Biology STAAR Review

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What is primary succession?

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Primary succession is the ecological process that occurs in an area where no soil exists, such as after a volcanic eruption or glacier retreat, leading to the establishment of a biological community.

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What is the complementary DNA strand for AGGTCA during replication?

Back

The complementary DNA strand for AGGTCA is TCCAGT.

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What is an adaptation in biology?

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An adaptation is a change in an organism that enhances its ability to survive and reproduce in its environment.

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In which phase of the cell cycle does DNA replication occur?

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DNA replication occurs during the S phase of the cell cycle.

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What does heterozygous mean?

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Heterozygous refers to having two different alleles for a particular trait, often described as a hybrid.

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What is ecological succession?

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Ecological succession is the process by which ecosystems change and develop over time, involving a series of species replacements.

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What is secondary succession?

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Secondary succession is the process of ecological change that occurs in an area where a disturbance has destroyed an existing community but left the soil intact.

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What are pioneer species?

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Pioneer species are the first organisms to colonize previously disrupted or damaged ecosystems, initiating the process of ecological succession.

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What is the role of DNA in cells?

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DNA contains the genetic instructions for the development, functioning, growth, and reproduction of all known living organisms.

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What is the difference between genotype and phenotype?

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Genotype refers to the genetic makeup of an organism, while phenotype is the observable physical or biochemical characteristics of that organism.