How does crystal violet enhance the visualization of bacterial structure(s)?

1 answer:

8 0

The crystal violet molecules are trapped in the peptidoglycan layer of bacteria. For Gram-positive with a large peptidoglycan layer, the crystal violet molecules don't get washed off easily by the ethyl alcohol decolorizer (as it does in gram-negative bacteria) after staining. This makes it is possible to view the structure of the gram-positive bacteria after gram staining.

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Alenkinab [10]

Here are the missing options for the above question:
1. The bacterial culture in test tube D was diluted so much that no pink bacteria were left in the sample.

2. The pink bacteria were not able to get enough energy from the nutrient broth in test tube D to live.

3. The white bacteria outcompeted the pink bacteria for the nutrients in the broth in test tube D.

4. The pink bacteria are sediment growers in nutrient broth and the micropipette could not reach them.

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1. The bacterial culture in test tube D was diluted so much that no pink bacteria were left in the sample.

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Both intrasexual and intersexual selection usually cause changes in phenotypes for males and little changes in female phenotypes

saveliy_v [14]

The question is incomplete. Please read below to find the missing content.

Selection is usually strongest in the male of the species. D) because sperm are small and plentiful, while eggs are large and energy-rich.

Phenotype refers back to the observable traits of an organism as a multifactorial effect of genetic trends and environmental influences. The organism phenotype includes its morphological, biochemical, physiological, and behavioral residences.

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c. Males do not pass on their mitochondria and therefore have more invested in each individual mating event

d. Because sperm are small and plentiful, while eggs are large and energy-rich.

Learn more about phenotypes here brainly.com/question/902712

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