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Grade 7 · Biology · three levels

Grade 7 Cells & microscopy worksheet in three levels

The same 20-question worksheet on cells & microscopy in Support, Core and Challenge versions. Question by question, each version keeps the topic and changes the difficulty.

All three levels PDFAll three answer keysOriginal worksheet

Compare the three levels

Support

Easier questions on the same topics, for students who need more practice with the basics.

Questions
20 (20 medium)
Grade range
Grades 7 to 11
Topics
Cells & microscopy

Sample questions

  1. An object is 20 µm long and its image is 2000 µm long. Find magnification.
  2. A printed image is 19 mm long at 50× magnification. Find the actual length in micrometers. Round to 3 decimal places if needed. Answer in µm.
  3. A printed image is 65 mm long at 200× magnification. Find the actual length in micrometers. Round to 3 decimal places if needed. Answer in µm.

Core

Questions at the expected level for the grade.

Questions
20 (20 medium)
Grade range
Grades 7 to 11
Topics
Cells & microscopy

Sample questions

  1. A printed image is 3 mm long at 50× magnification. Find the actual length in micrometers. Round to 3 decimal places if needed. Answer in µm.
  2. A printed image is 60 mm long at 200× magnification. Find the actual length in micrometers. Round to 3 decimal places if needed. Answer in µm.
  3. A printed image is 54 mm long at 500× magnification. Find the actual length in micrometers. Round to 3 decimal places if needed. Answer in µm.

Challenge

Harder questions on the same topics, for students who are ready to stretch.

Questions
20 (20 challenge)
Grade range
Grades 9 to 12
Topics
Cells & microscopy

Sample questions

  1. A diploid parent cell has 8 chromosomes. In the standard mitosis model, how many chromosomes does each daughter nucleus receive?
  2. Starting with one cell, two complete rounds of division produce how many cells if none die?
  3. Which outcome fits the standard role of mitosis in growth and repair?

Using the three versions

  • Start everyone with the same short explanation, then hand out Support, Core or Challenge.
  • Question numbers line up across the versions, so you can go through the answers with the whole class.
  • The PDF has a cover page and each version on its own pages; the answer keys PDF has all three keys.

See the original worksheet or browse more three-level worksheets.