BIOLOGY SEMESTER REVIEW 3

Presentation

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Biology

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9th Grade

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Practice Problem

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Medium

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NGSS

MS-LS2-3, HS-ESS2-2, MS-LS1-6

Standards-aligned

Stacy King

Used 29+ times

FREE Resource

7 Slides • 5 Questions

BIOLOGY SEMESTER REVIEW 3

Recycling in the Biosphere

Biogeochemical cycle- connects bio, chem, and geo in the biosphere

Water Cycle

water movement between the ocean, atmosphere, and land

evaporation- liquid to gas

transpiration- evaporation from leaves

Carbon Cycle

biological- photosynthesis, respiration
Geochemical- volcanic, erosion
Human activity- mining, burning resources

Nitrogen Cycle

nitrogen is required to build amino acids that build proteins
nitrogen fixation- nitrogen gas to ammonia into nitrates
denitrification- nitrates to gas

Phosphorus Cycle

molecules such as DNA and RNA
does not enter the atmosphere

Nutrient Limitation

Primary Productivity
The rate at which organic matter is created by producers
Limiting nutrient
Ecosys limited by a single nutrient
Algal Blooms
Excess nutrients imbalance producers/consumers

Multiple Choice

As part of the nitrogen cycle, animals acquire some amino acids by doing which of the following?

BREATHING AIR

EATING PLANTS

DRINKING WATER

PRODUCING WASTE

Multiple Choice

Saprophytes are fungi that feed on dead and decomposing organisms. They secrete enzymes that digest components of cell walls, such as cellulose and lignin. Which statement explains why these fungi are an important part of the biogeochemical cycle?

Saprophytes perform gas exchange that assists the cellular activities of autotrophs.

Saprophytes extract minerals from living tissue to recycle them back into the soil.

Saprophytes transport nutrients through the xylem and phloem in autotrophs.

Saprophytes return organic material to the soil for use by living organisms.

Multiple Choice

What is happening at 1?

respiration: releasing CO2

decomposing CO2 in the soil

photosynthesis: absorbing CO2

turning CO2 from the atmosphere into organic molecules

Multiple Choice

What is the recycling of chemical elements throughout an ecosystem called?

energy

phosphorus cycle

biogeochemical cycle

trophic level

Multiple Choice

Deforestation by burning has been described as a "double whammy" to the environment, meaning it has 2 negative impacts. Why is this description accurate?

Forest burning releases CO₂ while decreasing oxygen, which disrupts cycles

Deforestation reduces the amount of oxygen in the atmosphere, which depletes the ozone layer

Forest clearing is often followed by land development, which often leads to increased noise pollution

Deforestation increases the number of plant and animal species by destroying habitat

BIOLOGY SEMESTER REVIEW 3

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