A ______________ is a quality or feature of something or someone.

A ______ is an idea based on scientific knowledge that explains something.

__________ cells HAVE a nucleus and other membrane-bound organelles. They are larger.

___________ cells DO NOT have a nucleus and other membrane-bound organelles. They are smaller.

What is the process of watching someone or something carefully to get information called?

What is an organism's ability to maintain steady internal conditions called?

True or false:

Living organisms that are made up of more than one cell are called multicellular.

True or false:

Reproduction is the ability to maintain steady internal conditions.

True or false:

In general, prokaryotic cells are larger than eukaryotic cells.

True or false:

Food and energy and common ancestry are ways to classify organisms.

True or false:

A cytoplasm is a stiff structure outside the cell membrane.

What organelle is highlighted in yellow?

What organelle is highlighted in black?

What organelle is highlighted in blue?

What organelle is highlighted in pink?

The _________ is a fluid inside the cell that contains salts and other molecules.

Vacuoles store water, waste materials, and what else?

These power the cell by carrying out chemical reactions.

The _______ is the part of a eukaryotic cell that directs cell activities and contains DNA.

These are made on small organelles called ribosomes.

Which of the following is NOT a characteristic of living things?

Microscopes allow us to see small things up close. They also allow us to explore different organisms.

Who built a microscope 300 years ago?

This plant organelle uses light energy and makes food called glucose.