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asciandwildlifebio
asciandwildlifebio, Graduate Student
Category: Homework
Satisfied Customers: 1528
Experience:  M.S. Bio, B.S. in Animal Science and Wildlife Biology. Comprehensive Spanish Written and Oral Skills
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is there any expert in biology

Customer Question

is there any expert in biology?
Submitted: 2 years ago.
Category: Homework
Expert:  asciandwildlifebio replied 2 years ago.
Hello! Please post your question so I can better assist you!
Customer: replied 2 years ago.

Marks: --/1
Of the following taxonomic levels, species found within the same ______ are the most closely related.
Choose one answer.
a. class
b. phylum
c. domain
d. order
e. family
Expert:  asciandwildlifebio replied 2 years ago.
E. Family

This is the correct answer. Please click the green button so I receive credit for my work.
asciandwildlifebio, Graduate Student
Category: Homework
Satisfied Customers: 1528
Experience: M.S. Bio, B.S. in Animal Science and Wildlife Biology. Comprehensive Spanish Written and Oral Skills
asciandwildlifebio and 8 other Homework Specialists are ready to help you
Customer: replied 2 years ago.

Marks: --/1
Graphically, the graduated model of speciation can be described as appearing as a ______.
Choose one answer.
a. W
b. vertical line with horizontal branches
c. V
d. Y
e. horizontal line with vertical branches
Customer: replied 2 years ago.

Marks: --/1
Which of the following are most closely related to plants?
Choose one answer.
a. cellular slime molds
b. amoebas
c. forams
d. green algae
e. diatoms
Expert:  asciandwildlifebio replied 2 years ago.
THIS ANSWER IS LOCKED!
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Expert:  asciandwildlifebio replied 2 years ago.
THIS ANSWER IS LOCKED!
You can view this answer by clicking here to Register or Login and paying $3.
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Customer: replied 2 years ago.

Marks: --/1
According to the theory of endosymbiosis, which organelles evolved from small prokaryotes that established residence within other, larger prokaryotes?
Choose one answer.
a. nucleoli and chromosomes
b. vacuoles and lysosomes
c. mitochondria and chloroplasts
d. centrioles and ribosomes
e. Golgi apparatus and endoplasmic reticulum
Customer: replied 2 years ago.
9
Marks: --/1
A photoautotrophic unicellular organism with a shell made of silica is most likely a( n ) ______.
Choose one answer.
a. diatom
b. dinoflagellate
c. amoeba
d. foram
e. apicomplexan
Customer: replied 2 years ago.
On what basis are populations assigned to the same biological species?
Choose one answer.
a. relating to the environment in the same way
b. having 99% of their genes in common
c. sharing a common ancestor
d. being able to interbreed and produce fertile offspring
e. a very similar appearance
Customer: replied 2 years ago.

Marks: --/1
In the soil, some ______ convert nitrogen to a form that can be used by plants.
Choose one answer.
a. protozoans
b. prokaryotes
c. protists
d. animals
e. fungi
Expert:  asciandwildlifebio replied 2 years ago.
THIS ANSWER IS LOCKED!
You can view this answer by clicking here to Register or Login and paying $3.
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Customer: replied 2 years ago.

Marks: --/1
Speciation requires ______.
Choose one answer.
a. a mass extinction so that new environmental opportunities will be available to the survivors
b. geographic isolation
c. genetic isolation
d. periods of rapid evolutionary change
e. long periods of time
Customer: replied 2 years ago.

Marks: --/1
Which kingdom(s) was(were) the first to colonize land?
Choose one answer.
a. Plantae and Fungi
b. Monera and Protista
c. Monera
d. Archaea
e. Protista and Fungi
Customer: replied 2 years ago.
Dinosaurs (aside from the lineage that produced birds) were extinct by the end of the ______.
Choose one answer.
a. Silurian
b. Eocene
c. Devonian
d. Permian
e. Cretaceous
Customer: replied 2 years ago.

Marks: --/1
Seedless plants were most diverse during the ______ period.
Choose one answer.
a. Triassic
b. Carboniferous
c. Jurassic
d. Mesozoic
e. Cretaceous
Customer: replied 2 years ago.

