Cell Structure and Function Quiz

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Who observed the first cells and when?

Robert Hooke observed the first cells in 1665.

What is the Cell Theory and who proposed it?

The Cell Theory states that all living things are made up of cells, cells are the smallest working unit of all living things, and all cells come from preexisting cells through cell division. It was proposed by Matthais Schleiden and Theodor Schwann in 1839.

What are the defining characteristics of an animal cell?

An animal cell is a type of eukaryotic cell that lacks a cell wall and has a true, membrane-bound nucleus along with other cellular organelles. It is generally smaller than plant cells and has an irregular shape.

What are the functions that all organisms, whether unicellular or multicellular, must accomplish?

<p>All organisms must accomplish functions such as uptake and processing of nutrients, excretion of wastes, response to environmental stimuli, and reproduction among others.</p> Signup and view all the answers

How do animal cells differ from plant cells?

<p>Animal cells lack a cell wall, have a true, membrane-bound nucleus, and are generally smaller with an irregular shape, while plant cells have a cell wall, a large central vacuole, and are typically rectangular or square in shape.</p> Signup and view all the answers