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. •
    Coming soon: Chemistry of water

D. Cell structure

  1. 1
    Identify functions of plant cell parts
  2. 2
    Identify functions of animal cell parts
  3. 3
    Plant cell diagrams: label parts
  4. 4
    Animal cell diagrams: label parts

E. Cellular transport

  1. 1
    Structure and function of the cell membrane

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. •
    Coming soon: How do plants use and change energy?
  2. 1
    The chemistry of cellular respiration

H. Cell growth and division

  1. •
    New! Introduction to cell division
  2. 1
    Describe the phases of mitosis

I. DNA

  1. •
    Coming soon: 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. •
    Coming soon: How does sexual reproduction lead to genetic variation?

L. Patterns of inheritance

  1. 1
    Genetics vocabulary: genotype and phenotype
  2. 2
    Genetics vocabulary: dominant and recessive
  3. 3
    Punnett squares: Mendelian inheritance
  4. •
    New! Punnett squares: incomplete dominance and codominance

M. Evolution

  1. •
    Coming soon: Evidence of evolution
  2. •
    Coming soon: Construct explanations of natural selection

N. Ecology

  1. •
    Coming soon: Interpret food webs
  2. •
    Coming soon: How can group behavior affect survival? Identify evidence to support a claim

O. Biodiversity

  1. •
    Coming soon: Kelp forests: factors affecting biodiversity