Which tenet comes first in the cell theory?

Cells are the building blocks of all organisms.

Why can the nosepiece be rotated?

so you can choose the correct magnification

This is the third tenet of the cell theory.

All cells come from preexisting cells.

Which is the second tenet of the cell theory?

All organisms are made of one or more cells.

What is the purpose of the diaphragm on a compound microscope?

regulates amount of light passing through stage & specimen

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Unit 1: Microscopes & Cell Theory

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A #science review of microscopes and cell theory.

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Questions 16

Answers

1
Which tenet comes first in the cell theory?
All cells come from pre-existing cells.
Cells are the building blocks of all organisms.
Cells are the building blocks of only animal cells.
All organisms are made of one or more cells.
2
How many lenses were on van Leeuwenhoek’s 1st microscope and how powerful was that microscope?
two; 3x
one; 3x
two; 300x
one; 300x
3
Who was given credit for viewing “this invisible world” for the first time?
Albert Einstein
Anton van Leeuwenhoek
Robert Hooke
Anthony van Leeuwenhoek
4
Why can the nosepiece be rotated?
so you can choose the correct magnification
so you can move the eyepiece
so you can choose the correct specimen
so you can move the glass slide
5
What are the small things Anton van Leeuwenhoek observed called today?
cells
microscopes
living organisms
microbes
6
Where is the specimen placed on a microscope?
stage clips
platform
stage
base
7
What magnifies the lighted image on a compound microscope?
objectives and eyepiece
nosepiece and objectives
light source and objectives
eyepiece and light source
8
This is used to focus the specimen and moves either the tube or the stage up rapidly?
tube
coarse adjustment knob
fine adjustment knob
adjustment knob
9
What his Antonio van Leeuwenhoek known to be the “father” of?
microbiology
microbes
science
biology
10
What part is #6 on the picture?
objectives
stage
glass slide
stage clips
11
This is the third tenet of the cell theory.
Cells are the building blocks of only plant cells
Cells are the building blocks of all organisms.
All cells come from preexisting cells.
All organisms are made of one or more cells.
12
What is #2 on the picture?
objectives
revolving nosepiece
stage
nosepiece
13
What is part #13?
light source
coarse adjustment knob
eyepiece
fine adjustment knob
14
This is used to focus the specimen and moves either the tube or the stage up slowly?
coarse adjustment knob
adjustment knob
fine adjustment knob
stage
15
Which is the second tenet of the cell theory?
Cells are the building block of only animal cells.
All organisms are made of one or more cells.
All cells come from preexisting cells.
Cells are the building blocks of all organisms.
16
What is the purpose of the diaphragm on a compound microscope?
regulates amount of sound passing through stage & specimen
regulates amount of light passing through stage & specimen
regulates amount of light passing through specimen & tube
not part of the microscope

Unit 1: Microscopes & Cell Theory Flashcards | StudBud