unicellular organisms
A one-celled organism, like this example often found in pond water
amoeba
Multicellular organisms are made of this
cells
This cell structure controls what enters and exits the cell
cell membrane
This German scientist, known as the "Father of Microbiology," improved the microscope
Anton van Leeuwenhoek
This process, when yeast grows and ferments, is used in bread-making
fermentation
This organelle in a unicellular organism controls all its functions
nucleus
Humans, plants, and animals belong to this group: unicellular or multicellular?
multicellular
Multicellular organisms often have specialized cells with these structures for energy production.
mitochondria
cells are the basic units of life, and ____.
cells come from other cells
The largest known single cell is the unfertilized egg of this large bird.
ostrich
Unicellular organisms belong to this kingdom that includes bacteria
monera
Cells in a multicellular organism can have these unique roles, such as nerve or muscle cells
specialized cells
Unicellular organisms have to perform all of these for survival, which are shared with multicellular organisms
life functions
This invention allowed scientists to study cells in greater detail
microscope
This tiny organism is a unicellular protist that uses hair-like cilia to move
paramecium
Some unicellular organisms move by using this "tail-like" structure
flagella/ flagellum
All the cells in a multicellular organism work together to maintain this internal balance
homeostasis
Both types of cells have this gel-like substance where cell parts are suspended
cytoplasm
This part of cell theory explains how cells come from other _____.
other cells
plants, animals, fungi, and protists are examples of organisms made of this number of cells
multicellular
unicellular organism divides into two identical copies of itself
binary fission
this term describes the organization levels from smallest to largest: cell, tissue, _____.
organ
This organelle, found in plant cells, is used to convert sunlight into energy
chloroplast
All living things are made of cells, which are called the basic units of ______
life
These organisms are extremely small and can be unicellular or multicellular, yet lack organized nuclei and membrane-bound organelles
bacteria