Interactive Video Script Template
Lesson
Objective
Course
Semester
Unit
Lesson
Science 6
B
1
8
Students will identify the basic structures found within
cells as identified by a microscope.
CLIP A
Introduction – 45 to 60 seconds
Visual
Audio
<image>
Microscopes were developed by two
Dutch scientists in the 1590’s.
http://www.morguefile.com/archive/display/
924049
<image>
The first type of microscope invented was
the compound microscope.
http://pixabay.com/en/microscope-whitechemistry-isolated-217144/
<image>
This type of microscope uses light and a
series of lenses to magnify the object.
http://pixabay.com/en/girl-microscopescience-183008/
<image>
Organelles such as the nucleus, cell
membrane, and cell wall can be seen
using a compound microscope.
http://pixabay.com/en/cell-informationanimal-biology-48542/
<image>
Cells are actually pretty tricky to see
under a microscope.
http://pixabay.com/en/bacteria-blackhealth-microbiology-359956/
<image>
Cells are translucent, and must be dyed a
color in order to see the organelles.
http://pixabay.com/en/microbiologymicrobiologist-268103/
<image>
Scientists often choose dyes that are
reddish pink or blue to make them more
visible.
http://www.morguefile.com/archive/display/
96350
<image>
To see further inside the cell, scientists
use an electron microscope with a much
stronger power to view the organelles.
http://pixabay.com/en/lab-laboratoryresearch-scientific-385348/
Question for Clip A
Stem:
Which of the following organelles cannot
be seen using a compound microscope?
Answers for Question A
A. Chromosomes
B. Cell membrane
C. Cell Wall
D. Nucleus
Correct Response  A
Correct – Go to Clip B
Incorrect – Go to Clip E
CLIP B
<image>
Build on Introduction – 25 to 35 seconds
When looking at a dyed cell underneath a
microscope, you can see an array of
organelles.
http://commons.wikimedia.org/wiki/File:Cys
toisospora_belli_oocyst_in_epithelial_cell_
%28hematoxylin_and_eosin%29_2.jpg
<include arrow pointing towards the purple
circular outline of one of the cells towards
the right side of the image>
<image>
One of the most predominant organelles
is the cell membrane.
http://commons.wikimedia.org/wiki/File:Den
dritic_cells.jpg
<image>
The cell membrane of an animal cell is
circular.
http://pixabay.com/en/bubble-fun-colorsgame-flight-83758/
<image>
It looks like a thin ring surrounding the
cell.
http://pixabay.com/en/sunrise-mountainaperture-ring-225414/
Question for Clip B
Stem:
Which of the following answers best
describes the shape of an animal cell’s
membrane?
Answers for Question B
A. Triangular
B. Circular
C. Square
D. Rectangular
Correct Response  B
Correct – Go to Clip C
Incorrect – Go to Clip F
CLIP C
Build on Clip B – 25 to 35 seconds
Visual
Audio
<image>
Unlike the animal cell, the plant cell is a
noticeably different shape.
http://commons.wikimedia.org/wiki/File:Pris
matic_crystals_in_onion_scale.jpg
<image>
Under a microscope, plant cells appear
rectangular.
http://pixabay.com/en/tiles-green-wallpattern-geometric-424611/
<image>
http://pixabay.com/en/office-windowsfacade-architecture-386493/
The rectangular outline that we see is
from the cell wall, and the cell membrane,
which takes on the shape of the cell wall.
<image>
So, even though the cell membrane is
round in the animal cell, it can also be
square in a plant cell.
http://commons.wikimedia.org/wiki/File:Sce
nedesmus_GLERL.jpg
Question for Clip C
Stem:
Which of the following combinations of
organelles is responsible for the shape of a
plant cell?
Answers for Question C
A. Cell Membrane: Nucleus
B. Cell Wall: Endoplasmic Reticulum
C. Cell Wall: Cell Membrane
D. Nucleus: Endoplasmic Reticulum
Correct Response  C
Correct – Go to Clip D
Incorrect – Go to Clip G
<image>
CLIP D
Build on Clip C – 25 to 35 seconds
Visual
Audio
As we increase magnification, we can see
smaller organelles such as the nucleus,
and mitochondria.
http://commons.wikimedia.org/wiki/File:Mic
rasterias_.jpg
<image>
The nucleus will look like a dark colored
circle within the cell.
http://commons.wikimedia.org/wiki/File:Chl
amydomonas_TEM_06.jpg
<image>
Mitochondria will be in the shape of kidney
beans.
http://pixabay.com/en/beans-kidney-pileheap-nobody-316592/
<image>
Electron microscopes are necessary if we
want to see organelles such as ribosomes
and lysosomes.
http://commons.wikimedia.org/wiki/File:Tra
nsmission_electron_microscope_Kemira.jp
g
Question for Clip D
Stem:
Which of the following organelles can be
seen under an Electron Microscope and is
in the shape of a kidney bean?
