Unit I Flashcards
Fundamental unit of life
Cell
Diversity of Cells
Appearance and Functions
English Scientist who discovered cells while looking at a thin slice of cork.
Robert Hooke
He thought that cells only existed in plants and fungi.
Robert Hooke
He used a handmade microscope to observe pond scum
Anton van Leeuwenhoek
He stated that cells are found both in animals and plants
Anton van Leeuwenhoek
Pond scum or single celled organism
Animalcules
The reason why only few cell theory advancements were made.
Spontaneous Generation
Who disproved Spontaneous Generation
Louis Pasteur
Who discovered the nucleus
Robert Brown
Random motion of particles
Brownian Motion
Who coined the term “protoplasm” to describe the contents of the cell.
Johannes Purkinje
Nerve cells are also called as
Purkinje cell
An English Botanist who concluded that “all plant parts are made of cells’
Matthias Schleiden
German Physiologist who stated that “all animal tissues are composed of cells”
Theodor Schwann
German scientist who stated that “ every cell originate from another existing cell”
Rudolph Virchow
Who demonstrated the first evidence of cell division
Rudolph Virchow
Who is the father of Microbiology
Anton van Leeuwenhoek
The book where Robert Hooke describes his discoveries
Micrographia
What is the Latin phrase for “All cells come from pre-existing cells”
Omnis cellular e cellula
Who invented the electromicroscope
Vladimir Zworykin
What are the three cell theories
- All organisms are composed of cells
- Cells are the smallest living things
- Cells arise only from pre-existing cells.
Founders of the Cell Theory
Matthias Schleiden
Theodor Schwann
Rudolph Virchow
What are the certain structures common in cells
Genetic Material
Cytoplasm
Plasma Membrane
How many statements are added in the Modern Cell Theory
4
Can resolve structures that are 200nm apart
Light Microscope
Can resolve structures that are 0.2nm apart
Electron Microscope
Two basic types of cells
Prokaryotic cells
Eukaryotic cells
A Region of cytoplasm where prokaryotes genome/DNA is located
Nucleoid
Small extra piece of chromosome/genetic material
Plasmid
Gel like matrix of water enzymes, nutrients, wastes and gases. Location of growth, metabolism, and replication.
Cytoplasm
Bacteria’s way of storing nutrients
Granules
Separates the cell from its environment
Plasma Membrane
The discovery of this part is a major advancement in the study of prokaryotes
Cytoskeleton
Short, fine appendages around the cell
Fimbriae
Wind around bacteria causing movement in waves
Axial Filament (Endoflagella)
Tubes that are longer than fimbriae but shorter than flagella
Pili
Rod-shaped bacteria
Bacilli
Spiral with rigid cell wall and flagella
Spirillum
Spiral with flexible cell wall and axial filament
Spirochete
Elongated coccal form
Coccobacilli
Bacilli that occur in long threads
Filamentous
Short, slightly curved rods
Vibrios
Bacilli with tapered ends
Fusiform
Characteristics of Prokaryotes
- Does not have nucleus
- etc
Virus are not living because?
- They are not made of cell
- etc.
What are the characteristics of Eukaryotic cells?
- Have a nucleus
Nickname and Function of Nucleus
“The Control Center”
Holds the DNA
Cytoplasm is consist of?
- Cytosol
- Organelles
- etc.
Nickname and function of Mitochondria
“The Powerhouse”
Energy formation
Breaks down food to make ATP
It is the major fuel for a cell activities that require energy.
Adenosine triphosphate
Dense particles of rRNA and protein
Ribosomes
What is the function of Ribosome
Makes protein
Synthesize proteins that function within the cell
Free Ribosomes
Synthesize proteins incorporated into cell membrane
Attached Ribosomes
Network of rods that support the cell
Cytoskeleton
Thick rods composed of tubulin
Microtubules
Thin filaments composed of actin
Microfilaments
Tough protein fibers
Intermediate filaments
Finger like projections of the plasma membrane
Microvilli
Short hair like projections. It propels substances over surface of cell
Cilia
Long hair like projections
Flagella
Nickname and function of Endoplasmic reticulum
“Roads”
The internal delivery system of the cell
Endoplasmic reticulum with rough appearance because it has ribosomes
Rough ER
It synthesize fats or lipids
Smooth ER
Nickname and function of Goligi Apparatus
“The Shippers”
Packages, modifies, and transports materials to different location inside/outside of the cell
It is called as “Clean-up crews”
It’s function is to break down food into particles so the rest of the cell can use and to destroy old cells.
Lysosomes
Membranous sacs of oxidase and catalase enzymes
Peroxisome
Function of Peroxisome
Detoxify alcohol and neutralize dangerous free radicals
Characteristics of Plant cells
- Have a cell wall and cell membrane
- etc.
What is the function of Vacuoles
Stores water
It traps energy from the sun to produce food for the plant cell
Chloroplast
What gives the green color of the chloroplast
Chlorophyll
It provides support and protection to the cell membrane
Cell Wall
Characteristics of Animal cell
- Can not make their own food
- etc
Cells that connect body parts, form linings, or transport gases.
Fibroblast
Erythrocytes
Epithelial Cells
Cells that connect body parts, form linings, or transport gases.
Fibroblast
Erythrocytes
Epithelial Cells
Cells that move organs and body parts
Skeletal Muscle Cell
Smooth Muscle Cells
Cells that stores nutrients
Fat Cell
Cell that fights diseases
Macrophage
Cells that gather information and controls body functions
Nerve Cell
Cell of Reproduction
Sperm
Egg cell
Differences of Prokaryotic and Eukaryotic cells
Prokaryotic cells are smaller
etc.