Which of the following is true about Euglena? 

A. They belong to the same phylum as Paramecium.
B. They do not have flagella.
C. They have a pellicle.
D. They lack chloroplasts.
E. They have sexual reproduction.


C. They have a pellicle.

Biology & Microbiology

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Which enzyme is a topoisomerase?

A. DNA polymerase I B. DNA polymerase III C. DNA gyrase D. DNA ligase

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The use of selected culture media and incubation conditions to isolate microorganisms from samples is known as a(n)

A) differential culture. B) selective culture. C) enrichment culture. D) sensitive culture.

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Organisms that produce all of their offspring in a single event are

A. always successful. B. never successful. C. autogenous. D. semelparous. E. iteroparous.

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Homologous chromosomes are held together in the

A) synaptonemal complex. B) centromere. C) kinetochore. D) nucleus. E) MTOC

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