Characteristics of Life
This characteristic means all living things are made of one or more cells.
What is organization?
These cells do NOT have a nucleus.
What are prokaryotic cells?
This organelle controls what enters and leaves the cell.
What is the cell membrane?
This structure is found in plant cells but not animal cells and provides support.
What is the cell wall?
A scientist looks at a sample and sees no cells. Based on cell theory, what can they conclude?
What is it is not living?
This characteristic involves keeping internal conditions stable.
What is homeostasis?
These cells have membrane-bound organelles.
What are eukaryotic cells?
This organelle is known as the “powerhouse of the cell.”
What is the mitochondria?
This organelle allows plants to make their own food.
What is the chloroplast?
A scientist observes cork under a microscope and names the tiny structures “cells.” Who is this scientist?
Who is Robert Hooke?
Breaking down food to release energy is an example of this characteristic.
What is metabolism?
This type of cell is always unicellular.
What are prokaryotic cells?
This organelle makes proteins.
What are ribosomes?
This structure stores water and helps maintain plant shape.
What is the central vacuole?
A scientist improved the microscope and was the first to observe living microorganisms like bacteria. Who is this scientist?
Who is Anton van Leeuwenhoek?
A sunflower turning toward light is an example of this characteristic.
What is response to stimuli?
This structure is found in eukaryotic cells but NOT in prokaryotic cells.
What is the nucleus?
This organelle modifies and ships proteins.
What is the Golgi apparatus?
Name ONE similarity between plant and animal cells.
What is they both have a nucleus/cell membrane/cytoplasm/etc.?
A student claims cells can form from nonliving matter. Which scientist’s work disproved this idea?
Who is Rudolf Virchow?
Why is a flame NOT considered alive even though it grows and uses energy?
What is it does not meet all 8 characteristics of life?
A cell has circular DNA and no organelles. What type is it?
What is a prokaryotic cell?
This organelle breaks down waste and old cell parts using enzymes.
What is the lysosome?
Name TWO differences between plant and animal cells.
What is plant cells have chloroplasts and a cell wall, animal cells do not?
Two scientists concluded that all plants and animals are made of cells. Who are they?
Who are Schleiden and Schwann?