Yours

2.7: Section Two Review

OER - BIOL 2420 Laboratory Manual · LibreTexts

0%

Contents

    Text

    Size
    100%
    Theme
    Typeface
    Line length
    Spacing

    From LibreTexts, under CC BY 4.0, as the source states it; its equations are written in TeX, which the PDF shows typeset. This page at LibreTexts.

    Review Purpose

    This review helps you check what you learned in Section Two before moving on. Work through each question set on the pages that follow, then use the Click to reveal answer option to check yourself. These questions are for practice and self-assessment—they are not graded.

    Before you begin, can you...
    • Distinguish the basic bacterial shapes and identify the function of common bacterial cell structures?
    • Explain the purpose of the smear and of heat versus chemical fixation, and why specimens are stained?
    • Differentiate acidic and basic dyes, and describe what simple staining reveals about a sample?
    • Define differential staining and the terms primary stain, secondary stain, and mordant?
    • Describe the purpose of the Gram stain, its protocol, and its reagents (crystal violet, Gram's iodine, decolorizer, and safranin)?
    • Differentiate Gram-positive from Gram-negative reactions, interpret common sources of error, and explain the Gram stain's importance in disease detection and diagnosis?
    • Explain the purpose of the acid-fast stain, the role of mycolic acids, and name bacterial species that are acid-fast?
    • Distinguish an endospore from a vegetative cell, describe the endospore stain, and name endospore-forming pathogens and the diseases they cause?
    • Explain what a capsule is, why the capsule stain is a negative staining technique, and how capsules benefit the cell?

    This page titled 2.7: Section Two Review was last modified on Sat, 25 Jul 2026 03:42:51 GMT and is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by Sherry Smith.