Marks: --/1
Cladistic analysis identifies clades on the basis of ______.
Choose one answer.
a. analogous structures unique to each group
b. homologous structures unique to each group
c. last appearance in the fossil record
d. first appearance in the fossil record
e. the ability to interbreed and produce fertile offspring
Customer: replied 2 years ago.

Marks: --/1
Which of the following correctly illustrates the sequence of the origin of modern groups of plants?
Choose one answer.
a. ferns, gymnosperms, bryophytes, angiosperms
b. bryophytes, ferns, gymnosperms, angiosperms
c. ferns, gymnosperms, angiosperms, bryophytes
d. gymnosperms, ferns, bryophytes, angiosperms
e. bryophytes, ferns, angiosperms, gymnosperms
Customer: replied 2 years ago.
The current geological era is the ______.
Choose one answer.
a. Precambrian
b. Paleozoic
c. Cambrian
d. Cenozoic
e. Mesozoic
Expert:  asciandwildlifebio replied 2 years ago.
Yarinha,
Please let me know that you understand that each of these questions counts as a separate answer??
Customer: replied 2 years ago.
Which of the following lack vascular tissue?
Choose one answer.
a. ferns
b. mosses
c. flowering plants
d. grasses
e. cone-bearing plants
Customer: replied 2 years ago.

Marks: --/1
Which of the following include the two classes of poisons produced by pathogenic bacteria?
Choose one answer.
a. bacilli and cocci
b. prokaryotes and eukaryotes
c. protozoans and fungi
d. chemoautotrophs and chemoheterotrophs
e. exotoxins and endotoxins
Customer: replied 2 years ago.

Marks: --/1
Uranium-235, with a half-life of 713,000,000 years, decays to lead-207. If a rock sample is determined to have one-quarter of the uranium-235 content it had when it formed, the age of the rock sample can be estimated to be approximately ______ years old.
Choose one answer.
a. 178 million
b. 713 million
c. 28.5 billion
d. 178 billion
e. 1.4 billion
Customer: replied 2 years ago.

Marks: --/1
The science of naming, identifying, and classifying organisms is called ______.
Choose one answer.
a. biogeography
b. specification
c. zoography
d. taxonomy
e. phylogeny
Customer: replied 2 years ago.

Marks: --/1
Large amounts of oxygen gas appeared in Earth's atmosphere about ______ years ago.
Choose one answer.
a. 200 million
b. 1.7 billion
c. 2.0 billion
d. 2.7 billion
e. 4.5 billion
Customer: replied 2 years ago.

Marks: --/1
A pollen grain is a ______.
Choose one answer.
a. female gametophyte
b. sporophyte
c. type of seed
d. megaspore
e. male gametophyte
Customer: replied 2 years ago.
Which of the following would likely be the most difficult to kill were you to can your own food?
Choose one answer.
a. sporophytes
b. endospores
c. megaspores
d. sporophylls
e. microspores
Customer: replied 2 years ago.
What global climatic change gave gymnosperms an advantage over ferns?
Choose one answer.
a. the climate becoming hotter and wetter
b. increased fluctuations in global climate
c. the climate becoming cooler and wetter
d. the climate becoming hotter and drier
e. the climate becoming cooler and drier
Customer: replied 2 years ago.

Marks: --/1
Why are ferns considered incompletely adapted to the terrestrial environment, when compared with other plants?
Choose one answer.
a. They lack flowers.
b. Their sperm are flagellated.
c. They lack vascular tissue.
d. They lack gametangia.
e. The gametophyte generation is dominant.
Customer: replied 2 years ago.

Marks: --/1
Which of the following taxonomic levels is most inclusive?
Choose one answer.
a. species
b. family
c. genus
d. class
e. order
Customer: replied 2 years ago.

Marks: --/1
Spherical bacteria that occur in clusters are ______.
Choose one answer.
a. staphylococci
b. spirochetes
c. streptococci
d. bacilli
e. spirilla
Customer: replied 2 years ago.

