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Biology Ch. 3
Question | Answer |
---|---|
organisms that get energy from consuming living things | heterotrophs |
organisms that make their own food | autotrophs |
What is an example of a heterotroph? | animals and mushrooms |
What is an example of a autotroph? | plants, algae, some bacteria |
process of capturing energy from sunlight to produce glucose(sugar-food) | photosynthesis |
What organelle does photosynthesis take place? | chloroplast |
pigment inside the thylakoid that reflects green and absorbs all other colors | chlorophyll |
jelly fluid inside chloroplast | stroma |
**STUDY AND MEMORIZE THE CHEMICAL EQUATION FOR PHOTOSYNTHESIS** | |
What are the two reactions for photosynthesis? | Light Dependent Reaction and Light Independent Reaction |
takes place in thylakoid; takes oxygen out of water; oxygen is the byproduct(requires light) | Light Dependent Reaction |
takes place in stroma; takes carbon dioxide from atmosphere to produce sugar | Light Independent Reaction (Calvins Cycle) |
What affects photosynthesis? | temperature, amount of light, and access to water |
When does photosynthesis occur? | when all components are available |
What type of cells does photosynthesis take place in? | Eukaryotic cells |
What is the energy result to photosynthesis? | Glucose |
process that releases energy from food in the presence of oxygen | cellular respiration |
Where does cellular respiration occur? | in and around mitochondria |
**STUDY AND MEMORIZE THE CHEMICAL EQUATION FOR CELLULAR RESPIRATION** | |
What are the 3 main stages of cellular respiration? | Glycolysis, Krebs Cycle, and Electron Transport Chain |
breakdown of glucose | Glycolysis |
What occurs in glycolysis? | Glucose Lyse-breakdown, produces ATP quickly, doesn't require oxygen, occurs in cytoplasm, produces 2 ATP molecules, and Produces pyruvic acid |
uses pyruvic acid from glycolysis | Krebs Cycle(Citric Acid Cycle) |
What occurs in the Krebs Cycle? | produces 2 ATP molecules, produces MGN energy electrons, and occurs in mitochondria |
uses electrons from Krebs Cycle | Electron Transport Chain |
What occurs in the Electron Transport Chain? | Produce 32 ATP, requires oxygen, occurs in membrane of mitochondria |
process that releases energy from food in the absence of oxygen | fermentation |
supplies enough ATP to last 90 seconds | Lactic Acid Fermentation |
short burst of energy, for longer periods of exercise the body needs to go through cellular respiration to make ATP | Lactic Acid Fermentation |
requires oxygen | aerobic |
no oxygen needed | anaerobic |
When does cellular respiration happen? | during digestion |
What types of cells does cellular respiration take place in? | Plant and animal cells |
What is the energy result of Cellular Respiration? | 36-38 ATP |
What are the most known species? | microorganisms(bacteria) |
Mostly what have been named? | insects |
individual of a species | organism |
group of individuals of a species that live in an area | population |
group of populations in the same area | community |
a community interacting with the environment | ecosystem |
living organisms | biotic factors |
nonliving organisms | abiotic factors |
a region that organisms are adapted to living | biome |
all life on Earth and all parts where life exists | biosphere |
different species in a specific area | biodiversity |
a sequence that links species through feeding relationships | food chain |
eat producers | herbivore |
eat consumers | carnivore |
eat both producers and consumers | omnivore |
eat and break down organic material | decomposer |
feed on waste or dead organisms | detritivore |
shows how energy is transferred through organisms | trophic pyramid |
What are the levels of the trophic pyramid?(bottom to top) | primary producers-primary consumers-secondary consumer-tertiary consumer-quatenary consumer |
How is energy lost at every level? | metabolism |
its chemical processes that are needed to maintain life | metabolism |
What is energy lost as? | heat |
How much energy can be lost from one level to the next? | 10% |
driven by solar energy and gravity | water cycle(hydrological cycle) |
rain, sleet, snow | precipitation |
water is heated and turns to gas | evaporation |
water is cooled(gas to liquid) | condensation |
water that seeps into the ground | infiltration |
precipitation occurs too fast, can't absorb | runoff |
water leaves plants as gas | transpiration |
What are that effects of humans activities on water cycle? | withdrawing large amounts of fresh water and polluting surface and underground water |
terrestrial producers remove carbon dioxide from atmosphere | carbon cycle |
What do producers use to convert carbon dioxide into glucose and oxygen? | photosynthesis |
dead plants and organic matter compressed between rocks | fossil fuels |
takes millions of years to form | fossil fuels |
What are the effects of human activities on Carbon Cycle? | clearing trees and adding large amounts of carbon dioxide by burning fossil fuels |
bacteria recycle nitrogen through atmosphere | nitrogen cycle |
most abundant gas in the atmosphere | nitrogen |
How much nitrogen is in the atmosphere? | 78% |
most important part of proteins and nucleic acids | nitrogen |
What are the two ways nitrogen gets "fixed"? | lightning and nitrogen fixing bacteria |
convert organic material into ammonia | ammonification |
converting ammonia back into gas | denitrification |
What are the human activities on Nitrogen Cycle? | burn fuel at high temps, comes back down as acid rain; livestock and waste and fertilizers runoff-depletes ozone layer |
essential to living organisms | phosphorus cycle |
runoff from rocks and minerals | phosphorus |
**MEMORIZE THE CYCLES** |