Biology Concepts and Processes Quiz

Which macromolecule is primarily responsible for storing genetic information in a cell?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

What is the primary function of enzymes in biochemical reactions?

• To provide energy for reactions

• To act as a structural component

• To speed up reactions by lowering activation energy

• To act as a reactant

Which environmental factor can denature an enzyme, affecting its activity?

• Light intensity

• Temperature

• Salinity

• Pressure

During photosynthesis, which molecule is produced as a byproduct?

• Carbon dioxide

• Oxygen

• Glucose

• Water

What is the main role of the cell membrane?

• To provide energy to the cell

• To regulate the movement of substances in and out of the cell

• To store genetic information

• To synthesize proteins

Which phase of the cell cycle involves the division of the cell's nucleus?

• Interphase

• Cytokinesis

• Mitosis

• G1 phase

In an ecosystem, what is the term for organisms that produce their own food using sunlight?

• Consumers

• Decomposers

• Producers

• Herbivores

Which of the following best describes a food web?

• A linear sequence of organisms through which nutrients and energy pass

• A complex network of interconnected food chains

• A diagram showing the energy flow in a single direction

• A pyramid showing the biomass at each trophic level

What is the role of DNA polymerase during DNA replication?

• To unwind the DNA double helix

• To synthesize new DNA strands by adding nucleotides

• To join Okazaki fragments

• To remove RNA primers

Which of the following is an example of a structural evidence supporting the theory of evolution?

• Fossil records

• Genetic mutations

• Homologous structures

• Natural selection