IB Biology Y1S1 Review

What is the role of water as a universal solvent in living organisms?

• It dissolves nutrients

• It provides energy

• It acts as a structural component

• It stores genetic information.

Contrast anaerobic and aerobic respiration: Which one requires oxygen?

• A) Anaerobic

• B) Aerobic

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Fill in the blank: The rate of cell respiration is affected by factors such as temperature, pH, and ________.

• Light

• Water

• Oxygen

• Nitrogen

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What is the main product of photosynthesis?

• Oxygen

• Glucose

• Carbon dioxide

• Water

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What are the components of a nucleotide?

• Sugar, phosphate, base

• Protein, lipid, carbohydrate

• Water, salt, mineral

• Acid, base, salt

Fill in the blank: The structure of DNA is described as a ________.

• Single helix

• Double helix

• Triple helix

• Quadruple helix

What is complementary base pairing in DNA?

• A) A-T and G-C

• B) A-G and T-C

• C) A-C and G-T

• D) A-A and G-G

Fill in the blank: The diversity of DNA base sequences contributes to the ________ of the genetic code.

• A) Stability

• B) Variability

• C) Uniformity

• D) Simplicity

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In what contexts are polymerase chain reaction (PCR) and gel electrophoresis valuable tools?

• Genetic studies

• Cooking

• Painting

• Music production

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State the cell theory.

• A) All living organisms are composed of cells, and all cells come from pre-existing cells.

• B) Cells are only found in plants.

• C) Cells can spontaneously generate.

• D) Cells are not the basic unit of life.