organelles
Plant cells have one large one of these, while animal cells have many smaller ones
vacuoles
The place where mitosis begins
the nucleus
All _____________________ are made of cells
living things
the smallest units of life
cells
the structure that provides support for a plant cell (animal cells do not have these)
cell wall
The structure that directs the cell's activities - the "brain" of the cell
the nucleus
Water travels across a membrane during this process
osmosis
All cells come from _____________
existing cells
the scientist that invented the first microscope over 345 years ago.
Robert Hooke
In an animal cell, the structure that recycles worn-out cells
lysosomes
In a plant cell, the structure that converts sunlight into food
the chloroplast
the movement of a substance from an area of higher concentration to an area of lower concentration
diffusion
Cells are the _____________________ of life
the basic unit
materials can move more _____________ in a small cell
quickly
this stores information about how an organism will grow and develop
DNA
a network of folded membranes that serves as the cell's transportation system
the endoplasmic reticulum
This allows materials to move in and out of the cells (the border patrol)
the cell membrane
This scientific development was most responsible for the development of cell theory.
the invention of the microscope
when a new membrane is formed around each nucleus, __________________ is completed
mitosis or cell division
the organelle that converts chemical energy of food into a form that the cell can use
mitochondria
the part of the cell that converts energy into a form the cell can use
mitochondria
the process in which a cell nucleus divides
mitosis
To stay alive cells must be able to ___________________ (name 2 processes)
obtain nutrients, reproduce, grow or get rid of wastes
the coiled structures in a cell nucleus that carry information
chromosomes
These begin the process of making proteins (found in the endoplasmic reticulum)
ribosomes