BIOL 211 Exam 1 Stewart Questions with
100% Correct Answers | Latest Version
2024 | Verified
What is the goal of bioremediation? - ✔✔To clean up areas polluted with toxic compounds using
bacteria
Broad-spectrum antibiotics inhibit the growth of most intestinal bacteria. Consequently, assuming that
nothing is done to counter the reduction of intestinal bacteria, a hospital patient who is receiving broad-
spectrum antibiotics is most likely to become - ✔✔deficient in certain vitamins and nutrients
If prokaryotes did not exist, what would change in the nitrogen cycle? - ✔✔The rate of movement of
nitrogen atoms through ecosystems would be much slower
Multicellularity and large body size of eukaryotic organisms require high metabolic rates and efficient
ATP production by aerobic respiration. How did bacteria change Earth's atmosphere to enable aerobic
respiration? - ✔✔Oxygenic photosynthesis by cyanobacteria significantly increased the amount of
oxygen in the atmosphere.
Which of the following would be useful in creating a phylogenetic tree of a vertebrate taxon?
I. morphological data from fossil species
II. genetic sequences from living species
III. behavioral data from living species - ✔✔I,II, and III
Whatever its ultimate cause(s), the Cambrian explosion is a prime example of ___________ -
✔✔Adaptive radiation
When single lineage produces many descendant species with a wide range of adaptive forms. -
✔✔Adaptive Radiation
, Chloroplasts found in plants arose via _____ - ✔✔endosymbiosis of cyanobacteria
Cambrian explosion time frame? - ✔✔540 MYA
One part of the cell theory states that all cells come from _____ - ✔✔pre-existing cells
In comparison to eukaryotes, prokaryotes_______ - ✔✔are smaller
In the 14th century, what reduced European human population by 30-60%? - ✔✔Black Death pandemic
or bubonic plague
2. What was believed to have begun the spread of this bacterium
a. Wasps
b. Rat flea
c. Common flea
d. House fly - ✔✔Rat flea
A pathogen is a________?
a. virus
b. Prion
c. disease causing organism
d. type of antibiotic - ✔✔Disease causing organism
Two contributing factors to the Black Death pandemic were poor hygiene and the pathogenic life cycle.
why might these two factors have had such a big impact on the spread of this deadly bacteria? - ✔✔Flea
and rat infestations were huge problem due to cleanliness people didn't know ow to treat pathogens.
Spiraled out of control.
100% Correct Answers | Latest Version
2024 | Verified
What is the goal of bioremediation? - ✔✔To clean up areas polluted with toxic compounds using
bacteria
Broad-spectrum antibiotics inhibit the growth of most intestinal bacteria. Consequently, assuming that
nothing is done to counter the reduction of intestinal bacteria, a hospital patient who is receiving broad-
spectrum antibiotics is most likely to become - ✔✔deficient in certain vitamins and nutrients
If prokaryotes did not exist, what would change in the nitrogen cycle? - ✔✔The rate of movement of
nitrogen atoms through ecosystems would be much slower
Multicellularity and large body size of eukaryotic organisms require high metabolic rates and efficient
ATP production by aerobic respiration. How did bacteria change Earth's atmosphere to enable aerobic
respiration? - ✔✔Oxygenic photosynthesis by cyanobacteria significantly increased the amount of
oxygen in the atmosphere.
Which of the following would be useful in creating a phylogenetic tree of a vertebrate taxon?
I. morphological data from fossil species
II. genetic sequences from living species
III. behavioral data from living species - ✔✔I,II, and III
Whatever its ultimate cause(s), the Cambrian explosion is a prime example of ___________ -
✔✔Adaptive radiation
When single lineage produces many descendant species with a wide range of adaptive forms. -
✔✔Adaptive Radiation
, Chloroplasts found in plants arose via _____ - ✔✔endosymbiosis of cyanobacteria
Cambrian explosion time frame? - ✔✔540 MYA
One part of the cell theory states that all cells come from _____ - ✔✔pre-existing cells
In comparison to eukaryotes, prokaryotes_______ - ✔✔are smaller
In the 14th century, what reduced European human population by 30-60%? - ✔✔Black Death pandemic
or bubonic plague
2. What was believed to have begun the spread of this bacterium
a. Wasps
b. Rat flea
c. Common flea
d. House fly - ✔✔Rat flea
A pathogen is a________?
a. virus
b. Prion
c. disease causing organism
d. type of antibiotic - ✔✔Disease causing organism
Two contributing factors to the Black Death pandemic were poor hygiene and the pathogenic life cycle.
why might these two factors have had such a big impact on the spread of this deadly bacteria? - ✔✔Flea
and rat infestations were huge problem due to cleanliness people didn't know ow to treat pathogens.
Spiraled out of control.
