Biology Lab Practical 1 Quizzes & Answers With
Complete Solutions Graded A+
QUESTIONS AND ANSWERS
Occular. ANSWER - pair of lenses nearest the eyes magnify 10x
Body tube. ANSWER - supports the oculars and revolving nosepiece with its
magnifying elements
revolving nosepiece. ANSWER - a rotating structure with four objectives
objectives. ANSWER - scanning (4x), medium (10x), high (40x), and oil immersion
(100x)
mechanical stage. ANSWER - horizontal plate with a slide holder mounted on it and
two slide adjusting Knobs
substage condenser. ANSWER - a system of lenses that concentrates the light from
the illuminator onto the specifmen
iris diaphragm. ANSWER - a shutter-like structure below the substage condenser
that regulates the amount of light passing through to the specimen
illuminator. ANSWER - source of light
arm. ANSWER - supports the body tube and adjustment knobs
, fine adjustment knob. ANSWER - smaller knob which moves the mechanical stage on
a lesser scale
base. ANSWER - bears the weight of the microscope...
resolution. ANSWER - measurement of how clear the distance between two lines is -
unaided, humans cannot distinguish between lines that are less than 100 microns
(.1mm) apart
field of view. ANSWER - circular field seen when viewed through the occulars
(di/DL) = (XL/Xi). ANSWER - diameter of unknown = (4mm*power under
low)/(power at unknown diameter)
cell wall. ANSWER - rigid, transparent structure that lies outside of plant cell
membranes. Is composed of cellulose embedded in a matrix of other polysaccharides
and proteins.
central vacuole. ANSWER - Is in mature plants, and is enclosed in a membrane called
the tonoplast -holds things for the cell
chloroplasts. ANSWER - organelles containing enzymes and photosynthetic
pigments
erythrocytes. ANSWER - red blood cells
Complete Solutions Graded A+
QUESTIONS AND ANSWERS
Occular. ANSWER - pair of lenses nearest the eyes magnify 10x
Body tube. ANSWER - supports the oculars and revolving nosepiece with its
magnifying elements
revolving nosepiece. ANSWER - a rotating structure with four objectives
objectives. ANSWER - scanning (4x), medium (10x), high (40x), and oil immersion
(100x)
mechanical stage. ANSWER - horizontal plate with a slide holder mounted on it and
two slide adjusting Knobs
substage condenser. ANSWER - a system of lenses that concentrates the light from
the illuminator onto the specifmen
iris diaphragm. ANSWER - a shutter-like structure below the substage condenser
that regulates the amount of light passing through to the specimen
illuminator. ANSWER - source of light
arm. ANSWER - supports the body tube and adjustment knobs
, fine adjustment knob. ANSWER - smaller knob which moves the mechanical stage on
a lesser scale
base. ANSWER - bears the weight of the microscope...
resolution. ANSWER - measurement of how clear the distance between two lines is -
unaided, humans cannot distinguish between lines that are less than 100 microns
(.1mm) apart
field of view. ANSWER - circular field seen when viewed through the occulars
(di/DL) = (XL/Xi). ANSWER - diameter of unknown = (4mm*power under
low)/(power at unknown diameter)
cell wall. ANSWER - rigid, transparent structure that lies outside of plant cell
membranes. Is composed of cellulose embedded in a matrix of other polysaccharides
and proteins.
central vacuole. ANSWER - Is in mature plants, and is enclosed in a membrane called
the tonoplast -holds things for the cell
chloroplasts. ANSWER - organelles containing enzymes and photosynthetic
pigments
erythrocytes. ANSWER - red blood cells
