Unit 3 - Cells Flashcards

1
Q

definition of theory

A

hypothesis that has been tested many times and has not yet been proven wrong

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2
Q

who dicovered cells while looking at cork under microscope

A

Robert Hooke

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3
Q

who described cells as tiny boxes or honey comb and thought cells only existed in plants and fungi

A

Robert Hooke

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4
Q

when did Robert Hooke discover cells

A

1665

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5
Q

who used a handmade microscope to observe pond scum

A

Anton van Leeuwenhoek

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6
Q

who discovered single-cell organisms

A

Anton van Leeuwenhoek

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7
Q

who observed blood cells from different animals and was the first to observe living cells

A

Anton van Leeuwenhoek

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8
Q

when did Anton van Leeuwenhoek contribute to cell theory

A

1673

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9
Q

what is spontaneous generation

A

living things come from nonliving things

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10
Q

who disproved spontaneous generation with an experiment with flies and meat

A

Francesco Redi

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11
Q

who disproved spontaneous generation with broth experiment

A

Louis pasteur

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12
Q

who found all plants are made of cells

A

Matthias schleiden

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13
Q

when did Matthias schleiden find all plants are made of cells

A

1838

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14
Q

who found all animal tissue is made of cells

A

Theodor Schwann

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15
Q

when did Theodor Schwann find all animal tissue is made of cells

A

1839

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16
Q

who through studying diseases found that all cells come from pre existing cells

A

Rudolph Virchow

17
Q

when did Rudolph Virchow find all cells come from pre existing cells

18
Q

what are the parts of the traditional cell theory

A
  • all organisms are made of one or more cells and cells come from other cells
  • cells are the basic units of life in all living things
  • cells have specialized structures and functions which are necessary for life
19
Q

what are the parts of the modern cell theory

A
  • energy flow occurs within cells
  • cells contain hereditary info (DNA) that is passed from cell to cell during cell division
  • all cells are similar in chemical composition in organisms of similar species
20
Q

how many cells are in the human body

A

75 to 100 trillion cells

21
Q

what are the levels of organization in an organism

A

atoms - compounds/biomolecules - organelles - cells - tissues - organs - organ systems - organism

22
Q

tissue

A

group of similar cells grouped together

23
Q

organ

A

different tissues grouped together

24
Q

organ system

A

organs and tissues working together

25
cytoskeleton (what is it and what is it made of, what does it do)
made of rods and filaments that form framework for the cell (skeleton), helps keep cells shape, made from microtubules and microfilaments
26
centriole
found in animal cells, help in cell division
27
cilia and flagella
help with movement, cilia short and hairlike and flagella long and whiplike
28
amyloplast
only in plants, converts glucose to starch then stores starch
29
order of discovery of cells w/ scientists (including spontaneous generation)
- Robert Hooke - Anton van Leeuwenhoek - Francesco Redi - Louis Pasteur - Matthias Schleiden - Theodor Schwann - Rudolph Virchow