Biology STAAR Review

Front

What is a prokaryotic cell?

Back

A prokaryotic cell is a type of cell that lacks a membrane-bound nucleus and organelles. Its genetic material is free-floating in the cytoplasm.

Front

What is the role of light sensors in plants?

Back

Light sensors in plants detect light direction and intensity, stimulating hormones that promote growth towards the light source.

Front

What is coral bleaching?

Back

Coral bleaching is the loss of symbiotic algae from coral, leading to a loss of color and energy sources, often caused by rising sea temperatures.

Front

How does coral bleaching affect marine ecosystems?

Back

Coral bleaching can lead to a decline in species that depend on coral for food and protection, disrupting the ecosystem's stability.

Front

What is an energy pyramid?

Back

An energy pyramid is a graphical representation of the energy flow in an ecosystem, showing the energy available at each trophic level.

Front

How much energy is typically available to secondary consumers in an energy pyramid?

Back

Typically, secondary consumers receive about 10% of the energy available to primary producers, often around 100 joules.

Front

What are biomolecules?

Back

Biomolecules are organic molecules that are essential for life, including carbohydrates, proteins, lipids, and nucleic acids.

Front

What is the function of carbohydrates in cells?

Back

Carbohydrates provide energy and serve as structural components in cells.

Front

What is the function of proteins in cells?

Back

Proteins perform a variety of functions including catalyzing biochemical reactions, providing structure, and facilitating communication.

Front

What is the function of lipids in cells?

Back

Lipids store energy, form cell membranes, and serve as signaling molecules.