Bio 220: Lab 1

Front 1

1 x 10⁰ =

Back 1

1

Front 2

1 x 10² =

Back 2

10 x 10 = 100

Front 3

1 x 10¹ =

Back 3

10

Front 4

1 x 10³ =

Back 4

10 x 10 x 10 = 1,000

Front 5

1 x 10⁶ =

Back 5

10 x 10 x 10 x 10 x 10 x 10 = 1,000,000

Front 6

1 x 10⁷ =

Back 6

10,000,000

Front 7

1 x 10⁹ =

Back 7

1,000,000,000

Front 8

1 x 10⁻¹ =

Back 8

1/10 = 0.1

Front 9

1 x 10⁻² =

Back 9

1/100 = 0.01

Front 10

1 x 10⁻³ =

Back 10

1/1,000 = 0.001

Front 11

1 x 10⁻⁶ =

Back 11

1/1,000,000 = 0.000001

Front 12

1 x 10⁻⁷ =

Back 12

1/10,000,000 = 0.0000001

Front 13

1 x 10⁻⁹ =

Back 13

1/1,000,000,000 = 0.000000001

Front 14

To see slight or barely discernible turbidity (cloudiness) in a broth media, there would have to be just more than

Back 14

10⁷ organisms/mL (milliliter) or 10⁸ organisms/10ml
10⁸ = 100 million bacterial cells in one test tube

Front 15

In a tube showing heavy turbidity (cloudiness) one would expect to see ...

Back 15

10¹⁰ organisms/ml or 10¹¹ organisms/10ml. 10¹¹ = 100 billion bacterial cells in one test tube.

Front 16

To observe the first signs of growth on a solid medium such as an agar plate, ...

Back 16

10⁶ or a million bacterial cells would have to be present.
These very small or pinpoint colonies are referred to as punctiform colonies

Front 17

1 m = ___ mm = ___ µm = ___ nm

Back 17

1 m = 10³ mm = 10⁶ µm = 10⁹ nm

Front 18

1 m = ___ mm

Back 18

1 m = 1000 mm = 10³ mm

Front 19

1 mm = ___ µm

Back 19

1 mm = 1000 µm = 10³ µm

Front 20

The average bacterial organism is approximately is

Back 20

1 µm in diameter or 1 x 10⁻⁶m

Front 21

Our light microscopes can resolve down to ___. This allows visualizing bacterial organisms using these light microscopes.

Back 21

0.2 µm

Front 22

A bacterial cell is equivalent in size to a eukaryotic mitochondrion.

Back 22

1 µm = 1000 nm = 10³ nm

Front 23

1 mm = ___ m

Back 23

10⁻³ m

Front 24

1 µm = ___ mm = ___ m

Back 24

1 µm = 10⁻³ mm = 10⁻⁶ m

Front 25

1 nm = ___ µm = ___mm = ___ m

Back 25

1 nm = 10⁻³ µm = 10⁻⁶ mm = 10⁻⁹ m

Front 26

10⁻¹ µm = ___ µm = ___ nm

Back 26

10⁻¹ µm = 0.1 µm = 100 nm

Front 27

ubiquitous

Back 27

omnipresent or everywhere

Front 28

colony

Back 28

a macroscopic visible growth of microorganisms on a solid culture medium, which may be derived from one or more cells. To visualize a colony, there must be at least 10⁶ cells. A pinpoint colony is referred to as a punctiform colony

Front 29

nosocomial infection

Back 29

an infection derived from a clinical/hospital setting

Front 30

fastidious organisms

Back 30

organisms that have complex nutritional requirements. Members of the genus Streptococcus and Neisseria are oftentimes fastidious

Front 31

resolution

Back 31

the ability to distinguish fine detail; also called resolving power

Front 32

fomites

Back 32

inanimate objects capable of absorbing, retaining and transmitting infectious agents