1. 3rd
6 Weeks
Review

2. 3rd 6 Week Vocabulary Bulb Cell Cell membrane Cell wall Chloroplasts
Cytoplasm
John Leewenhook
Mitochondria
Nucleus
Organ
Organ system
Organism
Protist
Robert Hooke
Tissue
Vacuole
Vascular plants
xylem
External stimuli
Equilibrium
Geotropism
Internal stimuli
Phototropism
Seedling
Stimulus
Turgor pressure
wilting

3. 1. What does a group of cells working together create?
Tissues

4. Organism > organ system > organ > tissue > cell
2. Sequence these words from most complex to most simple: cell, organism, organ, organ system, tissue,
Organism > organ system > organ > tissue > cell

5. 3. What do plants, animals, and protist all have in common?
All are made up of cells

6. 4. What are some similar functions that all cells carry on?
Reproduce
Have a nucleus
Can move
Grow

7. 5. Illustrate the cell theory using pictures of the levels of organism for plants, animals, and protist.

8. 6. What are the major differences between organelles found within plant and animal cells?
Plant Cells:
Cell wall
Chloroplasts
Large vacuole
Animal Cells:
- no cell wall
- small vacuoles
- have

9. 7. Compare and contrast the structure or organelles found in plant cells to those found in animal cells.

10. 8. Compare and contrast the function of organelles found in plant cells to those found in animal cells.
Chloroplast: contain green pigment that allows photosynthesis to occur (plant cell)
Cell Wall: support structure in a plant cell
Not needed in animals due to skeletal system

11. 9. Which organelles in plants are involved in the process of photosynthesis?
Chloroplasts

12. 10. What part of a plant does water travel through to reach the leaves?
Xylem
(water)
Phloem
(food)

13. 11. How would photosynthesis be affected if xylem was not present in vascular plants?
Would not be able to transfer water
-no turgid pressure

14. 12. What is the function of the bulb in a plant?
food reserves that enable a plant to lie dormant when water is unavailable (during winter or drought) and resume its active growth when favorable conditions again prevail

15. 13. What are the 3 steps of the cell theory?
Step 1: all organisms are composed of one or more cells
Step 2: the cell is the basic unit of life
Step 3: all cells are produced by the division of preexisting cells.

16. Cell Structure Riddles
1. I’m a real “powerhouse.” That’s plain to see. I break down food to release energy.
What Am I?
F: mitochondria

17. 2. Proteins are made here even though I’m quite small
2. Proteins are made here even though I’m quite small. You can find me in the cytoplasm or attached to the E.R.’s wall.
What Am I?
G: ribosome

18. 3. My name means “colored bodies,” and I contain DNA
3. My name means “colored bodies,” and I contain DNA. I pass on traits to new cells in a systematic way.
What Am I?
D: chromosomes

19. 4. I’m strong and stiff getting through me is tough
4. I’m strong and stiff getting through me is tough. I’m found only plants, but I guess that’s enough.
What Am I?
C: cell wall

20. 5. I’m the “brain” of the cell, or so they say
5. I’m the “brain” of the cell, or so they say. I regulate activities from day to day.
What Am I?
A: nucleus

21. 6. I’m full of holes, flexible and thin
6. I’m full of holes, flexible and thin. I control what gets out and what comes in.
What Am I?
E: cell membrane

22. 7. I’ve been called a “storage tank” by those with little taste
7. I’ve been called a “storage tank” by those with little taste. I’m a sac filled with water, food, enzymes, or waste.
What Am I?
H: vacuole

23. 8. Found only in plant cells, I’m green as can be
8. Found only in plant cells, I’m green as can be. I make food for the plant using the sun’s energy.
What Am I?
B: chloroplasts

24. 9. What triggers the wilting response in plants?
Lack of water in vacuoles

25. 10. What is homeostasis?
The ability or tendency of an organism or cell to maintain internal equilibrium by adjusting its physiological processes.
Organism is in balance.

26. 11. Compare and contrast stimulus and response.
Stimulus: Something causing or regarded as causing a response
Response: any behavior of a living organism that results from an external or internal stimulus.
Stimulus: light
Response: plant grows
towards light

27. 12. What part of the cell holds / stores water?
Vacuoles

28. 13. Relate a wilted plant to turgor pressure.
As vacuole fills with water, it pushes out onto the plant’s cell wall.
As vacuole looses water, it does not push out on cell wall and this causes the plant to wilt.

29. 14. Illustrate and label how gravity affects directional growth on roots and stems in a seedling.
Click Here
Geotropism: roots grow
Down due to gravity pulling
On them as they grow

30. 15. Describe the growth of a plant in response to a narrow passage of light (diagram needed)
Phototropism: plants grow toward the light.

31. 16. List different examples of external stimuli for plants and how plants respond to each example.

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