UIL Science Oct 20 '18 Test

Front

What is a qualitative observation?

Back

A qualitative observation is a description that involves characteristics or qualities, such as color, smell, or texture, rather than numerical measurements.

Front

What is a quantitative observation?

Back

A quantitative observation is a measurement that involves numbers, such as height, weight, or the number of items.

Front

What part of an atom is negatively charged?

Back

Electron.

Front

What is the function of protons in an atom?

Back

Protons are positively charged particles that determine the atomic number and identity of an element.

Front

What phase of mitosis involves chromosomes lining up at the equator?

Back

Metaphase.

Front

What is DNA?

Back

DNA stands for deoxyribonucleic acid, which is the molecule that carries genetic information in living organisms.

Front

What does the prefix 'poly' mean in biology?

Back

The prefix 'poly' means 'many'.

Front

What is a polysaccharide?

Back

A polysaccharide is a carbohydrate made up of many sugar molecules bonded together.

Front

What is the role of chromosomes during cell division?

Back

Chromosomes ensure that DNA is accurately replicated and distributed during cell division.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells do not have a nucleus or membrane-bound organelles, while eukaryotic cells do.