Ch 2 - Microscopy

Question 1

Microscopy that allows for the visualization of live samples

Answer 1

Phase-contrast

Question 2

microscopy image is dark cells on a light background

Answer 2

phase-contrast

Question 3

improves contrast of a sample without the use of dye

Answer 3

phase-contrast

Question 4

microscopy image appears light on a dark background

Answer 4

dark-field microscopy

Question 5

Light reaching the lens has been scattered by specimen

Answer 5

dark-field microscopy

Question 6

stylus measures weak repulsive forces between it and the specimen

Answer 6

atomic force microscopy

Question 7

Uses a computerized microscope coupled with a laser source to generate a three-dimensional image

Answer 7

Confocal Scanning Laser Microscopy

Question 8

Computer can focus the laser on single layers of the specimen

Answer 8

Confocal Scanning Laser Microscopy

Question 9

Specimen is coated with a thin film of heavy metal

Answer 9

scanning electron microscope

Question 10

very large specimens can be observed

Answer 10

scanning electron microscope

Question 11

Prokaryotic/eukaryotic cells generally have a single, circular DNA molecule called a chromosome

Answer 11

prokaryotic

Question 12

Prokaryotic/ Eukaryotic DNA is linear

Answer 12

eukaryotic

Question 13

Typically two copies of each chromosome: prokaryotic/eukaryotic

Answer 13

eukaryotic

Question 14

may have small amounts of extra-chromosomal DNA called plasmids : prokaryotic/eukaryotic

Answer 14

prokaryotic

Question 15

During cell division, nucleus divides by mitosis

: prokaryotic/eukaryotic

Answer 15

eukaryotic

Question 16

Evolutionary relationships between organisms

Answer 16

phylogeny

Question 17

Obtain their energy from the oxidation of organic molecules

Answer 17

chemoorganotrophs

Question 18

Obtain their energy from the oxidation of inorganic molecules

Answer 18

chemolithotrophs

Question 19

use oxygen to obtain energy

Answer 19

aerobes

Question 20

obtain energy in the absence of oxygen

Answer 20

anaerobes

Question 21

Contain pigments that allow them to use light as an energy source

Answer 21

phototrophs

Question 22

this photosynthesis produces oxygen

Answer 22

oxygenic

Question 23

this photosynthesis does not produce oxygen

Answer 23

anoxygenic

Question 24

Use carbon dioxide as their carbon source

Answer 24

autotrophs

Question 25

Require one or more organic molecules for their carbon source

Answer 25

heterotrophs

Question 26

All known pathogenic prokaryotes are

Answer 26

bacteria

Question 27

______make up the largest phylum of Bacteria

Answer 27

proteobacteria

Question 28

are proteobacteria gram (-) or Gram (+)?

Answer 28

Gram (-)

Question 29

are cyanobacteria gram (-) or Gram (+)?

Answer 29

Gram (+)

Question 30

what are the two phyla in the Archae domain?

Answer 30

Euryarchaeota , Crenarchaeota

Question 31

degrade organic matter anaerobically, produce methane

Answer 31

methanogens

Question 32

require high salt concentrations for metabolism and reproduction

Answer 32

extreme halophiles

Question 33

grow in moderately high temperatures and low-pH environments

Answer 33

thermoacidophiles

Question 34

Vast majority of cultured Crenarchaeota

Answer 34

hyperthermophiles

Question 35

algae, fungi, protozoa, and slime molds: eukaryotic or prokaryotic

Answer 35

eukaryotic

Question 36

do algae and fungi have cell walls?

Answer 36

yes

Question 37

do protozoa and slime molds have cell walls?

Answer 37

no

Question 38

microbes with mutualistic relationship between two groups of protists

Answer 38

lichens