Download File - 7th Grade Science!

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Cell Unit Test Review Sheet
1. Label the cell membrane, the nucleus, and the cytoplasm in the diagram
to the right. Look in notebook
2. What is the function of organelle 2 in the diagram to the right? Energy
production
3. What is the name of organelle 3 in the
diagram to the right? Cell membrane
4. What is the name of organelle 4 in the diagram to the left? Chloroplast
5. What is the function of organelle 5 in the diagram to the left? Support
and protect cell
6. Which of the following best describes the structure and function of
organelle 6 in the diagram to the left? Structure: Nucleus, Function: Store DNA, direct cell
activities
7. Why can you say that the cell on the right is an animal cell and the cell on the left is a plant cell? (list
as many reasons as possible) Cell on the left has a cell wall and chloroplast and the cell on the
right does not. Cell on the left has a large central vacuole.
8. Glucose molecules contain stored energy for plants. Glucose is made from carbon dioxide and water
molecules during photosynthesis. What kind of energy do plants use to make glucose molecules?
Radiant
9. List 3-4 sources of the energy that plants use to produce glucose molecules through photosynthesis.
Sun, flashlight, glow-stick, light bulb
10. Ethan and Justin planted some flowers in two cups. The first cup was placed outside in a sunny
spot. The second cup was placed under a heat lamp in their science classroom. After two weeks Ethan
and Justin discovered that the flowers in both cups had grown three inches taller. Why did this happen?
They were both exposed to radiant energy
11. Describe the transformation of energy that occurs during photosynthesis. Radiant to chemical energy
12. During photosynthesis plants make a source of food (energy) called glucose (sugar). Where do the
plants get the atoms used to make the glucose during the process of photosynthesis? Water and
carbon dioxide
13. During which season do trees do the most photosynthesis, and
why? Summer because there are more leaves on the tree
because there is more sunlight
14. Which part of the cell shown to the right plays a large role in the
process of photosynthesis? C-Chloroplast
15. List the levels of organization from smallest to largest. Cells,
tissues, organs, organ system
16. Finish labeling the diagram to the right with the levels of
organization, arranged by the number of parts at each level. Cells-
Square, Circle-tissues, Triangle-Organs, Hexagon-Organ
System
17. List several examples of organisms. Humans, bacteria, plants,
trees
18. List several examples of organs (both animal and plant organs). Leaf, root, bone, stomach
19. What is a tissue? Group of cells that work together to perform a specific function
20. What is an organ system? List several examples from both plants and animals. A group of organs
that work together to perform functions. Ex. Roots system, skeletal, digestive
21. What is the name of the plant organ in which photosynthesis usually takes place? Leaf
22. A digestive system is used to break down food into smaller pieces, producing energy. What cellular
organelle has a similar function to the digestive system? Mitochondria
23. The kidneys are human organs that remove waste products from the blood stream and concentrate
them in urine. Which cellular organelle has a function similar to that of the kidneys? Lysosome
24. Which human organ is the nucleus similar to in function? The brain
25. What human organ has a function similar to that of the cell membrane? The skin
26. What do plant cells and animal cells have in common? Cytoplasm, mitochondria, nucleus,
cell membrane
27. What do all living things have in common? Made of cells
28. According to cell theory, all living organisms are made of… cells
29. What is the difference between humans and rocks? We are alive the are not
30. Who was the first scientist to observe single-celled organisms using a microscope? Van
Leeuwenhoek
31. What type of microscope have we used in our 7th grade science class this year? Light
32. How do you calculate the total magnification of a specimen
under a microscope? Ocular lens x objective lens
33. What is the name of the microscope part labeled “A” in the
picture to the right? Eye Piece
34. What is the function of the coarse/fine adjustment knobs on a
microscope? To bring object into focus (Move stage up
and down)
35. On which two parts of the microscope in the picture to the
right should your hands be when carrying the microscope
properly? Base and arm (B and D)