Biology Topic 2 Lab Tools and Lab Skills

separates mixtures based on density

helps scientists see things they can’t with the naked eye

uses 1 lens to form an image and 1 eyepiece

uses 2 lenses to form an image and 1 eyepiece

image is reversed

produces 3D images of specimens image is not reversed and 2 eyepieces

shines a beam of electrons through the specimen that must be dead before being viewed

the system of measurement used by scientists worldwide

the number that the multiples of the metric system are based on

how long something is

the amount of matter in an object

the amount of space something takes up

the amount of heat in an object

used to measure length

used to measure mass

used to measure the volume of liquids

used to measure temperature

the metric unit for length

the metric unit for mass

the metric unit for volume

the metric unit for temperature

the concave surface of a liquid in a graduated cylinder

millimeters (are the lines that are one tenth each number on the metric ruler)

centimeters (are the lines that are each number on the metric ruler)

contains the ocular lens

holds the objective lenses and can be rotated to change magnification

magnification ranges from 4 times to 40 times

hold the slide in place

supports the slide being viewed

projects light upwards through the diaphragm the specimen and the lenses

used to support the microscope when carried

moves the stage up and down for focusing

moves the stage slightly to sharpen the image

regulates the amount of light on the specimen

supports the microscope

eyepiece magnification times objective magnification

the area you see when you look into a microscope

a technique used to make cell parts more visible

the scale used to determine if a solution is an acid a base or a neutral

determines whether solutions are an acid or a base

an acid turns blue litmus paper red and a base turns red litmus paper blue a neutral does not change the color

is used to determine the actual pH of a solution

the paper is dipped in the solution and it turns a color that is then compared to a chart that shows the pH

the pH scale is 0 to 14 where 7 is neutral 0 to 6 is an acid and 8 to 14 is a base, the colors are neutral is greenish-yellow an acid is red to yellow and a base is green to violet

turns yellow in the presence of carbon dioxide

turns from blue to yellow orange brick red in the presence of glucose

turns from amber to blue-black in the presence of starch used for the staining of plant cells

help us visualize numerical data in an organized way that is easeier to interpret

used to show a comparison between multiple objects

used to compare parts of a whole

used to show the relationship between variables

as x increases y increases

as x increases y decreases

as x increases y remains the same

is always on the x-axis

is always on the y-axis

enhances and contrasts the image of transparent objects

turns from clear to bright pink in the presence of either carbon dioxide or a base

turns from light blue to purple in the presence of protein

used for the staining of animal cells