Download Chemical Reactions

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Warm-Up (11/9)
Answer the following questions, and explain in a
complete sentence why each answer is correct.
Which of the following is the only organelle that is NOT bound by a
membrane?
A. Smooth ER
B. Nucleus
C. Ribosome
D. Lysosome
How is a prokaryotic different from a eukaryotic cell?
A. Only eukaryotic cells have DNA.
B. Prokaryotic cells are plants, and eukaryotic cells are animals.
C. Prokaryotic cells do not have a plasma membrane.
D. Prokaryotic cells do not have membrane-bound organelles, while
eukaryotic cells do.
Think-Pair-Share
Consider the following question and share your answer with
your partner. Feel free to use the sentence stem below. I will
call on three people to give me their partners’ answers.
You eat about 6 pounds of food every day.
Your poop and pee total to about 4 pounds.
Do you actually gain 2 pounds every day?
What happens to those 2 pounds?
I think the two pounds leaves my body by…
Chemical Reactions
Reactants: left of the arrow;
what gets transformed
by the reaction
Products: right of the arrow;
what the reaction
produces
Chemical Reactions
Big number: the “coefficient”
How many molecules there are
Chemical Reactions
BIG number: the “coefficient”
How many molecules there are
number: the “subscript”
How many atoms there are
Little
Chemical Reactions
What type of molecule is responsible for lowering the
activation energy of a reaction? Which biomolecule is it?
Chemical Reactions
ATP  ADP + energy
ATP releases energy
when it becomes ADP
Base
Chemical Reactions
ADP + energy  ATP
Cells store energy by
making ATP
Base
Independent Practice
Label the reactants and products of each reaction, and
state whether energy is being used or produced.
1. Mg + 2H2O  Mg(OH)2 + H2 +heat
2. ADP + energy  ATP
3. 2Fe + O2  2FeO
Closure
Answer the following question in a complete
sentence:
What do you see about the reactants
and products of Photosynthesis and
Cellular Respiration?
Name
Date
Period
Photosynthesis: light energy + CO2 + H2O  C6H12O6 + O2
Cellular Respiration: C6H12O6 + O2  CO2 + H2O + chemical energy
Scale
from 1-10