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01/08/15- No gum Please!
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Materials
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Pen/Pencil
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Notebook
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Packet
book
Objective: Today
we will identify
structures in
plants and animal
cells under
microscopes
Agenda
Daily question
Chapter 1-2
Packet
lab
Daily Question:
Write down some
structures that
are found in
plant cells but
NOT animal cells.
Ribosome's
• Small structures in
the cytoplasm that
create proteins.
• Ribosome's are
either free floating in
the cytoplasm of a
cell or attached to
endoplasmic
reticulum in a cell.
Vacuole
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Fluid-filled,
membranesurrounded cavities
inside a cell
Fills with food being
digested and waste
material that is on
its way out of the
cell
Like your suitcase,
a vacuole is a
temporary storage
space for the cell.
Lysosome
• Also called cell
vesicles
• Spherical organelles
surrounded by a
membrane
• They contain digestive
enzymes
• Where the digestion of
cell nutrients takes
place
Plant Vs. Animal Cell Lab
 Obtain materials from teacher
 Set magnification to 10x first (low power)
 Put Elodea slide under microscope observe what it looks
like on low power –draw a picture
 Put Elodea slide on high power, observe and identify
organelles-draw scientific picture in notebook
 Have one student come up to Ms. Mildebrath and swab
cheek cell, Ms. Mildebrath will put dye on slide, return with
animal cell to group
 Put animal cell under low power microscope, observe
organelles and structures- draw scientific drawing in
notebook
 Put animal cell under high power and observe changes,
identify organelles and draw observations in notebook
Scientific Drawing Example
Cork cell
Cell
membrane
Cork cell
100x
Photosynthesis
 Is the process that plant
cells use to change the
energy from sunlight into
chemical energy. Takes
place in the chloroplasts.
 Chlorophyll- a light
absorbing pigment, or
colored substance, that
traps the energy in sunlight.
 Chemical equation-
𝐻₂0 + 𝐶𝑂₂
⟶ 𝐶₆𝐻₁₂𝑂₆ + 𝑂₂
Cellular Respiration
Cells use oxygen to
release energy stored in
sugars such as glucose.
Takes place in
organelles called
mitochondria.
Chemical equation-
𝐶₆𝐻₁₂𝑂₆ + 𝑂₂ ⟶ 𝐻₂0 +
𝐶𝑂₂
Bite Mark Evidence
Investigators can analyze bite marks for characteristics to help them
identify victims or suspects as well as to exclude others. Marks can
be left on a victim’s skin or other objects, such as Styrofoam cups,
gum, or foods. Saliva or blood may be left behind that can be tested
for DNA. Dental records including x-rays can also provide useful
information, especially when attempting to identify a victim.
Bite Mark Evidence Video
Features to analyze:
• Type of bite mark (human or animal)
• Characteristics of the teeth (position, evidence of dental work,
wear patterns, etc.)
• Color of area to estimate how long ago the bite occurred (old or
recent bite)
• Swab for body fluids for DNA tests
Did you know?
The most famous incident where bite mark evidence led to a conviction, was in the case of
the notorious serial killer, Ted Bundy. He was responsible for an undetermined number of
murders between 1973 and 1978 and was finally tied to the murder of Lisa Levy through
bites that he had inflicted on her body.
Images: http://www.forensicdentistryonline.org/Forensic_pages_1/currentopic1.htm, http://www.trestonedental.co.uk/images/0303.jpg
It’s time to
investigate
some
“impressive”
evidence!
Image: http://www.sxc.hu/photo/442696
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Bite Mark Lab
Include your lab group members
names
Examine the candy in the bag, DO
NOT TAKE OUT OF BAG
Use your knowledge of bite marks,
evidence, to figure out which
suspect bit the candy
On paper, write in complete
sentences which suspect and why