NC Life Science Check-in Review

Vocabulary 1

100

what occurs when bacteria develop a tolerance to survive treatment with drugs that once killed them.

Bacteria Resistance

200

a cell organelle that stores chlorophyll and serves as the site for photosynthesis.

chloroplast 

300

an environment and all the organisms that live in that particular region.

Ecosystem

400

explains how populations can eventually evolve into new species through the acquisition of differing genetic code.

natural selection

500

1. particle that consists of a nucleic acid and a protein shell that requires a living cell in order to reproduce 

Virus

Vocabulary 2

100

a large group of microorganisms that can be harmful or helpful to other living things.

bacteria

200

an organism that obtains energy by breaking down the wastes of organisms or the remains of dead organisms.

Decomposer 

300

 the process of change over time that causes speciation.

evolution

400

the process in which a person is given a small dose of a weakened or inactivated virus that causes the disease in order to prevent the person from getting the real disease.

Vaccination

500

a model that shows the interconnected network of food chains within an ecosystem. 

food web

Life Science 1

100

What are two abiotic factors in a marine ecosystem?

water, sunlight, oxygen, sand

200

What are the reactants of photosynthesis?

carbon dioxide, water, sunlight 

300

• This process occurs when individuals with beneficial genetic variations are more likely to survive and reproduce in their environment.

Natural Selection

400

This process is the opposite of photosynthesis and it creates usable energy in the form of ATP.

Cellular Respiration 

500

What is carrying capacity? What are things that can affect the carrying capacity in an ecosystem?

Carrying capacity- The limit of organisms an ecosystem can hold.

Limiting factors- food availability, land availability, water source, predators

Life Science 2

100

Describe the flow of energy through a food chain. (What happens to the amount of energy the farther you go up the food chain?)

The amount of energy decreases by 90% as you move up the food chain. 

200

How are food webs and food chains different?

Food chains shows one flow of energy while a food web shows multiple flows of energy.

300

• When two populations compete for the same food or habitat in an ecosystem, this type of relationship exists between them.

Competition

400

• Approximately this percentage of energy is transferred from one trophic level to the next in an ecosystem.

10%

500

What is the difference between a mutualistic, parasitic and commensalistic relationship? Give an example of each

Mutualistic- Both benefit

Parasitic- One benefits at the expense of another 

Commensalistic- One benefits while the other is not harmed

Life Science 3

100

What is the major source of energy in an ecosystem?

Sun

200

This term describes a disease outbreak that spreads rapidly across a large geographic area and affects many countries

Pandemic

300

• This term describes the number of individuals of a species living in a specific area at a given time.

Carrying capacity 

400

• These preserved remains of ancient organisms provide evidence for evolution and help scientists understand the history of life.

Fossils

500

Write the equation for photosynthesis and label the reactants and products.

Sunlight + Water+ carbon dioxide = Oxygen + Glucose