Life And Cell Itro Quiz Flashcards
Anton van Leeuwenhoek
first to observe micro organisms
Robert Hooke
first to observe “small chambers” in cord and call them cells
Matthias Schleiden
discovered that plants are made of cells
Theodor Schwann
discovered that animals are made of cells
The Cell Theory
All life is made of cells
A cell is a basic unit of life
All cells come from cells
Compound Light Microscope
Common lab microscope
3000x light 2D
sees living cells
Stereomicroscope
dissecting microscope
500x light 3D
magnifies surfaces of living things
SEM
scanning EM
100,00x electrons 3D
surfaces of cells, kills
TEM
Transmission EM
300,000x electrons 2D
interior of cells, kills
Eukaryote
larger & more complex, have nucleus, have many types of organelles, 2 types
animals and plant
Prokaryote
Smaller & simpler, no nucleus, or organelles, bacteria
limit of resolution
the point at which the ability to distinguish between objects blurs/is lost. Problem with light microscopes
Microtome
a tool used to slice materials thin for use with microscopes
Centrifuge
a tool used to separate materials spinning them
cell culturing
growing cells outside of the body in a Petri dish
Homeostasis
ability to maintain constant internal conditions
like blood, pH, body temperature
HOGS EAR DEW
Characteristics of life acronym
Development
progressive changes in size, shape, and function during the life of an organism
Stimulus response
reacting to something in the environment
sound, light, touch
Asexual reproduction
process of making offspring where one organism splits into two
Sexual reproduction
process of making offspring requiring two organisms to mate
Unicellular
a single celled life form
ex: bacteria
Consumer
organism that obtains food by eating producers or other life forms
Producer
an organism that makes its own food like plants using photosynthesis
