Unit 8: Introduction to Ecology

Question 1

Biotic Factors

Answer 1

Living organisms in an ecosystem
ex. trees, animals, plants, leaves, poop, bones

Question 2

Abiotic Factors

Answer 2

Nonliving organisms in an ecosystem
ex. rocks, water, sun, clouds, temperature

Question 3

What are the levels of an ecosystem (after organ systems)?

Answer 3

Biosphere, ecosystem, community, population, organism

Question 4

Organism

Answer 4

Individual living thing

Question 5

Population

Answer 5

Group organisms of one type that live in the same area

Question 6

Community

Answer 6

Popultations that live together along with other living things

Question 7

Ecosystem

Answer 7

Community + its nonliving surroundings

Question 8

Biosphere

Answer 8

Part of Earth that contains all ecosystems

Question 9

Autotrophs

Answer 9

Self-feeding organisms

Question 10

Carbohydrates

Answer 10

• Store energy
• Provide structure/building material for plants
• Made during photosynthesis
• Energy stored in “bonds” between molecules

Question 11

Photosynthesis

Answer 11

Chemical reaction autotrophs use sun’s energy made carbs

Question 12

What is the process of photosynthesis?

Answer 12

• Carbon dioxide enter through leaves
• Water enters through roots
• Sunlight absorbed though plant
• Plant releases oxygen + sugars

Question 13

What is the chemical equation of photosynthesis?

Answer 13

CO(2) + H(2)O –> C(6)H(12)O(6) + O(2)
Refer to Photosynethesis Lesson worksheet

Question 14

What happens to th rate of photosynthesis if light intensity is inceased?

Answer 14

Light energy increased photosynthesis faster because light energy needed break molecules bonded together

Question 15

Why do we need to convert carb energy to ATP?

Answer 15

Carb energy = not usuable energy to Cellular Respiration converts carbs (glucose) to ATP!!

Question 16

Cellular Respiration Chemical Equation

Answer 16

Oxygen, glucose –> carb dioxide, water vapor (ATP)
Reverse of photosynthesis

Question 17

Why do we breathe out more carbon dioxide when we exercise?

Answer 17

Exercise = need more energy –> breathe more
Breathe more oxygen so burn more glucose to turn into ATP –> do more cellular respiration

Question 18

Do plants perform cellular respiration like animals do?

Answer 18

Plants perform photosynthesis in light
Plants perform cellular respiration in the dark

Question 19

What is the relationship between animals and plants?

Answer 19

Rely on each other through interdependence to keep gas levels stable

Question 20

Why is the total amount oxygen and carbon dioxide the same in the equation?

Answer 20

Reverse of each other