BIO 207 EXAM 1 REVIEW; 134 QUESTIONS WITH
DETAILED VERIFIED ANSWERS; ALREADY GRADED A
"Normal" growth conditions - correct answer- Pressure: sea level
Temp: 20-40 C
PH: near-neutral
Salt conc: 0.9%
Ample nutrients
absorption - correct answer- the object blocks part of the light
active transporter requires energy - correct answer- 1. cotransport
of another substance down its gradient
2. transport is coupled to energy-yielding chemical rxn
algae - correct answer- photosynthetic eukaryotic organisms.
contain chlorophyll.
algae not necessarily related
,-unicellular microalgae (diatomes)
-multicellular chains (giant kelp)
-brown algae
ecology:
-mostly aquatic
-water necessary for physical support, reproduction, diffusion of
nutrients
-can grow wherever theres water and sunlight
all cells share common chemical components - correct answer-
water
essential ions (K, Mg, Cl)
small organic molecules (lipid, sugar)
macromolecules (DNA, RNA, protein)
amoeba - correct answer- type of protozoa that has no distinct
shape bc they lack cell wall or exoskeletal structure
-the flow of cytoplasm continuously changes the shape
-feeds on smaller organisms (fungi, bacteria, algae)
,antibiotics and their targets** - correct answer- rifampin - blocks
RNA synthesis
Tetracycline - able to target the ribosome
Erythromycin - ^same
archaea - correct answer- -have a mixture of eukaryotic and
bacterial features
-phenotypic features that distinguish them from bacteria:
cell walls-different amino acids & sugars than those of bacteria
cell membranes-chemically distinct from bacterial membranes w
differing lipid structures and chemical links
-are extremophiles
Archaea, like bacteria, are prokaryotes - correct answer- have
unique membrane & envelope structures
Atomic Force Microscopy - correct answer- images the contours of
live bacteria
measures van der waals forces between electron shells of adjacent
atoms of the cell surface and a sharp tip
, can be used to observe LIVE bacteria in water or exposed to air (unlike
EM)
ATP-Binding Cassette superfamily - correct answer- (ABC
transporters)
Powered by ATP. Found in all 3 domains of life.
Two main types:
**Uptake - critical for transporting nutrients (i.e. sugar, amino acids)
Efflux - generally used as multidrug efflux pumps (i.e. antibiotics)**
Bacteria are grown in two types of culture media*** - correct answer-
1. Liquid or broth: useful for studying the growth characteristics of a
pure culture
2. Solid: useful for trying to separate mixed cultures from clinical
specimens or natural environments
Bacteria exhibit group behaviors - correct answer- (To help bacteria
resist environmental stressors)
DETAILED VERIFIED ANSWERS; ALREADY GRADED A
"Normal" growth conditions - correct answer- Pressure: sea level
Temp: 20-40 C
PH: near-neutral
Salt conc: 0.9%
Ample nutrients
absorption - correct answer- the object blocks part of the light
active transporter requires energy - correct answer- 1. cotransport
of another substance down its gradient
2. transport is coupled to energy-yielding chemical rxn
algae - correct answer- photosynthetic eukaryotic organisms.
contain chlorophyll.
algae not necessarily related
,-unicellular microalgae (diatomes)
-multicellular chains (giant kelp)
-brown algae
ecology:
-mostly aquatic
-water necessary for physical support, reproduction, diffusion of
nutrients
-can grow wherever theres water and sunlight
all cells share common chemical components - correct answer-
water
essential ions (K, Mg, Cl)
small organic molecules (lipid, sugar)
macromolecules (DNA, RNA, protein)
amoeba - correct answer- type of protozoa that has no distinct
shape bc they lack cell wall or exoskeletal structure
-the flow of cytoplasm continuously changes the shape
-feeds on smaller organisms (fungi, bacteria, algae)
,antibiotics and their targets** - correct answer- rifampin - blocks
RNA synthesis
Tetracycline - able to target the ribosome
Erythromycin - ^same
archaea - correct answer- -have a mixture of eukaryotic and
bacterial features
-phenotypic features that distinguish them from bacteria:
cell walls-different amino acids & sugars than those of bacteria
cell membranes-chemically distinct from bacterial membranes w
differing lipid structures and chemical links
-are extremophiles
Archaea, like bacteria, are prokaryotes - correct answer- have
unique membrane & envelope structures
Atomic Force Microscopy - correct answer- images the contours of
live bacteria
measures van der waals forces between electron shells of adjacent
atoms of the cell surface and a sharp tip
, can be used to observe LIVE bacteria in water or exposed to air (unlike
EM)
ATP-Binding Cassette superfamily - correct answer- (ABC
transporters)
Powered by ATP. Found in all 3 domains of life.
Two main types:
**Uptake - critical for transporting nutrients (i.e. sugar, amino acids)
Efflux - generally used as multidrug efflux pumps (i.e. antibiotics)**
Bacteria are grown in two types of culture media*** - correct answer-
1. Liquid or broth: useful for studying the growth characteristics of a
pure culture
2. Solid: useful for trying to separate mixed cultures from clinical
specimens or natural environments
Bacteria exhibit group behaviors - correct answer- (To help bacteria
resist environmental stressors)
