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Marizza181 [45]
2 years ago
8

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

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Once you have stopped for a school bus, do not pass until the driver signals you to proceed, the red lights stop flashing,
DaniilM [7]
Once you have stopped for a school bus, do not pass until the driver signals you to proceed, the red lights stop flashing, or the bus starts moving ahead. Whenever a vehicle ahead of you stops to let  a pedestrian pass in front of you, you should stay in line and until the vehicle ahead proceeds. 
7 0
3 years ago
The length of linker DNA segments varies somewhat among organisms. The length of the linker DNA in sea urchin is 110 base pairs.
nasty-shy [4]

Answer:

362 nucleosomes

Explanation:

A nucleosome repeat is made up of the DNA (146 bp) wrapped around the core nucleosome particle and the linker DNA (110 bp as in this situation). We can conclude that, every repeat stands for 256 (146 + 110) base pairs of DNA.

We are given the length of the entire region to be 92,672 bp long,

To determine the number of nucleosomes to organize the region into the 10nm fiber structure

Let,

Number of nucleosomes =

the length of the entire region

------------------- -----

base pairs of DNA.

= 92,672

-------

256

= 362 nucleosomes

Therefore, 362 nucleosomes is needed to structure the region into the 10nm fiber structure.

5 0
3 years ago
Answer the following questions: a) Why did some of the komodo dragon's eggs not hatch? b) How many parents did this komodo drago
hichkok12 [17]

Answer:

Explanation:

Most female Komodo dragons lay eggs once per year, never more, sometimes less. However, like birds, Komodo dragon must also make a nest in which they lay their eggs. ... Eggs will then take up to 9 months (“like humans”) to develop before baby dragons are ready to hatch.

7 0
3 years ago
Why is it difficult to observe individual chromosomes with a light microscope during interphase?
asambeis [7]

Answer:

They have uncoiled to form long, thin strands.

Explanation:

Chromosomes are present in cell nucleus and consist of chromatin. Genes are present in linear order on chromosomes.  The chromosomes become visible under the microscope as distinct structures during cell division. When cells are not dividing, the chromosomes decondense to loose their individuality and make the mass of chromatin.  

Chromatin is complex of DNA and packing proteins. As the cells enter the prophase stage of cell division, condensation of chromatin occurs and individual chromosomes become visible under microscope. Before that (during interphase), chromosomes are not visible as they are present in decondensed form.

7 0
3 years ago
What are two types of cellular respiration
LenaWriter [7]

aerobic and anaerobic

3 0
3 years ago
Read 2 more answers
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