Discovery & Properties of Cells Flashcards
define what a cell is
a living, most basic unit of life
how did the name ‘cell’ come to be?
in 1665 scientist Robert Hooke examined cork through a microscope - he referred to the ‘chambers’ as cells
in what forms can cells exist as
tissues, independent organisms
what are some abilities of cells
growth, reproduction, energy conversion, respond to environments
what does the cell theory tell us
living cells are made through the division of pre-existing cells
simplest forms of life are referred to as _____________________; complex communities of cells are called __________________
simple celled organisms; higher organisms
all living things are made of _________
cells
living cells have similar __________; therefore they perform the same general _________
chemistry; functions
simply describe the flow of genetic information
DNA to RNA to protein
proteins are made from the same subset of ______ amino acids
20
are viruses considered living? why or why not?
no; cannot reproduce themselves unless they infect a cell (i.e. not alone)
how do viruses infect a cell
attach to cell, replicate their genetic information to make a particular protein, this will make the outer coat of new virus particles
what is cell lysis
rupture of cell membrane or wall (e.g. shown in cold sores)
