September 3rd, 4th, 2013
Unit 2: Biochemistry (Chemistry of Life)
Unit 1 DLT:
6: I can identify and clarify biological research questions and design
experiments.
Unit 2 DLT:
1. I can identify subatomic particles and describe how they are
arranged in atoms.
2. I can describe the difference between ions and atoms and
the importance of ions in biological processes.
Bellringer:
How Penicillin Was Discovered
In 1928, Sir Alexander Fleming was studying Staphylococcus bacteria growing in culture dishes. He noticed
that a mold called Penicillium was also growing in some of the dishes. A clear area existed around the mold
because all the bacteria that had grown in this area had died. In the culture dishes without the mold, no clear
areas were present.
Fleming hypothesized that the mold must be producing a chemical that killed the bacteria. He decided to
isolate this substance and test it to see if it would kill bacteria. Fleming transferred the mold to a nutrient broth
solution. This solution contained all the materials the mold needed to grow. After the mold grew, he removed it
from the nutrient broth. Fleming then added the nutrient broth in which the mold had grown to a culture of
bacteria. He observed that the bacteria died which was later used to develop antibiotics used to treat a variety
of diseases.
1. Identify the problem.
2. What was Fleming's hypothesis?
3. How was the hypothesis tested?
4. Should the hypothesis be supported or rejected based on the experiment?
5. This experiment led to the development of what major medical advancement?
Today:
1. Check mealworms (Day 1 data)/finish set-up (Day 0 data)
2. Learning Target Quiz
3. Biochemistry pre-test – participation points
4. Subatomic particles and their arrangement in atoms
a. List the subatomic particles in an atom
b. http://www.bbc.co.uk/schools/gcsebitesize/science/add
_aqa_pre_2011/atomic/atomstrucact.shtml - watch this
quick atomic structure review
c. Draw an atom of calcium in your notebooks
5. Atoms versus Ions Group Work and presentations
Directions: Pick the best answer for each question.
1. Which of the following activities do you MOST enjoy?
a. reading and/or writing
b. drawing and/or any artistic activity
c. acting in a play
2. How would you BEST describe yourself in school?
a. talkative
b. creative
c. dramatic
3. Which of the following tasks would be the LEAST
stressful/challenging for you?
a. speaking in front of a group of people
b. chairing a community improvement committee
c. playing the lead part in a community theater production
4. With which group of people (yes, some are deceased, but we
are pretending) would you MOST want to spend the day?
a. Gloria Steinhem; Winston Churchill; Jane Yolen; Chris
Allsburg
b. Pablo Picasso; Becky Banks; Norman Rockwell; Charles
Shultz
c. William Shakespeare; Cast of Glee; Johnny Depp
5. Which subject would you choose as a favorite in high
school?
a. journalism
b. art
c. speech and drama
Which letter was your most recurring response?
Group Work:
Each group will have a boss, materials manager, time keeper, and
spokesperson. All group members should be actively working on the
assignment.
ARTISTS
Using objects in the room, construct or draw on paper a model of the
oxygen atom. Then, construct or draw on paper a model of an oxygen
cation and oxygen anion. The masterpiece should include the location
and properties of the three main subatomic particles and other
requirements in the rubric. The spokesperson should be prepared to
share the drawings/constructions, and each person should be prepared
to answer questions.
ACTORS
Using each other as the subatomic particles, depict what a boron atom
would look like if we could see the particles. Then, depict what a boron
anion and cation would look like. The skit must include the location and
properties of the subatomic particles. Then, you must show what would
happen for the atom to become an ion. The spokesperson must be able
to explain the animation and each person should be prepared to answer
any questions.
AUTHORS
Write a short description of the structure of the sodium atom, Then,
write a short description of a sodium cation and anion. Include the
location and properties of the three main subatomic particles and
guidelines listed on the rubric.
Atoms vs. Ions
Rubric
Your assigned element should include the following information:







number of protons, neutrons, and electrons
charges of each subatomic particle
placement of each subatomic particle
element symbol
atomic mass
atomic number
nucleus
You must research your element as a group and be prepared to show the description of
your atom and ions.
A
Presentation includes
all required
information, plus 1-3
bits of additional info
Presentation is very
clear. Students
understand and can
explain atom and ions
accurately and
precisely
B
Presentation includes
all required info
C
Presentation
includes almost all
required info
D
Presentation left
out important
info
Presentation is very
clear. Students
understand and can
explain atom and ions
accurately, but lacks
some detail or
clarification.
Presentation is
somewhat clear.
Students understand
and can explain
atom and ions
including some info.
Presentation is
vague and
unclear.
Students can
explain only a
little info about
atom and ions;
does not
demonstrate
understanding.
Atom and ion
design is
incomplete, and
/or lacks neatness
and accuracy
Atom and ion design, Atom and ion design
skit, or written essay is is neat, creative and
very neat, creative,
accurate
accurate and detailed
Atom and ion
design is neat,
complete, and
accurate
Capable of creating an
atom and ions
accurately without
help and can answer
questions accurately
Capable of creating
an atom and ions with
some direction.
Answers questions
accurately
Attempts to create
an atom and ions,
but needs to be told
how by teacher.
Answers aren’t
clear.
Does not
complete
building an
atom/ions.
Cannot answer
questions.
Exit Slip:
1. What type of ion is formed when an atom loses electrons?
a. Anion
b. Cation
c. Negative
d. Neutral