To View Bacteria Present on a Smear,it First Must Be

question 21

Multiple Choice

To view bacteria present on a smear,it first must be

• A)stained with an appropriate dye.
• B)immersed in alcohol for 15 to 20 minutes.
• C)incubated for 24 hours.
• D)allowed to air dry for 10 minutes.

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Definitions:

Gymnosperms

A group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes, characterized by their naked seeds not enclosed in an ovary.

Angiosperms

A large group of plants characterized by having flowers and producing seeds enclosed within a fruit.

Xylem

Complex vascular tissue of plants; cell walls of its dead tracheids and vessel elements form tubes that distribute water and mineral ions through the plant body.

Tracheids

Component of xylem. Tapered cells that die when mature; pitted walls that remain interconnect with other tracheids to form water-conducting tubes.