Electric Fields and Unity in Biology Quiz

Electric Fields

• An electric field around a positive point charge points radially outward in all directions.
• When the separation distance between two parallel plates increases, the electric field between them decreases.
• The formula to calculate electric field (E) is E = F/q, where F is the force experienced by a charge and q is the magnitude of the charge.

Biology

• The unifying concept in biology is the cell theory, which states that all living organisms are composed of cells, and all cells arise from pre-existing cells.
• Evolution explains the unity and diversity of life, showing how species adapt and change over time.
• Energy transformation allows organisms to move, grow, and reproduce, primarily through processes like metabolism.

Levels of Biological Organization

• Biologists can study life at multiple organizational levels, including molecules, cells, tissues, organs, organisms, populations, communities, ecosystems, and the biosphere.
• The primary tool used by biologists to make observations and form conclusions is the scientific method, which involves hypothesis testing, experimentation, and data analysis.