Biology

IXL offers dozens of Biology skills to explore and learn! Not sure where to start? Go to your personalized Recommendations wall to find a skill that looks interesting, or select a skill plan that aligns to your textbook, state standards, or standardized test.

IXL offers dozens of Biology skills to explore and learn! Not sure where to start? Go to your personalized Recommendations wall to find a skill that looks interesting, or select a skill plan that aligns to your textbook, state standards, or standardized test.

B. The chemistry of life

  1. 1
    Chemistry of water
  2. 2
    Properties of water: cohesion and adhesion

D. Cell structure

  1. •
    New! Cells and cell theory
  2. 1
    Identify functions of plant cell parts
  3. 2
    Identify functions of animal cell parts
  4. 3
    Plant cell diagrams: label parts
  5. 4
    Animal cell diagrams: label parts

E. Cellular transport

  1. 1
    Structure and function of the cell membrane
  2. 2
    Types of passive transport
  3. 3
    Osmosis

F. Multicellular organisms

  1. 1
    Organization in the human body: the heart and the circulatory system
  2. 2
    Homeostasis and feedback loops

G. Cell energy

  1. 1
    The chemistry of photosynthesis
  2. 2
    The chemistry of cellular respiration

H. Cell growth and division

  1. 1
    Introduction to cell division
  2. 2
    The cell cycle
  3. 3
    Describe phases of mitosis and the cell cycle
  4. 4
    Identify phases of mitosis and the cell cycle in plant cells

I. DNA

  1. 1
    Introduction to the genetic code

J. Protein synthesis

  1. 1
    Read a codon wheel
  2. 2
    Read a codon table
  3. 3
    Use a codon wheel to transcribe and translate DNA sequences
  4. 4
    Use a codon table to transcribe and translate DNA sequences

K. Meiosis and sexual reproduction

  1. 1
    Sexual reproduction and genetic variation: part I
  2. •
    New! Sexual reproduction and genetic variation: part II

M. Evolution

  1. 1
    Evaluate fossil evidence of evolution
  2. 2
    Evaluate anatomical and molecular evidence of evolution
  3. 3
    Construct explanations of natural selection

N. Classification

  1. 1
    Classify and describe organisms using domains

P. Biodiversity

  1. 1
    Kelp forests: factors affecting biodiversity