Bacteria and Viruses
Bacteria are prokaryotes, meaning that their DNA is in the cytoplasm because they do not have a nucleus. In addition to not having a nucleus, bacteria also do not have many of the other structures that are found in a eukaryotic cell. However, they still meet the criteria for being a living organism. There are three different shapes of bacteria: spiral, rod, and spherical shaped. Read More...
◂Science Worksheets and Study Guides Seventh Grade. Bacteria and Viruses
Study Guide
Bacteria and Viruses 
Activity Lesson
Microlife - Bacteria, Protists & Fungi Worksheet/Answer key
Bacteria and Viruses Worksheet/Answer key
Bacteria and Viruses Worksheet/Answer key
Bacteria and Viruses Worksheet/Answer key
Bacteria and Viruses Vocabulary/Answer key
Bacteria and Viruses Vocabulary/Answer key
Bacteria and Viruses Vocabulary/Answer key
Bacteria and Viruses Vocabulary/Answer key
Bacteria and Viruses
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
LIFE SCIENCE
Ecosystems: Interactions, Energy, and Dynamics
Construct an explanation to predict patterns of interactions in different ecosystems in terms of the relationships between and among organisms (e.g., competition, predation, mutualism, commensalism, parasitism).