Download The Chemistry of Life 1

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Document related concepts
no text concepts found
Transcript
Chemistry 24.1
Slide
1 of 16
24.1
A Strategy for Life
Air is composed mainly of nitrogen
(N2) and oxygen (O2). It is thought
that Earth’s crust changed over
time as a result of photosynthesis,
a process carried out by green
organisms such as these
cyanobacteria. You will learn about
the characteristics of living things,
including the organisms in which
photosynthesis occurs.
© Copyright Pearson Prentice Hall
Slide
2 of 16
24.1
A Strategy for Life
>
The Structure of Cells
The Structure of Cells
What are the two major types of cells
that occur in nature?
Slide
3 of 16
© Copyright Pearson Prentice Hall
24.1
A Strategy for Life
>
The Structure of Cells
Two major cell types occur in
nature: the cells of bacteria, known
as prokaryotic cells, and the cells of
all other organisms, known as
eukaryotic cells.
Slide
4 of 16
© Copyright Pearson Prentice Hall
24.1
A Strategy for Life
>
The Structure of Cells
Prokaryotic cells were present on Earth at least
3 billion years ago.
Slide
5 of 16
© Copyright Pearson Prentice Hall
24.1
A Strategy for Life
>
The Structure of Cells
Eukaryotic cell did not appear until about 1
billion years ago.
Slide
6 of 16
© Copyright Pearson Prentice Hall
A Strategy for Life
>
The Structure of Cells
Animation 29
Explore the complexity of chemicals essential
to all life.
Slide
7 of 16
© Copyright Pearson Prentice Hall
24.1
A Strategy for Life
>
The Energy and Carbon Cycle
The Energy and Carbon Cycle
What compound is reduced during
photosynthesis? What compounds are
formed?
Slide
8 of 16
© Copyright Pearson Prentice Hall
24.1
A Strategy for Life
>
The Energy and Carbon Cycle
Within the chloroplast is a light-capturing system
that converts light energy into chemical energy
by a process called photosynthesis.
Slide
9 of 16
© Copyright Pearson Prentice Hall
24.1
A Strategy for Life
>
The Energy and Carbon Cycle
Photosynthesis uses the energy from
sunlight to reduce carbon dioxide to
compounds that contain C—H bonds,
mainly in the form of glucose (C6H12O6).
Slide
10 of 16
© Copyright Pearson Prentice Hall
24.1
A Strategy for Life
>
The Energy and Carbon Cycle
Both plants and animals get energy by
unleashing the energy stored in the chemical
bonds of carbon compounds. The nutrients are
oxidized back to carbon dioxide and water in the
process.
Slide
11 of 16
© Copyright Pearson Prentice Hall
24.1
A Strategy for Life
>
The Energy and Carbon Cycle
Slide
12 of 16
© Copyright Pearson Prentice Hall
24.1 Section Quiz.
Assess students’ understanding
of the concepts in Section 24.1.
Continue to:
-or-
Launch:
Section Quiz
Slide
13 of 16
© Copyright Pearson Prentice Hall
24.1 Section Quiz.
1. All eukaryotic cells contain
a. cell walls.
b. bacteria.
c. organelles.
d. photosynthetic enzymes.
Slide
14 of 16
© Copyright Pearson Prentice Hall
24.1 Section Quiz.
2. One product of photosynthesis is
a. ethanol.
b. carbon dioxide.
c. oxygen.
d. water.
Slide
15 of 16
© Copyright Pearson Prentice Hall
24.1 Section Quiz.
3. Energy production within cells involves
a. the oxidation of glucose to carbon dioxide.
b. the oxidation of glucose to carbon.
c. the reduction of glucose to carbon dioxide.
d. the reduction of glucose to carbon.
Slide
16 of 16
© Copyright Pearson Prentice Hall
END OF SHOW