Affiliate Marketing Secrets

1)Plasmids are transferred from one bacterium to another through
conjugation.
chemoautotrophs.
flagellae.
bacterial capsules.
2)The origin of membrane-enclosed cells is thought to include the formation of
extremophiles.
microspheres.
ribosomes.
eukaryotes.
3)Two species occupying the same niche would be __________ with each other.
in competition
at peace
coevolving
in harmony
4)The mineralized remains of an organism is called a(n)
fossil.
homologous feature.
adaptation.
population.
5)Calling a species by its genus and species name, such as Homo sapiens, is using
cladistics.
binomial nomenclature.
phylogeny.
taxonomy.
6)The isolation of two groups within a population from each other, and their adaptation to the point of being no longer able to interbreed is called
population genetics
gradualism.
speciation.
convergence.
7)The ecological role of a species is its
niche.
energy pyramid.
habitat.
community.
8)A classification system based solely on derived traits is called
phylogeny.
cladistics.
domains.
genetic drift.
9)The theory that organelles originated as separate prokaryotic symbionts is called
relative dating.
endosymbiosis.
mass extinctions.
geologic time.
10)Comparing a new fossil to a previously-dated fossil in order to determine its age is a form of
relative dating.
radiometric dating.
half-life.
geologic time.
11)Applying crystal violet stain, followed by iodine, alcohol, and safranin, a bacterial culture looked purple. The bacteria was
transduced.
Gram positive.
transformed.
Gram negative.
12)All the members of one species in a given area is its
biodiversity.
carrying capacity.
growth.
population.
13)The disappearance of a species from the Earth is referred to as
deforestation.
extinction
biodiversity.
recycling.
14)When a population does not show any net change in its gene pool, it is
using random mating.
in genetic equilibrium.
about to go extinct.
isolated reproductively.
Please help me.

Question 1
When researchers compared the number of species threatened with extinction with the total number of species, the conclusion was that over a third of all species on our planet today are in trouble.
True
False
Question 2
Humans are in the Kingdom _____.
Protista
Fungi
Animalia
Plantae
Question 3
The contribution of organisms to maintaining a livable environment for every living thing is known as _____.
biological species concept
ecosystem services
domains
cladogenesis
Question 4
The original classification system for organisms (created in the 1700’s) grouped species based on _____ similarities.
fossil record
visible traits
behavioral
DNA
Question 5
An organism is described as Eukaryotic, single celled, with a 9+2 flagella. This organism is a _____.
Fungi
Bacteria
Plantae
Protista
Question 6
The taxonomic hierarchy of domain, kingdom, phylum, class, order, family, genus, and species represents _____.
a description of the important traits of an organism
a random naming system, useful primarily as a way of communicating from one culture to another
Question 7
How many species do scientists estimate have not yet been identified and named?
hardly any; although a few new species may remain undiscovered, the world is extremely well studied at this point and it is not expected that a significant number of new species will be found in the future
may 10X what is currently known
probably double what is currently known
Question 8
When taxonomic groupings are used to hypothesize about evolutionary relationships, we call the resulting flow diagram a _____.
phylogenetic tree
any of the listed choices
family tree
cladogram
Question 9
Which taxonomic group is currently most threatened by extinction?
plants
birds
amphibians
mammals
Question 10
The biological species definition works fairly well for organisms in the Animal Kingdom, but not so well for members of other Kingdoms. What’s the problem?
asexual reproduction is extremely common in plants, fungi, protists, and prokaryotes
it is hard to observe the sex lives of non-animal organisms
the other kingdoms of life are not DNA based
scientists just don’t like to study anything but animals
Question 11
How many species have been identified and given scientific names?
1 billion
400 thousand
1.5 million
6 thousand
Question 12
Humans are in the Domain _____.
Bacteria
Archaea
Eukarya
Question 13
Which kingdom of life does not belong in the Domain Eukarya?
Archaea
Protista
Fungi
all of the listed choices
Question 14
In humans, race is important because genetic differences can affect medical conditions and treatment. However, a person’s race is not reliably determined by looking at skin color or other visible traits. Most people who think they are racially pure, probably aren’t.
True
False
Question 15
Which characteristic is most important to the biological species concept?
an organism’s ecological niche
successful interbreeding
anatomical similarities
DNA homologies
Question 16
Why do biologists feel that we should be trying to prevent species extinction?
each species carries unique genes which may be of value to genetic engineers in creating medicines, improving agricultural crops, and more
all of the listed choices
communities of organisms contribute to healthy ecosystems, keeping our air and water pure, protecting land against erosion, moderating climate, and more
ethically, every species has its own right to exist, and aesthetically, humans enjoy the beauty of nature
Question 17
true or false: The binomial scientific name assigned to a species is the same anywhere in the world.