lesson overview lesson overview energy and life reciprocal teaching helps you create your own...

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

RECIPROCAL TEACHING

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Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Predict

What will happen or what will we learn?

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Clarify

Reread or discuss words or points that were not clear.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Question

After reading, ask a question for others to answer.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Summarize

Tell the important ideas that we read.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Lesson OverviewLesson Overview8.1 Energy and Life8.1 Energy and Life

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Chemical Energy and ATPEnergy is the ability to do work.

Your cells are busy using energy to build new molecules, contract muscles, and carry out active transport.

Without the ability to obtain and use energy, life would cease to exist.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Chemical Energy and ATP

One of the most important compounds that cells use to store and release energy is adenosine triphosphate (ATP).

ATP consists of adenine, a 5-carbon sugar called ribose, and three phosphate groups.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Storing Energy

Adenosine diphosphate (ADP) looks almost like ATP, except that it has two phosphate groups instead of three. ADP contains some energy, but not as much as ATP.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Using Biochemical Energy

One way cells use the energy provided by ATP is to carry out active transport.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Using Biochemical Energy

ATP powers movement, providing the energy for motor proteins that contract muscle and power the movement of cilia and flagella.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Using Biochemical Energy

Energy from ATP powers the synthesis of proteins and responses to chemical signals at the cell surface.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Using Biochemical Energy

ATP is not a good molecule for storing large amounts of energy over the long term.

It is more efficient for cells to keep only a small supply of ATP on hand.

Cells can regenerate ATP from ADP as needed by using the energy in foods like glucose.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Heterotrophs and Autotrophs

Organisms that obtain food by consuming other living things are known as heterotrophs.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

Heterotrophs and AutotrophsOrganisms that make their own food are called autotrophs.

Plants, algae, and some bacteria are able to use light energy from the sun to produce food. The process by which autotrophs use the energy of sunlight to produce high-energy carbohydrates that can be used for food is known as photosynthesis.

Lesson OverviewLesson Overview Energy and LifeEnergy and Life

REVIEW Questions1. T or F Without the ability to obtain and use energy, life would cease

to exist.2. One of the most important compounds that cells use to store and

release energy is _______?3. What are the three parts to the structure of ATP?

1. What characteristic of ATP makes it exceptionally useful as a energy source?

1. ATP and ______ work together like a rechargeable battery.2. ATP is not good at storing energy _________________.3. Organisms that obtain food by consuming other living things are

known as __________________.4. Organisms that make their own food are called

___________________.

ATP

Adenine, Ribose and 3 Phosphate groups

It is rechargeable

ADPLong Term

Heterotrophs

Autotrophs