Energy. All of Earth’s energy comes from the Sun . Nature of Energy. Living organisms need energy for growth and movement. The Law of Conservation of Energy. Energy can be neither created nor destroyed it can only be converted from one form to another. Energy conversions.
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Living organisms need energy for growth and movement.
6H2O + 6CO2 ----------> C6H12O6+ 6O2
Photosynthesis is a chemical reaction that happens in the leaf.
TO AIR OR USED FOR RESPIRATION
What are the reactants?
Where do they come from?
What are the products of the reaction?
USED BY PLANT
What happens to the products?
‘photo’ = LIGHT
Photosynthesis means building with Light
Green plants can make their own food from ……..… and ………..…
using energy in the form of ………………….
which is absorbed by chlorophyll in the ………………...
The end products of photosynthesis are ………. and ………….
The branch of biology that concerns interactions between organisms and their environments or habitats
Within the purview of ecology
Communities of organisms that interact with one another and with their physical environment, including sunlight, rainfall, and soil nutrients.
These region are called biomes. Some of these areas would be prairies, tropical rainforests, and deserts.
Biotic factors are living factors. Anything living OR THAT WAS ONCE LIVING is considered a biotic factor.
include plants, animals, fungi, microorganisms
Abiotic, meaning not alive, are nonliving factors that affect living organisms.
include air, water, soil, temperature, wind, source of energy (usually sun)
1. Producer (autotroph)
A producer is an organism that uses an outside energy source like the Sun to make energy-rich molecules.
Wolves can’t make their own food. They are consumers.
The Cape Buffalo can’t make its own food. It is a consumer.
2. Consumer (heterotroph)
There are several words that describe consumers…
There are 4 general types of consumers:
Herbivores – Plant eaters
Zebras eat grass. They are herbivores.
Cows are herbivores.
Carnivores – Meat Eaters – Eat other animals
Not all carnivores have razor sharp teeth.
Lions definitely eat meat!
Omnivores – Eat both plants and animals
Raccoons are omnivores. They eat both plants and animals.
While the panda’s digestive system is that of a carnivore, their diet consists of 99% bamboo.
Mushrooms and other fungi break-down dead decaying matter.
A food chain is a simple model of the feedingrelationship in an ecosystem.
mostly carnivores &
2nd level consumer
carnivores & omnivores
1st level consumer
green plants make their own energy from sunlight
When an owl eats a flying squirrel it uses about 90% of the calories to live—
move, digest, produce body heat, reproduce and escape from predators.
When a frog eats a cricket or a cricket eats a plant, they use 90% of those calories to move, digest, produce body heat, reproduce and escape from predators.
You might think that competition for resources would make it impossible for so many species to live in the same habitat. However, each species has different requirements for its survival. As a result, each species has its own niche. An organism’s niche is its role in its environment – how it obtains food and shelter, finds a mate, cares for its young, and avoids danger.
An organism’s niche includes how it avoids being eaten and how it finds or captures its food. Predators are consumers that capture and eat other consumers. The prey is the organism that is captured by the predator.
I.) Symbiosis – 2 or more species live together in a close, long-term association.
Charles Darwin’s theory of evolution (the idea that organisms change through time) challenged prevailing 19th-century notions of a static world.
• 1831-1836 trip around the world.
• Set out to document the “hand of God” in nature.
• Collected countless specimens and kept detailed notes.
Camouflage (use of color in a surrounding)
The chameleon can change its color to match its surroundings. Can you do that?
Chemical defenses(like venom, ink, sprays)
What is a Eukaryotic Cell
What is Multicellular?
Only one cell
More than one cell
What is a Heterotroph?
Make their own food
Do NOT make their own food
The branch of biology concerned with the grouping and naming of organisms
Archaea live in harsh environments and may represent the first cells to have evolved.
Sewage treatment plants, thermal vents, etc.
Thermophiles Yellowstone N.P. Hot Springs
Halophiles in Great Salt Lake, Utah
Eubacteria, some of which cause human diseases, are present in almost all habitats on earth.
Live in the intestines of animals
Many bacteria are important environmentally and commercially.
Plants ! The green stuff!
A flowering plant has both male and female parts.
The female part is called the pistil.
The male part is called the stamen.
Named for the number of seed leaves, or cotyledons.