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Unit 3 Cells Unit 3 Cells Ch. 8 Photosynthesis Ch. 8 Photosynthesis

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Page 1: Unit 3 Cells Ch. 8 Photosynthesis. Autotrophs & Heterotrophs o Plants & some other types of organisms are able to use light energy from the sun to produce

Unit 3 CellsUnit 3 Cells

Ch. 8 PhotosynthesisCh. 8 Photosynthesis

Page 2: Unit 3 Cells Ch. 8 Photosynthesis. Autotrophs & Heterotrophs o Plants & some other types of organisms are able to use light energy from the sun to produce

Autotrophs & Heterotrophs

Plants & some other types of organisms are able to use light energy from the sun to produce food

Autotrophs - organisms, (such as plants), that can make their own food

Page 3: Unit 3 Cells Ch. 8 Photosynthesis. Autotrophs & Heterotrophs o Plants & some other types of organisms are able to use light energy from the sun to produce

Autotrophs & Heterotrophs

Heterotrophs - obtain energy from the foods they consume (eat)

Page 4: Unit 3 Cells Ch. 8 Photosynthesis. Autotrophs & Heterotrophs o Plants & some other types of organisms are able to use light energy from the sun to produce

Chemical Energy & ATP

Living things use chemical fuels as well Adenosine triphosphate (ATP) - one of

the principal chemical compounds that cells use to store & release energy

Page 5: Unit 3 Cells Ch. 8 Photosynthesis. Autotrophs & Heterotrophs o Plants & some other types of organisms are able to use light energy from the sun to produce

Investigating Photosynthesis

Photosynthesis - process where plants use energy of sunlight to convert water & carbon dioxide into high-energy carbohydrates (sugars & starches), & oxygen (waste product)

Page 6: Unit 3 Cells Ch. 8 Photosynthesis. Autotrophs & Heterotrophs o Plants & some other types of organisms are able to use light energy from the sun to produce

The Photosynthesis Equation

6CO2 + 6H2O (light) C6H12O6 + 6O2

Carbon dioxide + water (light) sugars + oxygen

Page 7: Unit 3 Cells Ch. 8 Photosynthesis. Autotrophs & Heterotrophs o Plants & some other types of organisms are able to use light energy from the sun to produce

Light & Pigments

In addition to water & carbon dioxide, photosynthesis requires light & chlorophyll, a molecule in chloroplasts

Pigments - light-absorbing molecules that gather the sun’s energy

Chlorophyll - the plants principle pigment 2 main types: chlorophyll a & chlorophyll b

Page 8: Unit 3 Cells Ch. 8 Photosynthesis. Autotrophs & Heterotrophs o Plants & some other types of organisms are able to use light energy from the sun to produce

Inside a Chloroplast

Photosynthesis takes place in chloroplasts Thylakoids - saclike photosynthetic membranes

where chlorophyll & other pigments are organized into clusters of photosystems

Photosystems - the light-collecting units of the chloroplast

Page 9: Unit 3 Cells Ch. 8 Photosynthesis. Autotrophs & Heterotrophs o Plants & some other types of organisms are able to use light energy from the sun to produce
Page 10: Unit 3 Cells Ch. 8 Photosynthesis. Autotrophs & Heterotrophs o Plants & some other types of organisms are able to use light energy from the sun to produce

Factors Affecting Photosynthesis

Water is a raw material of photosynthesis, a shortage could slow or stop photosynthesis

Light is required for photosynthesis It also depends on enzymes which only function

between 0 & 35C Temps above or below this range may damage the

enzymes, slowing the rate of photosynthesis


Where it Starts--Photosynthesis Obtain energy Autotrophs Heterotrophs Metabolism—biochemical processes release energy Photosynthesis Cellular

Ecosystems. Feeding level vocab Producers are the autotrophs of an environment Mostly by photosynthesis Consumers are the heterotrophs of the environment

Autotrophs & Photosynthesis

PHOTOSYNTHESIS Harnessing Energy. Heterotrophs and Autotrophs All living organisms require organic compounds and energy for their cells. Depending on

The Working Cell: Energy from Food Chapter 7 Sunlight Powers Life Autotrophs: self-feeders –Photosynthesis –Producers Heterotrophs: other eaters –Consumers

PHOTOSYNTHESIS - Norwell Public Schools / Overvie & HETEROTROPHS • From where does the energy that living things need come? •-• Plants AUTOTROPHS & HETEROTROPHS

