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General Biology Key Concepts

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  • Laboratory safety

    Laboratory safety involves following protocols to prevent accidents and ensure a safe working environment.

  • Metric conversions

    Metric conversions involve changing units within the metric system, such as converting milliliters to liters or grams to kilograms.

  • Use of pipettes

    Pipettes are tools used to measure and transfer precise volumes of liquids in the lab.

  • Microscope function

    A microscope magnifies small objects, allowing observation of cells and their structures.

  • Cell structure observation

    Microscopes enable viewing of cell structures such as the nucleus, cytoplasm, and membrane.

  • Diffusion

    Diffusion is the passive movement of molecules from an area of higher concentration to lower concentration.

  • Osmosis

    Osmosis is the diffusion of water across a selectively permeable membrane.

  • Tonicity

    Tonicity describes the relative concentration of solutes outside a cell affecting water movement.

  • Scientific method steps

    The scientific method includes observation, hypothesis, experimentation, analysis, and conclusion.

  • Graphing data

    Graphing visually represents data to identify trends and relationships.

  • Spectrophotometer use

    A spectrophotometer measures light absorbance to analyze concentrations of substances.

  • Enzyme function

    Enzymes are biological catalysts that speed up chemical reactions without being consumed.

  • Cellular respiration purpose

    Cellular respiration converts glucose and oxygen into ATP, the cell's energy currency.

  • Fermentation process

    Fermentation is an anaerobic process that produces energy and byproducts like lactic acid or alcohol.

  • Difference between aerobic and anaerobic respiration

    Aerobic respiration requires oxygen; anaerobic respiration does not and produces less ATP.

  • Role of enzymes in metabolism

    Enzymes lower activation energy, enabling metabolic reactions to occur efficiently.

  • Importance of metric system in biology

    The metric system provides a standardized way to measure and communicate biological data.

  • Principle of tonicity effects on cells

    Tonicity affects cell volume by causing water to move in or out, leading to swelling or shrinking.

  • How spectrophotometers relate to enzyme activity

    Spectrophotometers measure changes in absorbance to track enzyme activity over time.

  • Key components of a microscope

    Key parts include the eyepiece, objective lenses, stage, and light source.