Lesson 1: Microscope Flashcards
a. A dutch business man who made his own version of microscope
b. magnification ______
-he observed living cells such as
1
2
3
and single-celled
1
2
3
a. Antonie van Leeuwenhoek
b. 300x
1) plant cells, 2) blood cells, 3) sperm cells
1) algae, 2) protozoa (pond) 3) bacteria
microscope have limited 1) ____
what is the age of Observation “2)___________________”
1) resolution
2) scientists have no basis or background knowledge but only writes down what they observe
There were 1) _________ improvements in the microscope in the year 2) _____
3) _______ lenses were created which are made up of 4) ________ and 5) _____
the creation of this lens enable viewing specimen at higher 6)____ and ___
1) optical
2) 1830’s
3) Compound,
4) ocular/eyepiece lens
5) objective lens
6) magnification and resolution
Describe light micrscope
- views what structure
- views what structure
- magnification
- can view the entire cell
-can view living cells
magnifies from 1000 X to 1500X
Describe electron microscope
- views _____ and ______ structure
-magnification
-mechanism
-can observed _______
-disadvantage
- external and internal
- 100,000 X
-used electron beams with short WL that increases magnification and resolution - single strand DNA
-cannot view living organism due to extensive preparation
Describe a Transmission electron microscope (TEM)
-specimen required should 1) ______ around 2) ________
3) used for observing _________
4) mechanism
1) have a certain thickness
2) 20-100 nm thick
3) internal structures
4) transmit electrons through cell
Describe an electron microscope (SEM)
1) specimen preparation
2) views what structure
3) generates what type of images
4) mechanism
1) covered of a thin layer of metal specifically gold
specimen must be dried and fixatives were added to lessen debris and artifacts
2) external structure
3) 3-D high-definition images
4) bounces electrons on the surface of the cell
Light microscopes have 1) ________ compared to an electron microscope
2) it can view the ________ of the cell including its ________
3) it can also view ______ samples and _______
1) less magnifying power
2) entirety, outline, and shape
3) unstained and moving living cells (motility)
A microscope that allows to see internal structure and dissect smaller animals like insects
Dissecting light microscope
Bacteria and archaea about 1)_______ than plants and animal cells
2) average size of bacteria
3) average size of plant and animals
frog eggs are ______ than animal and plant cells
1) 10 times smaller
2) 1-10 um
3) 10-100 um
4) 10 times larger
Cell comparison
________ of _____ would fit one human cell
describe the relationship between bacterial cells and the human body
thousands of bacterial cell
because we have normal flora we have a give-and-take relationship with bacteria.
List 4 common features among eukaryotic prokaryotic cell
List 4 chemical reactions carried out by these features
1) genetic material (DNA & RNA)
2) ribosomes
3) cytoplasm
4) cell membrane
1) cellular respiration
2) protein synthesis
3) central dogma
4) aerobic and anaerobic respiration
Identify which of the seven fundamental properties of the cell is being described.
A. eukaryotic cell has the most complex structures
and organelles compared to the prokaryotic cell
B. Why do eukaryotic cells have complex structures
A. Cells are highly complex and organized
B. this complexity is associated much complex physiological processes that that particular
the cell carries out.
Identify which of the seven fundamental properties of the cell is being described.
Organisms are built according to
the information that is encoded in our genes
Cells possess a genetic program and
the means to use it.
Identify which of the seven fundamental properties of the cell is being described.
A. Cells come from preexisting cells.
B. explain the replacement of cells
A. Cells are capable of producing more of
themselves
B. some cells are too old so they undergo apoptosis-programmed cell death
