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

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

• Tissues

2. Sequence these words from 2. Sequence these words from most complex to most simple:most complex to most simple: cell, organism, organ, organ cell, organism, organ, organ

system, tissue,system, tissue,

• Organism > organ system > organ > tissue > cell

3. What do plants, animals, and 3. What do plants, animals, and protist all have in common?protist all have in common?

• All are made up of cells

4. What are some similar functions 4. What are some similar functions that all cells carry on?that all cells carry on?

• Reproduce

• Have a nucleus

• Can move

• Grow

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

6. What are the major differences 6. What are the major differences between organelles found within between organelles found within

plant and animal cells?plant and animal cells?• Plant Cells:

–Cell wall

–Chloroplasts

–Large vacuole

Animal Cells:

- no cell wall

- small vacuoles

- have

7. Compare and contrast the 7. Compare and contrast the structure or organelles found in structure or organelles found in

plant cells to those found in animal plant cells to those found in animal cells.cells.

8. Compare and contrast the 8. Compare and contrast the function of organelles found in function of organelles found in

plant cells to those found in animal plant cells to those found in animal cells.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

http://www.biologyjunction.com/cell_functions.htm

9. Which organelles in plants are 9. Which organelles in plants are involved in the process of involved in the process of

photosynthesis?photosynthesis?

• Chloroplasts

10. What part of a plant does 10. What part of a plant does water travel through to reach the water travel through to reach the

leaves?leaves?• Xylem

– (water)

– Phloem• (food)

11. How would photosynthesis be 11. How would photosynthesis be affected if xylem was not present affected if xylem was not present

in vascular plants?in vascular plants?

• Would not be able to transfer water– -no turgid

pressure

12. What is the function of 12. What is the function of the bulb in a plant?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 13. What are the 3 steps of the cell theory?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 2. Proteins are made here even though I’m quite small. even though I’m quite small. You can find me in the You can find me in the cytoplasm or attached to the cytoplasm or attached to the E.R.’s wall.E.R.’s wall.

•What Am I?What Am I?

• G: ribosome

•3. My name means “colored 3. My name means “colored bodies,” and I contain DNA. I bodies,” and I contain DNA. I pass on traits to new cells in a pass on traits to new cells in a systematic way.systematic way.

•What Am I?What Am I?

• D: chromosomes

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

• What Am I?

• C: cell wall

•5. I’m the “brain” of the cell, 5. I’m the “brain” of the cell, or so they say. I regulate or so they say. I regulate activities from day to day.activities from day to day.

•What Am I?What Am I?

• A: nucleus

•6. I’m full of holes, flexible 6. I’m full of holes, flexible and thin. I control what gets and thin. I control what gets out and what comes in.out and what comes in.

•What Am I?What Am I?

• E: cell membrane

•7. I’ve been called a “storage 7. I’ve been called a “storage tank” by those with little tank” by those with little taste. I’m a sac filled with taste. I’m a sac filled with water, food, enzymes, or water, food, enzymes, or waste.waste.

•What Am I?What Am I?

• H: vacuole

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

• What Am I?

• B: chloroplasts

9. What triggers the wilting 9. What triggers the wilting response in plants?response in plants?

• Lack of water in vacuoles

10. What is homeostasis?10. What is homeostasis?

•The ability or tendency of an The ability or tendency of an organism or cell to maintain organism or cell to maintain internal equilibrium by adjusting internal equilibrium by adjusting its physiological processes.its physiological processes.

•Organism is in balance.Organism is in balance.

11. Compare and contrast 11. Compare and contrast stimulus and response.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 12. What part of the cell holds / stores water?holds / stores water?

• Vacuoles

13. Relate a wilted plant to 13. Relate a wilted plant to turgor pressure.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 14. Illustrate and label how gravity affects directional growth on roots and affects directional growth on roots and

stems in a seedling.stems in a seedling.

• Geotropism: roots grow

Down due to gravity pulling

On them as they grow

15. Describe the growth of a plant 15. Describe the growth of a plant in response to a narrow passage of in response to a narrow passage of

light light (diagram needed)(diagram needed)

• Phototropism: plants grow toward the light.

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

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