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Studysets > Chapter 8: 8.1-Life Is Cellular Quiz > Flashcards

Chapter 8: 8.1-Life Is Cellular Quiz Flashcards

1
Q

When were microscopes created? By who? Discovered how?

A

Created after the 1500, English glassmakers, using several glass lenses could magnify small objects.

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2
Q

Englishmen who is credited for discovering cells.

A

Robert Hooke

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3
Q

Robert Hooke used an early microscope to look at a non-living thin slice of what?

A

Cork (plant material)

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4
Q

Hooke called the chambers what?

A

Cells

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5
Q

What are cells?

A

Cells are the basic units of all living things.

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6
Q

German botanist concluded that all plants are made of cells

A

Matthias schleiden

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7
Q

German biologist stated all animals are made of cells

A

Theodor Schwann

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8
Q

A German biologist/physician who published the idea that cells can be produced only from the division of existing cells.

A

Rudolf Virchow

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9
Q

Rudolf Virchow helped build what?

A

Cell theory

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10
Q

The cell theory states what?

A
  1. All living things are made up of cells
  2. Cells are the basic units of structure and function in living things
  3. New cells produced from existing cells
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11
Q

How do microscopes work?

A

They use beams of light or electrons.

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12
Q

Light microscopes are good for viewing cells as small as what?

A

1 millionth of a meter

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13
Q

Electron microscopes are capable of viewing cellular structures that are what of a meter?

A

1 billionth

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14
Q

Transmission Electron Microscopes (TEM)

A

Make it possible to exploit cell structures and large proteins. Can only pass through thin samples. Appear two-dimensional.

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15
Q

Scanning Electron Microscopes (SEM)

A

Doesn’t have to be cut into thinner slices. Produces three-dimensional images.

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16
Q

Typical cells range from what?

A

5 to 50 micrometers, can range diff sizes

17
Q

All cells are surrounded by a thin flexible barrier called a what or what?

A

Cell membrane or plasma membrane.

18
Q

Eukaryotes and Prokaryotes are cells that may or may not close their genetic material (DNA) within nuclei? Which can and can’t

A

Eukaryote= that can (enclose)
Prokaryote= that don’t enclose!

19
Q

Bacteria are Eukaryotes or Prokaryotes?

A

Prokaryotes!

20
Q

Prokaryotes do what to their environment?

A

Grow, reproduce and respond

21
Q

Prokaryotes make life on earth possible. True or false?

A

True

22
Q

Eukaryotes what separates from the genetic material form the rest of the cell?

A

Nucleus

23
Q

Cells of multicellular organisms cannot survive alone. True or false.

A

True

24
Q

What does TEM stand for?

A

Transmission Electron Microscope

25
Q

What does SEM stand for?

A

Scanning Electron Microscopes

Studysets (4 decks)

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