Name:

PT 8.2: Respiration
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Learning Target
(HS-LS1-7) Use a model to illustrate that cellular respiration is a chemical process
whereby the bonds of food molecules and oxygen molecules are broken and the
bonds in new compounds are formed resulting in a net transfer of energy.
(HS-LS2-3) Construct and revise an explanation based on evidence for the cycling of
matter and flow of energy in aerobic and anaerobic conditions

Guiding Questions
1. What happens to the food and oxygen consumed by an organism?
2. How does temperature affect cellular respiration?
3. How can energy and matter be cycled without oxygen?

Task 1 - Background
1. What does a plant need to survive and grow?
Sunlight, wat, carbon dioxide

2. What does an animal need to survive and grow?

Food, water, and oxygen

3. How do animals and plants depend on each other?

Animals depend on plants for energy. Plants
depend on animals to move seeds and grow in
new areas.

DIRECTIONS: Watch the following video: Aerobic Vs Anaerobic Respiration. Be sure to read the
paragraph and refer to your notes, then answer the questions below.
Autotrophs use photosynthesis to convert light energy from the sun into chemical energy,
which is stored as glucose and other organic compounds. Both autotrophs and heterotrophs
depend upon this glucose to power cellular activities. The difference is that plants make their
own glucose and humans have to eat food that already contains glucose.

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 Cellular respiration, which happens in our cells, breaks down the glucose we eat and the
oxygen that we breathe in. It produces the carbon dioxide we breathe out and the water that
we urinate out. It also produces the energy that our body then releases and stores in molecules
known as Adenosine Triphosphate (ATP). The processes in cellular respiration can have aerobic
and anaerobic conditions. The energy stored in ATP molecules is used to power an organism’s
life activities such as blood and oxygen circulation, excretion, movement, and other critical
functions of your body.

Question Answer
1. For human beings, __________ is the source of energy, and it food , oxygen
requires __________ to release this energy.

2. Cellular respiration is the release of energy from food Living cells

substances in __________.

3. There are two kinds of cellular respiration: __________ and Aerobic

__________.
Anaerobic

4. The key organelle inside cells of aerobic respiration is the mitochondria

__________.

5. All multicellular organisms and some __________ can carry this Yeast
type of respiration.

6. Alcoholic fermentation is carried out in plants and some yeast, Sugar, energy
where __________ is broken down to release __________.

7. The bacteria feed on sugar, which is then converted into Lactic acid
__________ and energy.

8. Muscles experience a shortage of __________, so the aerobic Oxygen

process becomes anaerobic.

9. The image below shows the chemical equation for cellular respiration: As glucose and
oxygen are consumed during respiration, carbon dioxide, water and energy is produced.

a. What are the reactants in cellular respiration?

Glucose and oxygen
b. What are the products of cellular respiration?
Carbon dioxide, water, energy

10. What does aerobic respiration produce?

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 Carbon dioxide , water, energy

11. When is anaerobic respiration needed? EXPLAIN.

When your body is unable to reive enough oxygen. Thi usually occurs when you are
exercising,.

12. What does anaerobic respiration produce?

In animals : lactic acid and energy
In plant cells and yeast: carbon dioxide ethanol, and energy

13. What is fermentation?

When an organism converts sugar into an acid, gas, or achohol during celluar respiration.

14. Why do you think we breathe harder and more often as we exercise more?
Our bodies need to intake more oxygen in order for cellular respiration to occur so more
energy can be produced, since it is being used at a faster rate.

15. Why do you think it is important to stretch before you exercise?

To start the process of cellular reportation.

Task 2 - Data Recording

DIRECTIONS: Watch this video Fermentation of Yeast & Sugar and answer the questions
below.

1. Which balloon had the largest growth?

The one with that had the most sugar in it.

2. Which balloon had no growth?

The ballon without sugar.

