In the Gram-stain procedure, Gram-negative, but not Gram-positive, cell wall structures are decolorized because

Biology

1 answer:

Elan Coil [88]2 years ago

5 0

Answer: because the structure of their cell wall is unable to retain the crystal violet stain

Explanation:

Due to differences in the thickness of a peptidoglycan layer in the cell membrane between Gram-positive and Gram-negative bacteria, Gram-positive bacteria (with a thicker peptidoglycan layer) retain crystal violet stain during the decolorization process, while Gram-negative bacteria lose the crystal violet stain

You might be interested in

The fibers of the iliocostalis muscle are divided into which three regions?

Sphinxa [80]

Answer:lumbar, thoracic and cervical

Explanation:

Iliocostalis muscles is the most inferior and lateral of the erector spinae muscles.

4 0

3 years ago

Cells responsible for histamine release

ladessa [460]

Answer:

Mast Cells

Explanation:

Mast cells release histamine in the blood stream, when they detect a substance that triggers an allergic reaction, also called an allergen.

3 0

2 years ago

Cultural evolution and biological evolution are similar in some ways. Important distinctions between them include:

Alenkasestr [34]

Answer:

i would go with b

Explanation:

Both are based on variation, heredity and selection, but how these appear and work differ. Biological evolution is unconscious, opportunistic and not goal-directed, while cultural evolution is conscious, at best planned, and can have a goal.

8 0

2 years ago

In what stage does the skin blister allowing bacteria to enter the site of the pressure ulcer

dimaraw [331]

I think it is stage 2
At stage two, the skin breaks open, wears away, or forms an ulcer, which is usually tender and painful. The sore expands into deeper layers of the skin. It may appear as a scrape, blister, or a shallow crater in the skin. At times this stage looks like a blister filled with clear liquid. Also at this stage some skin may be damaged beyond repair or may die.

3 0

3 years ago

The cell will enter the G1 phase. During this phase, proteins and nucleotides needed for DNA replication will be produced. Also,

kolbaska11 [484]

Answer and Explanation:

The interphase is the previous step before mitosis occurs. The interphase is conformed of the G1, S, and G2 stages.

During the G1 stage, it occurs a high intense biochemical activity. The cell duplicates its size, and the organelles and other molecules and cytoplasmatic structures duplicate too. Some structures, such as microtubules and actin filaments, are synthesized from zero. The endoplasmic reticulum increases in size and produces a membrane for the Golgi apparatus and vacuoles, lysosomes, and vesicles. During this stage, the pair of centrioles separate, and each centriole duplicates. Mitochondria and chloroplasts also replicate.

The stages S and G2 follow the G1. Once the whole interphase is completed, mitosis occurs.

During the S stage occurs the DNI replication process. At this point, it also occurs the synthesis of histones and other associated proteins. This is the only stage where the DNI molecule is replicated.

G2 stage is the final one before the cellular division. Here it begins the slow process of DNI condensation. Duplication of centrioles completes. Structures such as spindle fibers are assembled.

5 0

3 years ago