CH 3.1-3.2 TEST Review Flashcards Preview

6th Period Biology > CH 3.1-3.2 TEST Review > Flashcards

Flashcards in CH 3.1-3.2 TEST Review Deck (47)
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1

What is the smallest unit of life?

cell

2

What is the difference between a compound and simple lens microscope?

compound has several lens, simple has only 1 lens

3

Who discovered and named cells by examining bark?

Hooke

4

Who viewed the first living cell with a simple lens microscope?

Leeuwenhoek

5

Who concluded that plants were made of cells?

Schleiden

6

Who concluded that animals were made of cells?

Schwann

7

Who proposed that cells come from other cells?

Virchow

8

What are the 3 things stated in cell theory?

1. all living things are made of cells
2. Cells are the smallest part of living things that are still alive
3. All cells come from pre-existing cells

9

What does unicellular mean?

organism made of one cell

10

What does multicellular mean?

organism made of many cells

11

What type of cells do not have a nucleus or membrane bound organelles?

prokaryotes

12

What type of cells have a nucleus and membrane bound organelles?

eukaryotes

13

What is the only organelle found in prokarytoes?

ribosomes

14

What types of organisms are prokaryotic?

bacteria

15

What type of organisms are eukaryotic?

plants, animals, fungi, protists

16

What is the maximum magnification of a modern compound light microscope?

1000X

17

What limits the magnification abilities of light microscopes?

light

18

What is the magnification of an electron microscope?

over 500,000X

19

What are some pros to using light over electron microscopes?

can view living specimens
cheaper
portable

20

What are some cons to using electron microscopes?

can only view non-living speciemens
expensive
large

21

Which type of microscope requires that the specimen be dehydrated and placed in a vacuum?

electron microscope

22

Which type of electron microscope shows 3D images of the surface of cells?

scanning

23

Which type of electron microscope can show the internal organelles of the cell?

transmission

24

Which organelle provides support and shapes the cell, aids in cell movement, provides strength?

cytoskeleton

25

What are the 3 fibers that make up the cytoskeleton?

microtubules
intermediate filaments
microfilaments

26

What is the fluid portion inside the cell called?

cytosol

27

What structure contains the organelles and serves as the site for many chemical reactions?

cytoplasm

28

Where is the DNA stored?

nucleus

29

What is the membrane that surrounds the nucleus called?

nuclear membrane

30

What structure makes ribosomes?

nucleolus