Science B2 Flashcards
function of eyepiece and proper care
function- contains lens that magnifies (place to view, ocular lens)
care- try to keep both eyes open
function of course adjustment knob and proper care
function- moves stage up or down to focus on object to make it clearer
care- use only when using the lowest power lens
function of fine adjustment knob and proper care
function- brings the object into focus
care- use w/ any lens but mainly with high and medium power
function of revolving nose piece and proper care
function- holds the three objective lens, rotates to choose lens
care- avoid getting it dirty and clean properly
function of stage and proper care
function - supports and holds the slide and allows you to view the object care-keep stage dry
function of diaphragm and proper care
function - has holes that let amounts of light pass, adjusts light
function of stage clips and proper care
function - holds the slide firmly on the stage
function of lamp and proper care
function - supplies the light that passes through the object you are viewing care - if using mirror avoid reflection of direct sunlight in the microscope as this can damage your eyes
function of arm and proper care
function - allows you to carry the microscope securely, support for body tube care - when carrying the arm be sure to have your hand on the base as well
function of base and proper care
function - foundation for the scope care - when carrying be sure to hold the arm and base
low, high and medium magnification
low- 4x10=40
high- 40x10=400
medium- 10x10=100
nucleus
the command Center, controls all activity in the cell, large dark circle near middle of the cell
cell wall
only in plant cells, provides support for cell, ridged frame like shape covering cell membrane
cell membrane
thin line that surrounds the whole cell, prevents material coming in or out. Gateway to the cell.
cytoplasm
liquid inside the cell with grainy bits, contains all material and nutrients
vacuoles
animal - nutrients and water is stored here, has multiple vacuoles
plants - only has one large vacuole
chloroplasts
only in plant cells, converts energy from sun into food, located on outer edge of plant cell
mitochondria
creates energy for the cell “power plant” looks like a jelly bean
organelles
tiny cellular structure that performs specific functions within a cell (similar to how body organs perform different functions)
microorganism
unicellular organism that can be seen only through a microscope
Mycoplasma
type of microscopic organism that looks like a worm
Diffusion
the moment particles move from an area of high to low concentration. Continues until all molecules are evenly spaced. (Equilibrium is reached) Molecules will still move around but are spaced out.
osmosis
diffusion of water through a permeable membrane
Unicellular
single cell, can eat, move and react to stimuli, get rid of waste products and reproduce
Multicellular
two or more cells - rely on many specialized cells to preform functions like eating, moving and so on. As a result all cells react to one another.
Cilia
hair like structure covering the Paramecium (cell). Helps to gather food.
Pseudo-pods
Amebas move around using foot-like projections called pseudopods. Used to capture food.
Amoeba reproduction
When the amoeba reaches the limit in size, they divide into two.
Paramecium reproduction
cell splits
Organs animal
Animal - connective, epithelial,
nervous, and muscle tissues.
Organs - Plant
photosynthetic/storage, protective, and transport. (leaves, roots and stems).
Connective Tissue and Epithelial Tissue
Connective tissue - supports and connect different parts of the body - blood, fat, cartilage, bones, and tendons
Epithelial Tissue - covers the surface of your body and the outside of your organs (like skin)
Muscle Tissue and Nervous Tissue
Muscle Tissue - allows you to move
Nervous Tissue - makes up the brain, spinal cord and nerves
Photosynthetic/Storage Tissue
uses sunlight to produce sugar that plants use for energy (leaves)
Transport Tissue
as the roots and the stems - tube like cells with hallow centre - phloem transports food from leaves - Xylem transports water from roots
Protective Tissue
water proof layer, protects the plant (stem)
How do amoebas move around in the water
move around using foot like projections Pseudopods. They extend a a pseudopod and the cytoplasm streams into it.
How does paramecium move in water
the Cilia moves back and forth in the water
What are the 3 organ of the plant?
Photosynthetic, Protective, Transport
What kind of tissue supports and connects different parts of the body?
Connective tissue - supports and connect different parts of the body - blood, fat, cartilage, bones, and tendons
What kind of tissue covers the surface of your body and lines the inside of some of your organs?
Epithelial Tissue - covers the surface of your body and the outside of your organs (like skin)
What kind of tissue makes up the brain, spinal cord and nerves
Nervous Tissue - makes up the brain, spinal cord and nerves
What kind of tissue allows you to move your body blood through your heart and move food along your intestines
Muscle Tissue - allows you to move
