Why is it important to have a clean slide prior to staining?

What will be an ideal response?


Answer: To make sure that the bacteria on the slide is a pure culture and to make visualization of the bacteria as clear as possible.

Biology & Microbiology

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Which of the following features are used to identify chordates?

A. A notochord B. A hollow nerve cord C. A tail during embryonic development D. All of the above are features used to identify chordates.

Biology & Microbiology

An embryo impants in the uterus when it reaches the _______ stage of development.

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

Biology & Microbiology

To answer the following questions refer to the four items listed below.

A. This is any DNA made from mRNA transcripts. B. This is a nuclease whose function is to cut apart foreign DNA entering a cell. C. This is from a viral source and catalyzes reactions to construct DNA strands from mRNA. D. This is an enzyme used to produce DNA without introns. E. This is a collection of host cells that house cloned genomic DNA.

Biology & Microbiology

Which of the following shows the greatest promise as a cancer chemotherapy agent?

A) a drug that interferes with organismal cellular respiration B) a drug that prevents mitotic spindle from forming C) a drug that prevents crossing over D) a drug that prevents tetrad formation

Biology & Microbiology