Name______________________________________________________
Period____________
Date_______________
Sameroff
Objectives:
Do Now
SWBAT determine how to make water safe to drink.
SWBAT describe several ways people use water.
Activity #1
Activity #2
Exit Ticket
DO NOW
1. Have you ever gotten sick from drinking impure water? Do you know someone who has?
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VOCABULARY-Define the words below using your worksheet.
Physical
Water
Scarcity
ACTIVITY #1
Why is clean water necessary for life? Record your answers in the bubble map below.
THINK, PAIR, SHARE
What do you think the phrase “eat water” means? In what ways do you think you “eat” water every day? Allow students 2–3
minutes to record their thoughts.
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ACTIVITY #2
Answer questions 3-8 based on information from the map in Figure 2.
3. Name the countries or global areas that are experiencing physical water scarcity.
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4. What would you predict the climate to be in these areas and why?
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5. Name the countries or global areas that are experiencing economic water scarcity.
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6. Name the countries or global areas that are not experiencing any water scarcity.
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7. What do you predict the difference in per capita income (average income per person) would be between regions with
plenty of water and regions with economic water scarcity?
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8. The southwestern United States is typically characterized as having a dry, arid climate. Why might this region be shown as
having plenty of water even if it is dry and arid?
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DIRECTIONS: Read below with your partner, switching who is the reader and who is the summarizer each paragraph. The
cloud should contain the MAIN IDEA of each paragraph.
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ATP or adenosine triphosphate is the main energy-carrying or energytransferring molecule of all living things. In cellular respiration, the
energy in the food you eat is released and used to power the cell and its
functions. ATP is the molecule that accepts the energy from the food
when it is broken down and transfers it to where it is needed in the cell.
In photosynthesis, light energy is first captured by chlorophyll and
transferred to ATP that then goes to power the process of making
glucose. ATP is the energy “currency” of the cell. When a cell needs
work to be doe it must spend its ATP.
ATP is made up of three subunits: an adenine
molecule, a ribose sugar and 3 phosphate
groups. “Adenosine” is the term used for the
molecule formed when adenine is bonded to
ribose. When two phosphate groups are
attached it is called ADP (adenosine
diphosphate).
The useable energy in ATP is stored in the last “high-energy” bond
holding on the third phosphate group. The energy that is
released during the formation of ADP is used to perform cellular
work or a specific function. ADP does not have enough energy to
perform cellular work so it must be turned back into ATP by
adding a phosphate group back on. The energy needed to
“reenergize” ATP by adding a phosphate comes from the
chemical breakdown of the food we eat (cellular respiration) or
from light energy (photosynthesis). Energy is stored in the bonds
of glucose during photosynthesis. During cellular respiration,
energy is made available (released) from the breakdown of
glucose (food) and is used to change ADP to ATP.
It is estimated that humans use almost their
body weight in ATP each day to keep their cells
functioning. In fact, a cell can use about 2
trillion molecules of ATP per second!! Where
does all of the ATP come from? You guessed it;
it is recycled over and over again from ADP. Just
like rechargeable batteries.
Part A: Chemical Structure of ATP
1.
In cellular respiration what is the food you eat used for? ________________________
2.
What is ATP made up of?
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3.
Describe the term adenosine.
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4.
Where is the useable energy in ATP stored?
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DIRECTIONS: Use the word bank below to fill in the missing words.
ADP
5.
glucose
group
energy
ATP
ATP is the _______________ “currency” of the cell.
6.
The useable energy in ATP is stored in the last “high-energy” bond holding on the third phosphate
___________________.
7.
During cellular respiration, energy is made available (released) from the breakdown of _________________ (food)
and is used to change ADP to ATP.
8.
It is estimated that humans use almost their body weight in _________ each day to keep their cells functioning.
9.
You guessed it; it is recycled over and over again from _________. Just like rechargeable batteries.
Regents Questions
1. What is the function of ATP in living things?
a. provides energy for cells
b. stores genetic information
c. provides structure in the nucleus
2. The basic building blocks of a protein are
a. glucose molecules
b. amino acids
c. Hormones
d. fat
3. Which sequence of terms is in the correct order from simplest to most complex?
4. What are the abiotic factors that characterize a forest ecosystem?
A) light and biodiversity
B) temperature and amount of available water
C) types of procedures and decomposers
D) pH and number of heterotrophs
Heterotrophs and Autotrophs The energy to make ATP from ADP comes from food (glucose).
Organisms get food in one of two ways.
Heterotrophs get food by consuming (eating) other organisms.
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Autotrophs use the energy in sunlight to make their own food.
Photosynthesis is the process that uses light energy to produce food molecules
DIRECTIONS: Complete the table comparing two types of organisms.
Autotrophs and Heterotrophs
Type
Description
Examples
Autotrophs
Heterotroph
THINK, PAIR, SHARE
Suppose that you ate a hamburger on a wheat roll with lettuce, tomatoes, and onions for lunch. As you ate, you took in food
molecules from plants and animals. Explain why all the energy in the food molecules of this hamburger could be traced back
to the sun.
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What is ATP and what is its role in the cell?
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1. What are the reactants of the photosynthesis reaction?
A.
chlorophyll and light
C. carbohydrates and oxygen
B.
carbon dioxide and water D. high-energy electrons and air
2. What are the products of the light-dependent reactions?
A.
chloroplasts and light
C. oxygen and ATP
B.
proteins and lipids
D. water and sugars
3. Where do the light-independent reactions occur?
A.
stroma
C. chlorophyll
B.
thylakoids
D. mitochondria
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