Vanda Science Olympiad test

Front

What is gene expression?

Back

Gene expression is the process by which information from a gene is used to synthesize a functional gene product, often a protein. Environmental factors can influence gene expression, leading to variations in traits.

Front

What role do decomposers play in the ecosystem?

Back

Decomposers break down dead organic matter, returning nutrients, water, and carbon dioxide to the environment, which is essential for nutrient cycling.

Front

What are the main differences between plant and animal cells?

Back

Plant cells have a cell wall, chloroplasts for photosynthesis, and large vacuoles, while animal cells do not have these structures.

Front

What is the function of the cell membrane?

Back

The cell membrane controls the movement of substances in and out of the cell, maintaining homeostasis.

Front

What does it mean if organisms have similar structures?

Back

Similar structures in different organisms suggest that they may share a common evolutionary ancestor.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to synthesize foods with the help of chlorophyll, converting carbon dioxide and water into glucose and oxygen.

Front

What is the significance of nutrients in an ecosystem?

Back

Nutrients are essential for the growth and development of organisms and are recycled through processes like decomposition.

Front

How do plants and animals obtain energy?

Back

Plants obtain energy through photosynthesis, while animals obtain energy by consuming plants or other animals.

Front

What is the role of the nucleus in a cell?

Back

The nucleus is the control center of the cell, containing genetic material (DNA) and regulating cell activities.

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.