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2020/21 Academic Year Biology Work sheet Five for Grade 11
I. Write the correct answer for the following questions.
1. Summarize the main contributions of the following biologists and other scientists in the
development of cell theory.
A. Zekarias Jansen
B. Rodolf Virchow
C. Anton Van Leeuwnhoek
D. Francisco Redi
E. Robert Hooke
F. Watson and Crick
G. Rene Dutrechet
H. Scheilden & Schwann
2. Cube A has a side measuring 3mm. Cube B has a side measuring 18mm. Calculate the surfacearea-to-volume ratio of cube A in terms of surface area to volume ratio of cube B?
3. The convenient unit to measure length of:
A. Most animal cells
D. Smallest bacteria, Viruses and ribosomes
B. Most plant cells
E. Nucleus, Chloroplast and mitochondrion
C. Most bacterial cells
4. Compare and contrast the similarity and differences between prokaryotic cells and eukaryotic
cells.
5. List the main points of today’s cell theory.
6. Why are most cells microscopic in size?
7. Compare and contrast the resolution and magnification powers of compound light microscope
and electron microscope.
8. Write the main functions of the following cellular structures
A. Mitochondrion
E. Lysosome
B. Chloroplast
F. Rough endoplasmic reticulum
C. Ribosomes
G. Smooth endoplasmic reticulum
D. Cell membrane
H. Golgi apparatus
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Biology Work sheet Five for Grade 11