Types of Cells
This type of cell has a nucleus and organelles enclosed by membranes.
What is a eukaryotic cell?
This scientist coined the term “cell” after observing cork under a microscope.
Who is Robert Hooke?
These subunits of cells are not considered alive themselves but together make up cells, the basic unit of life.
What are organelles?
This category of processes moves molecules from an area of high concentration to low concentration without using energy.
What is passive transport?
In a solution of this type, water moves into the cell, causing it to swell.
What is a hypotonic solution?
These cells make up the bodies of species such as mammals, birds, and reptiles and do not have a cell wall.
What is an animal cell?
This tenant of cell theory explains the base of the hierarchy for all living things.
What is "The cell is the basic unit of life"?
This organelle, found in eukaryotic cells, controls the cell’s activities and contains DNA.
What is the nucleus?
This category of processes moves molecules from an area of low concentration to high concentration and uses energy.
In a solution of this type, water moves out of the cell, causing it to shrink.
What is a hypertonic solution?
These cells have chloroplasts and a rigid cell wall made of cellulose.
What are plant cells?
This scientist added to cell theory by stating that all cells come from pre-existing cells.
Who is Rudolf Virchow?
Found in plant cells, this organelle contains water and dissolved solids and provides the pressure required for those cells to maintain their rigidity.
What is the central vacuole?
or
What is the large vacuole?
This type of diffusion involves the net movement of water across a membrane.
What is osmosis?
Red blood cells, when placed in this type of solution, would rush water into themselves causing them to burst.
What is a hypotonic solution?
These simple cells have inner and outer cell walls and include species such as Salmonella typhi.
What are prokaryotic cells?
This tenet of cell theory implies that simple and complex organisms all originate from a common source.
What is "All cells arise from pre-existing cells"?
What is a cell membrane?
This process allows cells to engulf large particles or fluids by wrapping the membrane around them for absorption. This requires energy.
This concept refers to the relative measurement of solute concentration from an object and its environment resulting in the net movement of water across its membrane from an area of higher concentration to an area of lower concentration.
What is tonicity?
These complex cells may be unicellular or part of a larger, multicellular organism. These cells store their DNA in the center of the cell and posses a cell membrane. They may or may not posses a cell wall.
What are eukaryotic cells?
This tenet of cell theory addresses the fundamental concept regarding living organisms as we know them currently. If a scientist were to discover an unknown lifeform on another planet, they would first consider this.
What is 'All living things are comprised of one or more cells'?
These small organelles are responsible for breaking down waste and cellular debris using enzymes and are primarily found in animal cells.
What are lysosomes?
This specific form of active transport uses protein pumps to move Na+ and K+ ions across the membranes.
What is the sodium-potassium pump?
By controlling water movement in response to external tonicity, the cell membrane actively works to maintain the proper fluid balance and solute concentrations necessary for cellular function, which is a core aspect of this state of cells.
What is homeostasis?