Cellular Respiration 9-6-23

9/6/23

Biology
Cellular

Respiration

Orientation Day 1

Georgia Standards of

Excellence

SB1. Obtain, evaluate, and communicate information to analyze the nature of the relationships between structures and functions in living cells.

e. Ask questions to investigate and provide explanations about the roles of photosynthesis and
respiration in the cycling of matter and flow of energy within the cell (e.g., single-celled alga).

(Clarification statement: Instruction should focus on understanding the inputs, outputs,
and functions of photosynthesis and respiration and the functions of the major
sub-processes of each including glycolysis, Krebs cycle, electron transport chain, light
reactions, and Calvin cycle.)

Today’s Goals:

1. I can explain the structure and function of Adenosine Triphosphate

2. I can describe the process of cellular respiration

Prior Knowledge

Activate!

Click here to join the Jamboard!

Choose a sticky note and add something to at least 2 corners!

● All living things require energy for
their essential functions.

● The primary source of this energy is the Sun (with few exceptions)

● What are some processes that cells
need energy to do?

Let’s talk about

Energy!

ATP

The energy molecule!

● ATP stands for adenosine triphosphate – a nucleotide. It contains a base, a sugar,
and a tail with 3 phosphate units

● ATP stores and releases energy in its bonds in response to the energy needs of the cell

● Cells constantly need to produce ATP, or they will die!

● How is ATP produced?

Cellular respiration – the breaking
down of carbohydrates obtained
either by photosynthesis or by the
consumption of food

Adenine base

Ribose
Sugar

P P P

●ATP is ideal for short-term energy usage,
but is too unstable for long term storage

●One use for ATP is to store other
molecules such as lipids and starches for long-term energy

●When the energy is needed again, the
starch and fat storage can be broken down to release the available energy in order to build additional ATP molecules.

Energy Storage!

Cellular Respiration

The process by which
cells convert sugar
(glucose) into usable
energy (ATP)

Cellular Respiration:
Inputs & Outputs
(Chemical Equation)

6O2 + C6H12O6➡ 6CO2 + 6H2O + 38 ATP

Inputs, aka REACTANTS

Outputs, aka PRODUCTS

Oxygen + glucose ➡ carbon dioxide + water + ATP

Cellular Respiration

Cellular Respiration is
also known as Aerobic Respiration which means with oxygen!

There are 3 main stages:
●Glycolysis - 2 ATP
●The Krebs Cycle - 2 ATP
●The Electron Transport
Chain - 34 ATP

01

02

03

If Cellular Respiration
occurs without
oxygen, it is known as
Anaerobic Respiration.

Now let’s look a little closer!

Aerobic Respiration:
● Requires O2
● Begins with glycolysis (aka. the breakdown of glucose) in
the cytoplasm
● After the Krebs Cycle and the Electron Transport Chain, in a perfect world, we get 38 ATP.

Now let’s look a little closer!

Anaerobic Respiration:

●Occurs when little or no O2 is available
●Begins with glycolysis (aka. The
breakdown of glucose) in the cytoplasm
●Fermentation happens next!
○Lactic Acid Fermentation in animals
○Ethanol Fermentation in plants/
single-celled organisms
●2 ATP are produced!

The reason your muscles
burn after exercising!

​

​

Test your knowledge!

01

03

Where in the cell does glycolysis take place?

​02

​

What molecule is the “input” for cellular
respiration?

​

What molecule
must be present for Aerobic respiration to occur?

​

​

Test your knowledge!

01

03

Where in the cell does glycolysis take place?

​02

​

What molecule is the “input” for cellular
respiration?

​

What molecule
must be present for Aerobic respiration to occur?

​The Cytoplasm!

​C₆H₁₂O₆ - Glucose!

O₂ - Oxygen!

HOT Questions!

What is the role of respiration in the flow of energy in the cell?

How does that role help maintain
homeostasis?

HOT Questions!

What is the role of respiration in the flow of energy in the cell?

How does that role help maintain
homeostasis?

Cellular respiration releases stored energy in glucose and converts it into usable energy!

Without that usable energy, our bodies would not be able to complete important processes like cell transport, growth, development, and repair!

I understand!

I have no clue!

I’m getting there!

​Log into clever
and flocabulary
before choosing
your option!

Exit Ticket!

How is energy released from the ATP molecule?

a. The breaking off of a phosphate unit from the tail
of the ATP molecule.

b. The uptake of an additional phosphate unit onto
the tail of an ADP molecule.

c. The storage of energy into molecules such as
lipids and starches.

d. The reaction of the ribose sugar and a molecule
of water.

[e-mail]

404.334.4790 x2036

Exit Ticket!

How is energy released from the ATP molecule?

a. The breaking off of a phosphate unit from the tail of the ATP molecule.

b. The uptake of an additional phosphate unit onto
the tail of an ADP molecule.

c. The storage of energy into molecules such as
lipids and starches.

d. The reaction of the ribose sugar and a molecule
of water.

[e-mail]

404.334.4790 x2036