Period: 6. You do a gram stain on the same bacteria above and notice its purple,

Question

Period: 6. You do a gram stain on the same bacteria above and notice its purple, this means: a. The bacteria has a thick peptidoglycan layer b. The bacteria has no peptidoglycan layer c. The bacteria has a medium peptidoglycan layer d. Gram stains test viruses, not bacteria hat st ructure A bacterial cell senses a lack of water, food and growing amounts of poison. W should it make to survive? 7. a. Meiosis b. Endospore C. DNA d. Gram Stain 8. Bacteria are called chemical recyclers. Without them recycling the world would probably: a. b. c. d. Be fine, we have other organisms to recycle chemicals. Be overrun with dead organic material Have no basic materials to make new organisms B and C

Explanation / Answer

(6)a.The bacteria has a thick peptidoglcan layer.

Gram-negative organism have thin peptidoglycan layer in contrast to gram-positive bacteria that possess thick peptidoglycan layer. After decolorization step during gram staining, the Gram-positive cell remains purple and the Gram-negative cell loses its purple colour.

(7)b.Endospore

Endospores are resistant to desiccation

(8)d.B and C

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