Ch. 9 Cellular Respiration Living cells require energy from outside sources Heterotrophs and autotrophs Photosynthesis generates O 2 and organic molecules,

PHOTOSYNTHESIS. “LIFE from LIGHT and AIR” PRODUCERS/AUTOTROPHS – CONVERT LIGHT ENERGY TO CHEMICAL ENERGY; SYNTHESIZE ORGANIC MOLECULES CONSUMERS/HETEROTROPHS

Chapter 5: Obtaining energy and nutrients for life Heterotrophs and autotrophs Autotrophs and photosynthesis Heterotrophs and food The digestive system

Photosynthesis. Two main groups of living things: Plants Animals In science we call them…. Autotrophs Heterotrophs

Nanoflagellates (mixotrophs, heterotrophs and autotrophs

PHOTOSYNTHESIS: USING LIGHT TO MAKE FOOD. PHOTOSYNTHESIS: USING LIGHT ENERGY TO MAKE FOOD HETEROTROPHS VS AUTOTROPHS? AUTOTROPHS (A.K.A ?) – DEFINITION?

Photosynthesis. Review the following terms: –Autotrophs and heterotrophs –The structure of chloroplasts and cell membrane –Electron transport chain –The

Ecosystems and Human Interferences Chapter 48. Outline Biotic Components Biotic Components Autotrophs Autotrophs Heterotrophs Heterotrophs Energy Flow

Photosynthesis Chapter 8. 8-1: Energy & Life What is energy? The ability to do work. What is the difference between autotrophs & heterotrophs? Autotrophs

Photosynthesis Chapter 9. Plant Kingdom -produce most of the food in the biosphere - Autotrophs: make their own food - Heterotrophs: obtain food from

Energy Transfer in Ecosystem Vocabulary Trophic = nutrition –Autotrophs –Heterotrophs

Chapter 8 Photosynthesis. Autotrophs vs. Heterotrophs Autotrophs are organisms that can make their own food ◦ Use light energy from the sun to produce

Photosynthesis. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other

Energy Autotrophs & Heterotrophs | ATP | Photosynthesis & Respiration Overview

Photosynthesis. Autotrophs and Heterotrophs All life on Earth depends on the ____________ through the ecosystem. The source of this energy is the ____

Photosynthesis Chapter 10 Energy source Autotrophs: Producers Make own organic molecules Heterotrophs: Consumers

PHOTOSYNTHESIS Chapter 10. BASIC VOCABULARY Autotrophs – producers; make their own “food” Heterotrophs – consumers; cannot make own food

Photosynthesis!. Obtaining NRG Autotrophs Use NRG from the sun to make organic compounds Heterotrophs Must get NRG from food instead of directly

Photosynthesis. Energy & Life Energy, energy, ENERGY! Autotrophs vs. heterotrophs

Photosynthesis. Autotrophs and Heterotrophs Autotrophs are organisms that make their own food Heterotrophs are organisms that need to ingest food to obtain

Chapter 16 Microbial Life: Prokaryotes and Protists –autotrophs, algae, produce food by photosynthesis, –heterotrophs, protozoans, eat bacteria and other protists, –heterotrophs

Where It Starts: Photosynthesis Chapter 5. Sunlight and Survival Autotrophs use nonliving sources to build their own food Heterotrophs feed on living

Autotrophs= producers: organisms that use photosynthesis to make food Heterotrophs= consumers: organisms that must eat other organisms to get their energy

Cellular Metabolism. Autotrophs and Heterotrophs Autotrophs are organisms that make their own glucose. How Organisms Obtain Energy Heterotrophs are

Chapter 8 Photosynthesis. Trophic Roles Autotrophs produce organic molecules from CO 2 & inorganic raw materials producers plants Heterotrophs consumers

Photosynthesis. Autotrophs vs. Heterotrophs Autotrophs Organisms that use the sun’s energy to make their own food Plants Some bacteria Heterotrophs Organisms

Photosynthesis Chapter 8. Autotrophs vs. Heterotrophs All living things depend upon energy to carry out lifes processes. Plants and some other types

Photsynthesis/Respiration. Radiant energy carbohydrates Respiration How energy flows through the ecosystem Photosynthesis Heterotrophs Autotrophs heat

Cellular Respiration Chapter 7. Obtaining Food Autotrophs – producers – photosynthesis Autotrophs – producers – photosynthesis Heterotrophs – consumers