play within cells?
What role do enzymes play within cells?
Which of the following best describes surface tension?
Which of the following best describes surface tension?
How are triacylglycerols formed?
How are triacylglycerols formed?
What is the primary cause of adhesion between water molecules and glass?
What is the primary cause of adhesion between water molecules and glass?
What type of reaction is represented by the release of a monomer used to build a new polymer?
What type of reaction is represented by the release of a monomer used to build a new polymer?
Which enzyme is responsible for breaking down maltose?
Which enzyme is responsible for breaking down maltose?
What is the general formula for carbohydrates?
What is the general formula for carbohydrates?
Which type of carbohydrate is formed when two monosaccharides join together?
Which type of carbohydrate is formed when two monosaccharides join together?
What is the primary function of carbohydrates in organisms?
What is the primary function of carbohydrates in organisms?
Which of the following accurately describes glycogen?
Which of the following accurately describes glycogen?
How do alpha and beta glucose differ structurally?
How do alpha and beta glucose differ structurally?
What type of bond links monosaccharides in polysaccharides?
What type of bond links monosaccharides in polysaccharides?
What is osmosis primarily concerned with?
What is osmosis primarily concerned with?
Which factor does NOT affect the rate of diffusion?
Which factor does NOT affect the rate of diffusion?
What is the role of carbon in biological macromolecules?
What is the role of carbon in biological macromolecules?
What are condensation reactions involved in?
What are condensation reactions involved in?
What happens during a hydrolysis reaction?
What happens during a hydrolysis reaction?
What characteristic of water contributes to its high specific heat capacity?
What characteristic of water contributes to its high specific heat capacity?
Which statement about glucose is true?
Which statement about glucose is true?
Which would diffuse more quickly in a liquid?
Which would diffuse more quickly in a liquid?
Which of the following best describes the properties of water?
Which of the following best describes the properties of water?
What defines the neutral pH of water?
What defines the neutral pH of water?
What are the components of a nucleotide?
What are the components of a nucleotide?
Which statement accurately describes ribose and deoxyribose?
Which statement accurately describes ribose and deoxyribose?
Which statement is false regarding the structure of nucleotides?
Which statement is false regarding the structure of nucleotides?
What role does helicase play in DNA replication?
What role does helicase play in DNA replication?
What distinguishes ribose from deoxyribose at the molecular level?
What distinguishes ribose from deoxyribose at the molecular level?
Which of the following accurately describes sugars in nucleotides?
Which of the following accurately describes sugars in nucleotides?
What are the implications of errors in nucleotide assembly?
What are the implications of errors in nucleotide assembly?
Which molecule is specifically absent from the structure of RNA?
Which molecule is specifically absent from the structure of RNA?
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Study Notes
DNA Replication
- Helicase is an enzyme that separates the double helix of DNA into two separate strands.
- This is done by breaking the hydrogen bonds between the nitrogenous bases of the two strands.
- This allows each strand to act as a template for the synthesis of a new complementary strand.
- The new strands are synthesized by another enzyme called DNA polymerase.
- DNA polymerase adds nucleotides to the new strand in a 5' to 3' direction.
- Each new strand is identical to the original strand, except that one strand is the original parental strand and the other is a newly synthesized strand.
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