Whooping Cough is transmitted via Respiratory Droplets. The ______ Stage lasts 1-2 weeks, while the ______ Stage is characterized by severe coughing

Fill in the blank(s) with the appropriate word(s).


Catarrhal; Paroxysmal

Biology & Microbiology

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Similar to most amoebozoans, the forams and the radiolarians also have pseudopods, as do some of the white blood cells of animals (monocytes)

If one were to erect a taxon that included all organisms that have cells with pseudopods, the taxon would _____. A) be polyphyletic B) be paraphyletic C) be monophyletic D) include all eukaryotes

Biology & Microbiology

Which kind of sterilization procedure takes advantage of the size of microorganisms?

A. Open flame B. Filtration C. Use of chemicals D. Autoclaving

Biology & Microbiology

Which of the following is not true regarding the history of life on Earth?

A. The history of planet Earth includes alternations between colder periods ("icehouses") and warmer periods ("greenhouses") on the surface of the planet. B. The rise of more complex organisms such as eukaryotes has resulted in a reduction in diversity of more "primitive" organisms such as bacteria. C. There have been repeated incidents of mass extinction in the history of the planet in which species diversity has been reduced by 50% or more.

Biology & Microbiology

Specialized parenchyma cells, known as ________ cells, occur along with sieve-tube members.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology