Biology Midterm 1-5 Review

Front

What did Miller/Urey's experiment demonstrate about the building blocks of life?

Back

The building blocks of life (amino acids) could be formed from inorganic compounds.

Front

What is 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

How do the circulatory system and nervous system interact in the body?

Back

They interact to maintain homeostasis.

Front

What are producers in an ecosystem?

Back

Producers are organisms, such as plants, that are able to perform photosynthesis and are also called autotrophs.

Front

Which of the following is an abiotic factor?

Back

Water is an abiotic factor.

Front

Define homeostasis in biological systems.

Back

Homeostasis is the process by which biological systems maintain a stable internal environment despite external changes.

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 role do decomposers play in an ecosystem?

Back

Decomposers break down dead organic material, returning nutrients to the soil and helping to recycle matter in the ecosystem.

Front

What is the difference between biotic and abiotic factors?

Back

Biotic factors are living components of an ecosystem, while abiotic factors are non-living components.

Front

What is an autotroph?

Back

An autotroph is an organism that can produce its own food from inorganic substances, typically through photosynthesis or chemosynthesis.