3. Explain why this happened to the balloons in #1 and #2. Be DETAILED and make sure
to use vocab words!
The balloons began to expand due to the release of the carbon dioxide. Carbo dioxide is
prodi=unced by way of anaerobic respiratory in a process called fermentation. In fermentation ,
sucrose is the reactant and carbon dioxide and ethanol are th products.

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Task 3 - Yeast Fermentation Lab
For this lab, you will observe how matter and
energy flow in both anaerobic conditions and
aerobic conditions of cellular respiration and how
temperature affects cellular respiration. As the
temperature increases, the rate of cellular
respiration increases. Yeast works better in
warmer conditions. However if the temperature is
too high, the yeast will not behave properly and
this will decrease how fast cellular respiration
happens.
MATERIALS: PROCEDURE:
● Water 1. Empty the contents of the yeast packet into the plastic bottle.
● Yeast packet 2. Pour the sugar into the plastic bottle. Note down what amount
● Sugar of teaspoons you have in the table below.
○ (1 tsp, 2 tsp, or 3 tsp) 3. Pour 1 cup of WARM water into the plastic bottle.
● Balloon 4. Place the cap on the bottle and shake GENTLY to mix the
● Plastic water bottle contents.
● Measuring Tape 5. Take the cap off and place the balloon on the lip of the bottle.
6. Wait at least 1 hour.
7. Measure the circumference* of your balloon and enter the data
in the table below.
a. *circumference is the distance around the center of a round
object.

Amount of teaspoons Circumference of balloon

2 35.2

Task 4 - Writing Prompt

DIRECTIONS: Please see teacher for worksheet.
**Complete TASK 4 on paper and turn into your teacher.**

Teacher signature: Corey

MASTERY RUBRIC AND COMPLETION CHECKLIST

Learning Target
(HS-LS1-7) Use a model to illustrate that cellular respiration is a chemical process whereby the
bonds of food molecules and oxygen molecules are broken and the bonds in new compounds are
formed resulting in a net transfer of energy.
(HS-LS2-3) Construct and revise an explanation based on evidence for the cycling of matter and
flow of energy in aerobic and anaerobic conditions.

4
 Guiding Question
1. What happens to the food and oxygen consumed by an organism?
2. How does temperature affect cellular respiration?
3. How can energy and matter be cycled without oxygen?

1 Concerns (2) Goal Achieved (3) Exceeded Mastery (4)

(Similar to a C) (Similar to a B or B+) (Similar to an A or A+)

A score of 2 means you 1) Topic and Content ❏ Answered the challenge question?
did everything you were My argument has a ❏ Real-world examples or
applications used not from the class
supposed to but your knowledgeable and activity.
answer may have used thoughtful response to ❏ Score 80% or above on the Unit
some vocabulary the learning target(s) quiz.
incorrectly or your use and guiding question(s). ❏ Supported my argument with
of evidence was unclear information that was not provided
in class and cited correctly.
or missing some 2) Use of Evidence and
❏ Used all score 4 vocabulary.
important details. Analysis
My argument is You need at least 3 boxes
supported by checked from the above boxes
information from the to have a chance at earning a
provided class resources grade of 4 if you got a 3 on
and class activities. everything else.

IMPORTANT! Any information used that is NOT learned from class MUST be cited or you will
have to redo the assignment! You must use YOUR OWN WORDS.
Required Vocabulary: If you do not use ALL of the Score 2 words you will get NO CREDIT.

Score 2 Words Score 3 Words Score 4 Words

● Cellular Respiration ● Cellular Respiration ● Cellular Respiration

● Carbon Dioxide ● Carbon Dioxide ● Carbon Dioxide
● Energy ● Energy ● Energy
● Oxygen ● Oxygen ● Oxygen
● Glucose ● Glucose ● Glucose
● Aerobic Respiration ● Aerobic Respiration
● Anaerobic Respiration ● Anaerobic Respiration
● Photosynthesis
● Chemical energy
● ATP Molecules
● Fermentation