Unit 1 Test Sci Method-Properties and Chemistry of Life

Front

What is an enzyme?

Back

A biological catalyst that speeds up chemical reactions in living organisms and can be used repeatedly.

Front

What is a scientific hypothesis?

Back

A testable statement or prediction about the relationship between variables.

Front

What is the purpose of keeping variables constant in an experiment?

Back

To ensure that the results are due to the independent variable being tested.

Front

What type of bond forms between the negative oxygen atom of one water molecule and the positive hydrogen atom of another?

Back

Hydrogen bonds.

Front

What property of water allows it to dissolve many substances?

Back

It is a polar molecule.

Front

What is the definition of a polar molecule?

Back

A molecule with a partial positive charge on one side and a partial negative charge on the other, leading to unequal sharing of electrons.

Front

What is the role of a control group in an experiment?

Back

To provide a baseline for comparison against the experimental group.

Front

What is the difference between an independent variable and a dependent variable?

Back

The independent variable is manipulated by the researcher, while the dependent variable is measured in response.

Front

What is the significance of the scientific method?

Back

It provides a systematic approach for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is a covalent bond?

Back

A chemical bond formed by the sharing of electrons between atoms.