3 rd 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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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

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.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?What Am I? G: ribosome

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

4. I’m strong and stiff getting through me is tough. I’m found only plants, but I guess that’s enough.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

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

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

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

8. Found only in plant cells, I’m green as can be. I make food for the plant using the sun’s energy.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

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

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

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.

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

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.

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

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

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

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