Marks: --/1
Exploring in the tropics, you discover a nonvascular plant that produces pollen. What type of plant have you discovered?
Choose one answer.
a. a fern
b. a bryophyte
c. an angiosperm
d. an entirely new type that you will get to name
e. a gymnosperm
Customer: replied 2 years ago.

Marks: --/1
From the point of view of an angiosperm, what is the function of fruit?
Choose one answer.
a. It provides nutrients to germinating seeds.
b. It attracts pollinators.
c. It provides structural support for the plant.
d. It is where the male gametophyte develops.
e. It is a mechanism for the dispersal of seeds.
Customer: replied 2 years ago.

Marks: --/1
Which of the following is a component of the female structure of a flowering plant?
Choose one answer.
a. anther
b. petal
c. stamen
d. stigma
e. filament
Customer: replied 2 years ago.

Marks: --/1
In angiosperms, the male gametophyte develops within ______.
Choose one answer.
a. archegonia
b. mycelia
c. anthers
d. filaments
e. male cones
Customer: replied 2 years ago.

Marks: --/1
Earthquakes are the result of ______.
Choose one answer.
a. the movement of continental plates against one another
b. large buildings destabilizing Earth's surface
c. global warming
d. the sun's pull on Earth
e. massive explosions occurring beneath Earth's surface
Customer: replied 2 years ago.

Marks: --/1
Mutualistic associations of plant roots and fungi are called ______.
Choose one answer.
a. myrmecochores
b. mycophyta
c. pneumatophores
d. mycelia
e. mycorrhizae
Customer: replied 2 years ago.

Marks: --/1
Under ideal conditions, prokaryotes are capable of reproducing at a( n ) ______ rate.
Choose one answer.
a. inverse
b. infinite
c. hypergeometric
d. exponential
e. arithmetic
Customer: replied 2 years ago.
37
Marks: --/1
Why is RNA thought to have been the first genetic material?
Choose one answer.
a. Primitive organisms, such as some viruses, have RNA as their genetic material.
b. RNA codes for fewer amino acids than does DNA.
c. RNA is capable of self-replication; DNA is not.
d. RNA has been found on meteorites; DNA has not.
e. RNA is structurally simpler than DNA.
Customer: replied 2 years ago.

Marks: --/1
In ______ the gametophyte is more obvious than the sporophyte.
Choose one answer.
a. conifers
b. ferns
c. grasses
d. angiosperms
e. mosses
Customer: replied 2 years ago.
39
Marks: --/1
Analogous structures are evidence of ______.
Choose one answer.
a. convergent evolution
b. common ancestry
c. stabilizing selection
d. paedomorphosis
e. divergent evolution
Customer: replied 2 years ago.
Nutritionally, all fungi are ______.
Choose one answer.
a. heterotrophs
b. parasites
c. chemoautotrophs
d. autotrophs
e. pathogens
Customer: replied 2 years ago.
ariation among pre-cells was due to ______.
Choose one answer.
a. mutation
b. natural selection
c. the bottleneck effect
d. genetic drift
e. artificial selection
Customer: replied 2 years ago.
Some fish have bony fins. If the body of water they are in dries out, these fins can be used to help the fish "walk" to another body of water. In this context, bony fins are an example of ______.
Choose one answer.
a. paedomorphosis
b. neoteny
c. an exaptation
d. an evolutionary novelty
e. punctuated evolution
Customer: replied 2 years ago.

Marks: --/1
Which of the following would be an example of paedomorphosis?
Choose one answer.
a. rapid evolution in a small, isolated population
b. starfish regenerating severed limbs
c. two species evolving a similar appearance
d. the ability to reproduce evolving in caterpillars
e. speciation as a result of a change in the number of sets of chromosomes
Customer: replied 2 years ago.
Relist: Answer came too late.
Customer: replied 2 years ago.

Marks: --/1
Flagellates, amoebas, apicomplexans, and ciliates are all what type of protist?
Choose one answer.
a. diatoms
b. protozoans
c. dinoflagellates
d. slime molds
e. seaweeds
Expert:  asciandwildlifebio replied 2 years ago.
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