Biology Unit Test Flashcards
Cells are
The basic unit of life
What is osmosis?
The movement of water across a membrane
Who is Robert Hook
The person who coined the term cells
Plant cell is (circle or rectangle)
rectangular
Staining causes what organelle to become visible
Nucleus
An organelle which plant cell do have but animal cells do not
cell wall and chloroplast
Organelle responsible for storage
Vacuole
Organelle that regulates movement of substances into and out of the cell
Cell membrane
Meiosis
halves the chromosomes
Cell membranes are composed of…
Proteins phospho lipids
responsible for transporting water and dissolved minerals in plants
Xylem
Stomata
plants get rid of waste from it
an organelle found in only animal cells
centriole
Ribosomes
synthesized protein
Selectively permeable membrane
allows only certain types of molecules to pass through````
diffusion
odours are spread through the air by this process
Purpose of staining cells
Improve the contrast
That organelle that enables reproduction by instructions
Nucleus (DNA)
Cell wall is made up of
Cellulose
Produces ATP
Mitochondria
Produces glucose
Chloroplast
Lysosomes
Contain digestive enzymes
What type of life are eukaryotic cells
Plant animal fungi cells
Prokaryotic
Bacteria
How to calculate magnification
eyepiece times objective lens
What happens to the field of view of the microscope when the magnification increases
Field of view gets smaller
Number of mm in one cm
10
the greek symbol for the prefix micrometers
mu
How many microns in one meter
One million
the proper technique for preparing a wet mount slide
put a drop of water over the thing then cover slip when stain then paper towel and hten the stain goes across
how an image appears under a microscope
backwards and upside down
use which lens first on a microscope
lowest objective lens
who discovered that all plants and animals were composed of cells
Theodore Schwann. Matthias Jakob Schleiden
resolution
is limited by the wavelength of the microscope
Rudolf Virchow
stated that all cells come from pre-existing cells
in this type of electron microscope, the cells are non-living
TEM
Allows large particles to cross the cell membrane by facilitated diffusion
Protein channels
A solution in which the solute concentration outside is lower than the solute concentration inside
Hypertonic
A vacuole may excrete waste by this process
Exocytosis
process of a cell ingesting a large substance such as bacteria
Cygocytosir (white blood cell engulfing bacteria)
Active transport
Energy is required, membrane proteins are required, molecules are transported against the concentration gradient
Smells travelling through the room caused by
Diffusion (passive transport/molecules moving with the concentration gradient)
If you water your plants with salt water, the cells will shrivel up because it is
Hypotonic
The process by which oxygen and CO2 molecules move across the cell membrane
diffusion
This happens if too much water moves into an animal cell
Hemolysis
Semi-liquid material that surround the organelles in the cell
Cytoplasm
Groups of cells that function together make up a
Tissue
A system that can exchange matter and energy w its surrounding
Open system
The organelle that packages and stores proteins
Golgi Apparatus
Produces ATP through cellular respiration
Mitochondria
The three main types of plant tissue
Ground tissue
vascular tissue
dermal tissue
Moves water and minerals
Xylem
Responsible for cellular division and growth in plants
meristem
the process which produces oxygen
Photosynthesis
Is a result of minerals in the root cell causing water to enter by osmosis
Root Pressure
