Cell theory
Write ONE of the tenets of the Cell Theory
Any of the following:
All organisms are composed of cells.
All cells come from pre-existing cells
Cells are the basic unit of life
What does the term "organelle" literally mean?
Tiny organ
Which type of cell (plant or animal) tends to have a boxy shape and always contains a cell wall?
plant cell
DNA is found inside the nucleus of plant and animal cells and are located in pairs of helix-shaped strands called _________________.
chromosomes
What is the difference between a "theory" and a "law"?
Theories can change. Laws can't change. New evidence can add to what is already known to a theory.
Which organelle is found only in plant cells and allows the plant to make its food from sunlight and water?
Chloroplast
Which organelle adds extra structural support to a plant cell and is found just outside of the cell membrane?
cell wall
Which TWO are SMALLER than cells?
Organs, Organ systems, Atoms, Tissue, Molecules
Atoms and Molecules
What is considered the "basic unit of life"?
Cell
Which organelle is the protective, outside layer of a cell and allows the cell to bring in nutrients or release waste?
cell membrane
What shape should a skin cell generally look like? Round, Flat, or Stringy?
b) flat
True or False... Each organelle carries out only one role in the life functions of the cell.
False. Organelles can have multiple roles in the life functions of the cell.
Which instrument led to the discovery of cells and the cell theory?
microscope
Which organelle is found in both plant and animal cells and its function is for storage of water or nutrients. Hint: Animals have small ones but plants have one large, central one.
vacuole
Name one organelle a plant cell has that an animal cell doesn't have.
Cell wall, Chloroplast, or large vacuole
Which answer is correct about scientific theories?
They all become laws; They allow us to make predictions about future events; or They can be changed quickly and easily.
They allow us to make predictions about future events.
How many tenets make up the cell theory?
3
Which organelle is considered the "brain" of the cell?
nucleus
What is the function of a large, central vacuole in a plant cell?
It stores water and/or nutrients for the plant.