Biology Semester 1 Review Quiz

What is the basic unit of life?

• Tissue

• Organ

• Cell

• Organism

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Which organelle is responsible for energy production in the cell?

• Nucleus

• Mitochondria

• Ribosome

• Golgi apparatus

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Explain how the structure of the cell membrane contributes to its function.

• It is rigid and impermeable, allowing only water to pass through.

• It is flexible and selectively permeable, allowing certain substances to enter and exit.

• It is thick and impermeable, preventing all substances from passing.

• It is thin and fully permeable, allowing all substances to pass freely.

Which of the following best describes the process of osmosis?

• Movement of solutes from high to low concentration

• Movement of water from low to high solute concentration

• Movement of water from high to low solute concentration

• Movement of solutes from low to high concentration

What is the role of DNA in heredity?

• It provides energy for cellular processes.

• It stores genetic information that is passed from parents to offspring.

• It transports nutrients throughout the cell.

• It acts as a structural component of the cell.

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Which of the following is an example of a homozygous genotype?

• Aa

• AB

• aa

• Ab

How does natural selection lead to evolution?

• By allowing all individuals to survive and reproduce equally.

• By favoring individuals with advantageous traits to survive and reproduce.

• By randomly changing the genetic makeup of a population.

• By ensuring that only the largest individuals survive.

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Describe the process of speciation.

• It occurs when two species merge into one.

• It occurs when a species becomes extinct.

• It occurs when a population becomes isolated and evolves into a new species.

• It occurs when a species migrates to a new habitat.

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Which of the following is the correct order of biological classification from broadest to most specific?

• Kingdom, Phylum, Class, Order, Family, Genus, Species

• Species, Genus, Family, Order, Class, Phylum, Kingdom

• Phylum, Kingdom, Class, Order, Family, Genus, Species

• Kingdom, Class, Phylum, Order, Family, Genus, Species

What is the significance of binomial nomenclature in biological classification?

• It provides a common name for each species.

• It gives each species a unique two-part scientific name.

• It classifies organisms based on their habitat.

• It groups organisms by their size.