Transcript What are Enzymes?

Subject: Biology
Topic: UNIT 2 CE CHEM of LIFE
Teacher: Parks
Date: --/--/--
NC Standard Course of Study Objective:
2.01 Biology NC Standard Course of Study
What is it you want students to know and be able to do at the end of your lesson?
Know the molecules of life. Distinguish organic molecule from other molecules. Know the
characteristics of organic molecules.
How will you know if they accomplish it? (Formative Assessment, Summative Assessment, Student
Product?)
Students will answer questions in teams. The questions will come from the powerpoint “CE Review of CHEM
LIFE” This will be a formative assessment in which the students’ product will be to answer the questions to
gain points for their teams. Teachers will give feedback on each right or wrong question.
Activity
Time
Description of Activities
1. Opening 5 minutes
5
minut
es
Use this opportunity to wait for all students to come into class. Students
will be assembled into 3 teams as they walk into the door. The teacher
should select the teams.
2. Work Period:
55min
.
(Formative assessment) The activity is on a powerpoint so all students
can easily read the directions and answer questions concerning the
chemistry of life. Students will be divided into 3 teams (Team A,B, C).
Team A will go first. If they answer correctly they get full points (3). If
they answer incorrectly, Team B can answer for 1 point, and attempt to
answer the next available question.
3. Closing:
55
min
The teacher will explain each answer after each question.
Teacher Input/
Guided Practice
Solo Time/ Pair/Group
Teach facilitated after
each question
What are Enzymes?
ANSWER:
Enzymes are proteins which
act as biological catalysts.
WHAT IS THE
MONOMER
CALLED FOR
THIS
MOLECULE?
Hint: That is DNA.
ANSWER:
NUCLEIC ACID
WHAT WOULD HAPPEN IF
THERE WERE NO ENZYMES IN
THE BODY?
ANSWER:
Without enzymes, several
reactions in cells would
never occur or happen to
slowly to be useful.
THE ITEMS ON
THE LEFT SIDE OF
THE ARROW ARE
CALLED THE
REACTANTS
WHILE THE ITEMS
ON THE RIGHT
SIDE OF THE
ARROW ARE
CALLED THE
____________
2H2 + O2  2H2O
ANSWER:
THE ITEMS ON THE RIGHT
SIDE ARE CALLED THE
PRODUCTS
WHAT IS THE MONOMER FOR A
CARBOHYDRATE CALLED?
ANSWER:
MONOSACCHARIDE
WHAT IS MEANT BY THE TERM
SACCHARIDE?
ANSWER:
“SUGAR”
What is a catalyst?
ANSWER:
It is a substance that speeds up the rate of a
chemical reaction.
What is a substrate?
ANSWER:
Enzymes bind to
molecules called
substrates.
These substrates are
the reactants that are
catalyzed by the
enzyme.
ANSWER:
The site on the enzyme
where the substrates bind is
called the_________
ANSWER:
The site on the enzyme where the
substrates bind is called the active
site.
How are enzymes affected by the reactions?
ANSWER:
Enzymes are NOT changed by
the reactions they catalyze,
therefore they are reusable!
In what ways can enzymes possibly be affected?
Hint: Think about
the lab on enzymes.
Did the cooked
items you tested
react differently than
the fresh items
when you added
peroxide? Did the
acidic and basic
items react?
ANSWER:
Enzymes can be affected by temperature and pH.
Temperatures outside the correct range can cause enzymes to break down or
change shape.
This break down is called denaturation.
Therefore, enzymes in our body work best at 37°C (98.6°F) and at a pH between
6.5 to 7.5.
Ex: Catalase is an enzyme that breaks down hydrogen peroxide.
H2O2 → H2O + O2 (gas)
A raw potato in H2O2 gives off O2. The boiled potato give no bubbles
because the enzyme has changed due to heat.
The study of all compounds that contain
bonds between many carbon atoms is
called what?
ANSWER:
ORGANIC CHEMISTRY
Four groups of organic compounds
found in living things are:
ANSWER:
carbohydrates,
lipids, nucleic
acids, and
proteins
DESCRIBE THE PROCESS OF
POLYMERIZATION OR TELL
WHAT IT MEANS?
ANSWER:
MACROMOLECULES JOIN
TOGETHER IN A PROCESS
CALLED POLYMERIZATION.
SMALLER UNITS CALLED
MONOMERS JOIN TOGETHER
TO MAKE POLYMERS.
DESCRIBE WHAT A LIPID
LOOKS LIKE USING
CORRECT TERMINOLOGY
ANSWER:
LIPIDS or “fatty acids” like oils
Glycerol connected to 3 fatty chains
WHICH ELEMENTS
MAKE UP PROTEINS?
ANSWER:
PROTEINS- contains Nitrogen as well as the hydrogens, carbons, and oxygens.
THE FOLLOWING ELEMENTS
MAKE UP WHAT ORGANIC
MOLECULE?
CARBON, OXYGEN, HYDROGEN ,
NITROGEN, PHOSPHORUS
ANSWER:
NUCLEIC ACIDS IN YOUR
DNA!!!!!!!!!!!!!
Match the molecule with its proper function.
Carbohydrate____________
a.Stored energy
Lipid______________
b. Building blocks
Protein_____________
c. quick energy
Nucleic Acids__________
d. Genes/ code for proteins
ANSWER:
Carbohydrate___C_________
Lipid_____A_________
Protein______B_______
Nucleic Acids____D______
a.Stored energy
b. Building blocks
c. quick energy
d. Genes/ code for proteins
What is this?
ANSWER:
LIPID
What is this?
ANSWER:
GLUCOSE or MONOSACCHARIDE
Proteins are
synthesized from less
complex organic
compounds known as
A.
B.
C.
D.
Starches
Amino acids
Enzymes
Carbons
ANSWER:
AMINO ACIDS
THE “LOCK AND KEY” MODEL OF
ENZYME ACTION ILLUSTRATES
THAT A PARTICULAR ENZYME
MOLECULE DOES WHAT?
ANSWER:
Each protein has a specific
shape, therefore enzymes bind
to substrates based on shape.
What is the monomer for a Nucleic
Acid called?
Answer:
Nucleotide