Unit 1 Biology

Front

What is the role of water in temperature regulation in the body?

Back

Water absorbs a lot of heat, but only increases a little in temperature, helping to prevent overheating.

Front

What is the optimal pH for enzyme activity?

Back

Enzymes typically have an optimal pH at which they function best, which can vary depending on the enzyme.

Front

What is chemical evolution?

Back

Chemical evolution is a scientific theory that describes the origin of life on Earth, suggesting that life evolved from simple organic molecules.

Front

What is the first event necessary for life to evolve according to chemical evolution?

Back

The synthesis of organic molecules is considered the first necessary event for life to evolve.

Front

What is an 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.

Front

What can water NOT dissolve?

Back

Water cannot dissolve nonpolar compounds.

Front

What is an enzyme?

Back

An enzyme is a biological catalyst that speeds up chemical reactions in living organisms.

Front

What is the function of the plasma membrane?

Back

The plasma membrane regulates what enters and exits the cell, maintaining homeostasis.

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 are ionic compounds?

Back

Ionic compounds are formed from the electrostatic attraction between positively and negatively charged ions.