Jefferson Bio Fall Semester Review

Front

What happens to the nitrogen in an organism's body when it dies?

Back

The nitrogen is released by the action of decomposers.

Front

What is the difference between the sugars in DNA and RNA?

Back

DNA has a deoxyribose sugar while RNA has a ribose sugar.

Front

What is an ecosystem?

Back

A collection of organisms that make up a community as well as all of the nonliving aspects of the environment.

Front

What process transforms carbon into a compound with more chemical energy?

Back

Photosynthesis.

Front

Which organisms in the food chain have the least available energy?

Back

Shark.

Front

What is the role of decomposers in the nitrogen cycle?

Back

Decomposers break down dead organisms, releasing nitrogen back into the soil.

Front

Define a nucleotide.

Back

A nucleotide is the basic building block of nucleic acids, consisting of a sugar, a phosphate group, and a nitrogenous base.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Front

What is the difference between a population and a community?

Back

A population is a group of individuals of the same species living in a specific area, while a community includes all the different species living in that area.

Front

What is primary production?

Back

Primary production is the process by which autotrophs (like plants) convert light energy into chemical energy in the form of glucose.