Answers for Question D
A. Mitochondria
B. Nucleus
C. Ribosomes
D. Lysosomes
Correct Response  A
Correct - Success Alert
Incorrect – Go to Clip H
CLIP E
Remediation for Clip A – 25 to 35 seconds
Visual
Audio
<image>
There are various types of microscopes
that can be used to see cells.
http://commons.wikimedia.org/wiki/File:OR
NL_Electron_Microscope_%28800309497
1%29.jpg
<image>
Before most cells can be seen under the
microscope, they must be dyed.
http://www.morguefile.com/archive/display/
824856
<image>
Cells are characteristically translucent,
which mean they are clear and seethrough.
http://commons.wikimedia.org/wiki/File:Chi
ck_embryo_in_methyl_salicylate.jpg
<image>
However, specialized organelles in plant
cells called chloroplasts can be seen
without dye; Chloroplasts are green.
http://commons.wikimedia.org/wiki/File:Cya
nobacteria_guerrero_negro.jpg
Question for Clip E
Stem:
Which of the following organelles can be
seen without dying the cell?
Answers for Question E
A. Mitochondria
B. Endoplasmic Reticulum
C. Chloroplast
D. Ribosomes
Correct Response  C
Correct – Go to Clip B
Incorrect – Go to Clip F
CLIP F
Remediation for Clip B – 25 to 35 seconds
Visual
Audio
<image>
Animal cells are often in the shape of a
sphere.
http://commons.wikimedia.org/wiki/File:Chl
amydomonas2-1.jpg
<image>
An organelle that can be easily seen
under a microscope when dyed is the cell
membrane.
http://www.morguefile.com/archive/display/
824855
<image>
The cell membrane is an organelle similar
to our skin. It is a protective barrier that
only allows certain things in and certain
things out.
http://pixabay.com/en/skin-hair-arm-man222664/
<image>
This barrier can be seen as a ring around
the outer perimeter of the cell.
http://pixabay.com/en/soap-bubble-blowbubble-ring-308138/
Question for Clip F
Stem:
Which of the following organelles can be
seen as a ring around the outer perimeter
of an animal cell?
Answers for Question F
A. Cell Wall
B. Nucleus
C. Endoplasmic Reticulum
D. Cell Membrane
Correct Response  D
Correct – Go to Clip C
Incorrect – Intervention Alert – then Clip B
CLIP G
Remediation for Clip C – 25 to 35 seconds
Visual
Audio
<image>
Unlike the animal cell, a plant cell has a
rigid outer layer called the cell wall.
http://commons.wikimedia.org/wiki/File:Cru
cigenia_EPA.jpg
<image>
Under a microscope, the cell wall gives
the plant cell a rectangular shape that
resembles a brick.
http://commons.wikimedia.org/wiki/File:Diat
omeas_w.jpg
<image>
http://commons.wikimedia.org/wiki/File:Sce
nedesmus_bijunga_EPA.jpg
When looking at a plant stem under a
microscope, plant cells resemble a green
brick wall.
<label the right side of the image with
arrows and labels. The outermost border is
the cell wall, the next, inner darker border
is the cell membrane>
<image>
It is important to keep in mind that plant
cells also have cell membranes that are
located next to the cell wall.
http://commons.wikimedia.org/wiki/File:Chl
amydomonas_TEM_05.jpg
Question for Clip G
Stem:
Which of the following answers best
describes the shape of a plant cell?
Answers for Question G
A. Rectangular
B. Spherical
C. Circular
D. Triangular
Correct Response  A
Correct – Go to Clip D
Incorrect – Go to Clip F
<image>
CLIP H
Remediation for Clip D – 25 to 35 seconds
Visual
Audio
The nucleus of a cell can also be seen
under a microscope when dyed.
http://commons.wikimedia.org/wiki/File:Mix
ed_phytoplankton.jpg
<image>
We need stronger, more powerful
microscopes such as electron
microscopes to be able to see the smaller
organelles.
http://commons.wikimedia.org/wiki/File:Chl
amydomonas_TEM_02.jpg
<image>
Organelles that can be seen under an
electron microscope include mitochondria
and vacuoles.
http://commons.wikimedia.org/wiki/File:Chl
amydomonas_TEM_04.jpg
<image>
http://commons.wikimedia.org/wiki/File:Mit
oChondria.jpg
Mitochondria are often shaped like kidney
beans.
Question for Clip H
Stem:
Which of the following organelles requires
the use of an electron microscope in order
to be seen?
Answers for Question H
A. Nucleus
B. Cell Wall
C. Cell Membrane
D. Mitochondria
Correct Response  D
Correct – Success Alert
Incorrect – Go to Clip G