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Which of the following processes contributed to the diversity of the early eukaryotes?

A) serial endosymbiosis

B) horizontal gene transfer

C) binary fission

D) A and B are correct

E) all of the above contributed to protist diversity

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Nelly Stracke
Nelly StrackeLv2
29 Sep 2019

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Related questions

1) Protists are eukaryotes and possess which of the following characteristics? (select ALL correct answers)

A are found only in the digestive tracts of animals
B all have flagella
C a nuclear envelope
D reproduction by binary fission

2) Protists are eukaryotic organisms that are often unicellular, but some species are multicellular, and some are more closely related to ___ than they are to other protist lineages.

A archaea
B aliens
C plants, animals, or fungi
D bacteria

3) In a protist lifecycle where do you expect meiosis to occur?

A just prior to fertilization
B in a diploid cell
C in a haploid cell
D in the gametes

Every year, the viral strains included in vaccinations for the flu are slightly different, based on the prevalence of the strains present the previous year. Which of the following statements is TRUE regarding the vaccinations and the treatment of viral infections like the flu?

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When someone who is vaccinated encounters the virus they were vaccinated for, antigens are produced triggering destruction of the virus.
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Antibodies are built up in response to viral antigens, making those with vaccines more susceptible to viral infection.
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Viruses mutate quickly due to overuse of antibiotics.
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Vaccinations involve introducing an antigen of a virus into the immune system, which stimulates the production of antibodies.

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Reverse transcriptase inhibitors

The type of horizontal gene transfer that specifically requires a virus to transfer DNA from donor to recipient is called:

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transformation.
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conjugation.
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transduction.
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binary fission.

Binary fission differs from mitosis in that

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binary fission occurs in prokaryotes, and mitosis happens in eukaryotes.
B.

binary fission does not have a step to duplicate the genetic information, and mitosis does.
C.

binary fission creates daughter cells that are genetically identical to the parent cell, while mitosis introduces genetic variation.
D.

binary fission does not have a step to separate the parent cell into two daughter cells, and mitosis does.

Bacteria contain ______ in their cell walls, while Archaea contain _____ in their cell walls.

A.

chitin; peptidoglycan
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peptidoglycan; pseudopeptidoglycan
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pseudopeptidoglycan; peptidoglycan
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peptidoglycan; chitin
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Categorize each item as a HORIZONTAL or VERTICAL gene transfer event.

A. gaining a single new gene sequence from outside of the cell

B. mitosis to form two daughter cells

C. two haploid cells fusing to form a diploid cell

D. infection by a prophage containing a partial bacterial operon

E. binary fission of bacterial cell

F. uptake and insertion of a transposable element carrying foreign genes

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