Wild animals are a natural reservoir for Clostridium tetani
Indicate whether the statement is true or false.
Answer: FALSE
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What is the purpose of RNaseH in the making of cDNA?
A. It copies the mRNA into a complementary DNA strand. B. It reforms the sugar-phosphate backbone. C. It generates short RNAs that are used as primers D. It proofreads the cDNA for errors.
In precipitation tests, the antigen
A. -antibody complex settles to the bottom of the tube. B. is a whole cell. C. is a soluble molecule. D. is an insoluble molecule.
The Most Probable Number (MPN) method is used
A) to estimate numbers of cells in samples with a high density of bacterial cells. B) when samples contain obligate anaerobes. C) to estimate numbers of cells in samples with a low density of bacterial cells. D) to isolate autotrophic bacteria. E) to determine the generation time of bacterial isolates.
What is the advantage to the segmentation that is exemplified in the Phylum Annelida? Check all that apply.
A. Locomotion is more efficient. B. The importance of segmentation is unclear. C. Segments can be specialized. D. The annelid may still survive if one segment is damaged. E. Vital structures are repeated in each segment.