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WorksheetsAP Biology Exam Review | Unit 1 - Chemistry of Life
Total questions: 15
Worksheet time: 45mins
How do the nitrogenous bases differ between DNA and RNA?
DNA contains adenine, while RNA contains thymine.
DNA contains uracil, while RNA contains cytosine.
DNA contains thymine, while RNA contains uracil.
DNA contains guanine, while RNA contains adenine.
Which macromolecule contains phosphate?
Carbohydrate
Protein
Nucleic Acid
Lipid
What is the structure of DNA?
A single strand of amino acids.
A double helix composed of two strands of nucleotides.
A triple helix of ribonucleic acid.
A linear chain of nucleotides.
Which nitrogenous base pairs with adenine in DNA?
Cytosine
Guanine
Thymine
Uracil
What is the significance of the sequence of nucleotides in DNA?
It determines the genetic information and instructions for building proteins.
It regulates the temperature of the cell.
It provides energy for cellular processes.
It acts as a barrier against pathogens.
What type of bond is broken when amino acids are released?
Ionic Bond
Hydrogen Bond
Peptide Bond
Disulfide Bond
What is formed when nucleotides undergo dehydration?
Nucleic Acid
Protein
Carbohydrate
Lipid
What is the primary function of nucleic acids?
To store and transmit genetic information.
To provide energy for cellular processes.
To act as catalysts in biochemical reactions.
To form structural components of cells.
What is a peptide bond?
A type of ionic bond between amino acids.
A covalent bond formed between two amino acids.
A hydrogen bond that stabilizes protein structure.
A bond that occurs between nucleotides in DNA.
What is the difference between saturated and unsaturated fats?
Saturated fats have no double bonds between carbon atoms, while unsaturated fats have one or more double bonds.
Saturated fats are liquid at room temperature, while unsaturated fats are solid.
Saturated fats contain more calories than unsaturated fats.
Saturated fats are healthier than unsaturated fats.
What are the four main types of macromolecules?
Carbohydrates, Proteins, Lipids, Nucleic Acids
Vitamins, Minerals, Water, Fiber
Sugars, Starches, Fats, Oils
Enzymes, Hormones, Antibodies, Nucleotides
What is the function of carbohydrates in living organisms?
To provide energy and structural support.
To store genetic information.
To act as enzymes in metabolic reactions.
To transport oxygen in the blood.
What is the difference between DNA and RNA?
DNA is single-stranded and contains uracil, while RNA is double-stranded and contains thymine.
DNA is double-stranded and contains thymine, while RNA is single-stranded and contains uracil.
DNA and RNA are both double-stranded and contain thymine.
DNA is single-stranded and contains thymine, while RNA is double-stranded and contains uracil.
What is the role of enzymes in biological reactions?
To act as catalysts that speed up chemical reactions.
To slow down chemical reactions.
To provide energy for chemical reactions.
To change the pH of the reaction environment.
What are the building blocks of proteins?
Nucleotides
Fatty acids
Amino acids
Monosaccharides
