Biology EOC Review

Front

What is the independent variable in an experiment?

Back

The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable. In the plant growth experiment, the independent variable is the type of liquid given to the plants.

Front

What does exponential growth mean in biology?

Back

Exponential growth refers to a growth pattern where the quantity increases at a constant rate per time period, leading to a rapid increase in population size. This is often represented graphically as a J-shaped curve.

Front

What are proteins made of?

Back

Proteins are made of amino acids, which are organic compounds composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.

Front

What are the three components of a nucleotide?

Back

A nucleotide is made up of three parts: a sugar, a phosphate group, and a nitrogenous base.

Front

What percentage of energy is typically transferred from one trophic level to the next in an ecosystem?

Back

Typically, only about 10% of the energy is transferred from one trophic level to the next in an ecosystem.

Front

Define the term 'trophic level'.

Back

A trophic level is a position in a food chain or food web, representing the flow of energy and nutrients through an ecosystem, such as producers, primary consumers, and secondary consumers.

Front

What is the role of producers in an ecosystem?

Back

Producers, such as plants and algae, are organisms that can make their own food through photosynthesis, forming the base of the food chain.

Front

Explain the concept of carrying capacity in ecology.

Back

Carrying capacity is the maximum number of individuals of a particular species that an environment can support sustainably, based on available resources.

Front

What is logistic growth?

Back

Logistic growth is a model of population growth that describes how a population grows rapidly at first, then slows as it approaches the carrying capacity of its environment, resulting in an S-shaped curve.

Front

What is the difference between emigration and immigration?

Back

Emigration is the act of leaving one's resident country to settle elsewhere, while immigration is the act of coming to live permanently in a foreign country.