Front

What is the purpose of the STAAR Biology EOC practice test?

Back

To assess students' understanding of key biology concepts and prepare them for the STAAR Biology End-of-Course exam.

Front

Define 'cell theory'.

Back

Cell theory states that all living organisms are composed of cells, cells are the basic unit of life, and all cells arise from pre-existing cells.

Front

What is the function of mitochondria in a cell?

Back

Mitochondria are known as the powerhouse of the cell; they produce energy in the form of ATP through cellular respiration.

Front

Explain the process of photosynthesis.

Back

Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions in the body without being consumed in the process.

Front

Define 'genotype'.

Back

Genotype refers to the genetic makeup of an organism, specifically the alleles it possesses for a particular trait.

Front

What is the difference between a dominant and a recessive allele?

Back

A dominant allele expresses its trait even in the presence of a recessive allele, while a recessive allele only expresses its trait when two copies are present.

Front

What is natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

Define 'ecosystem'.

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An ecosystem is a community of living organisms interacting with their physical environment.

Front

What is the significance of the scientific method?

Back

The scientific method is a systematic approach to inquiry that helps scientists investigate phenomena, acquire new knowledge, or correct and integrate previous knowledge.