Life Science Review #2

Front

What is an independent variable in an experiment?

Back

An independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a dependent variable in an experiment?

Back

A dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

What is a food chain?

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

Front

What is cooperation within a species?

Back

Cooperation within a species refers to behaviors that benefit the group or community, such as raising young together or hunting in packs.

Front

What is eutrophication?

Back

Eutrophication is the process by which a body of water becomes overly enriched with nutrients, leading to excessive growth of algae and depletion of oxygen.

Front

What are harmful algal blooms?

Back

Harmful algal blooms are rapid increases in the population of algae in water bodies, which can produce toxins harmful to aquatic life and humans.

Front

What is the cell cycle?

Back

The cell cycle is the series of phases that a cell goes through to divide and replicate, including interphase, mitosis, and cytokinesis.

Front

What happens during interphase?

Back

During interphase, the cell grows, replicates its DNA, and prepares for cell division.

Front

What occurs during metaphase of mitosis?

Back

During metaphase, the chromosomes align in the center of the cell, and spindle fibers attach to the centromeres.

Front

What is the role of spindle fibers during mitosis?

Back

Spindle fibers help separate the chromosomes during cell division by pulling them to opposite poles of the cell.