Transcript 1st Semester District Test Review Sheet

3rd 6 Week Vocabulary
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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?
•
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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
• Plant Cells: cells?
Animal Cells:
–Cell wall
- no cell wall
–Chloroplasts
–Large vacuole
- 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.
http://www.biologyjunction.com/cell_functions.htm
• 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.
• 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.
• 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.
• 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.
• What Am I?
• A: nucleus
• 6. I’m full of holes, flexible
and thin. I control what
gets out and what comes
in.
• 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.
• 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.
• 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.
• 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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