Biology Midterm Flashcard

Front

What are qualitative observations?

Back

Qualitative observations are descriptions that involve characteristics such as color, texture, and appearance, rather than numerical measurements.

Front

What is an enzyme?

Back

An enzyme is a biological catalyst that works in living cells to speed up chemical reactions.

Front

What can be inferred if a solution conducts electricity and turns litmus paper blue?

Back

The solution contains a base.

Front

What is the dependent variable in the statement: 'If you increase the amount of spinach you eat, then you will increase the iron in your blood'?

Back

The dependent variable is the increase in the amount of iron in your blood.

Front

What is the name of HCl?

Back

Hydrochloric acid.

Front

What are quantitative observations?

Back

Quantitative observations are measurements that involve numbers and can be counted or measured.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up a chemical reaction without being consumed in the process.

Front

What is the pH range of acidic solutions?

Back

The pH range of acidic solutions is less than 7.

Front

What is the pH range of basic solutions?

Back

The pH range of basic solutions is greater than 7.

Front

What is the difference between an acid and a base?

Back

An acid donates protons (H+) in a solution, while a base accepts protons.