Topic Summaries
Antibiotics
Transport Systems
Blood and heart disease
Stem cells, microscopy, and microorganisms
Transport in cells
Human health and enzymes
Plant transport systems
Pathogens and non-specific immunity
The immune system and drugs
Plant disease and monoclonal antibodies
Photosynthesis and respiration
The nervous system and homeostasis
The brain and the eye
Hormone regulation and waste excretion
Reproductive hormones and plant hormones
Cell division, reproduction, and DNA structure
DNA synthesis and inheritance
Genetic engineering and modification
Evolution and natural selection
Species and classification
Resource cycles and environmental change
Biodiversity and environmental management
Biomass and trophic levels
Food supply and biotechnology
Science skills: Experimental procedures
Science skills: Presenting and using data
Science skills: Measuring results
Transport Systems
Blood and heart disease
Stem cells, microscopy, and microorganisms
Transport in cells
Human health and enzymes
Plant transport systems
Pathogens and non-specific immunity
The immune system and drugs
Plant disease and monoclonal antibodies
Photosynthesis and respiration
The nervous system and homeostasis
The brain and the eye
Hormone regulation and waste excretion
Reproductive hormones and plant hormones
Cell division, reproduction, and DNA structure
DNA synthesis and inheritance
Genetic engineering and modification
Evolution and natural selection
Species and classification
Resource cycles and environmental change
Biodiversity and environmental management
Biomass and trophic levels
Food supply and biotechnology
Science skills: Experimental procedures
Science skills: Presenting and using data
Science skills: Measuring results
- Antibiotics are medicines used to treat bacterial diseases. For example, penicillin is an antibiotic produced by a fungus, which kills bacteria by weakening their cell walls so they burst.
- Some antibiotics alter bacterial enzymes. Others stop bacteria from reproducing.
- Specific antibiotics are used to kill specific bacteria, and they cannot kill viruses.
- Antibiotics have greatly reduced deaths from bacterial diseases.
- Some strains of bacteria have evolved resistance to antibiotics.
- Over-prescription of antibiotics has contributed to the emergence of these resistant strains. Drug companies are constantly researching new antibiotics or alternatives for resistant strains.
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