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Leni [432]
3 years ago
6

Homework. Unanswered

Biology
1 answer:
Dennis_Churaev [7]3 years ago
6 0

Gram-positive bacteria are bacteria that have thick cell walls which yield positive results in the Gram staining test. Lipoteichoic acid is a major component of the cell wall of gram-positive bacteria.

  • All bacteria indicated in the question can be classified by the Gram staining test:
  1. Actinomycetes are Gram-positive bacteria
  2. The genus <em>Arthrobacter </em>includes Gram-positive bacteria
  3. <em>Escherichia coli </em>(<em>E. coli</em>) is a Gram-negative bacterium
  4. <em>Staphylococcus spp.</em> are Gram-positive bacteria
  5. <em>Bacillus spp</em> are Gram-positive bacteria
  6. <em>Mycobacterium spp.</em> are Gram-positive bacteria

  • Prokaryotes can be divided into two domains: Bacteria and Archaea.

  • Gram staining is a method used to classify bacteria, but this method IS NOT USED to stain Archaea.

  • In consequence, I would not use the Gram test to stain Archaebacteria because Archaebacteria aren't bacteria (Option A is correct).

  • Archaebacteria belong to the Archaea domain.

Learn more in:

brainly.com/question/13756030?referrer=searchResults

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Explanation:

Dispersion and vicariance are the processes by which speciation is generated in biogeography.

A phylogeny represents the evolutionary relationships between different species.

In this phylogeny, species 5, 1, 6 and 3 originated from vicariance processes, and their position in the phylogenetic tree is due to the order of separation of the mentioned regions. Species 2 and 4 originated from dispersal processes, and are expected to have a closer evolutionary relationship with the species that were in the areas from which they were dispersed, in this case, with Africa and Australia respectively.

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3 years ago
Look at the picture. Identify 3 safe behaviors and 3 unsafe behaviors.
Ludmilka [50]

Answer:

Unsafe: Boy in top right using the microscope near the window

Unsafe: boy in the front saying oww.

Unsafe: boy behind the boy saying oww hitting another kid over the head.

Explanation:

I had this exact assignment two years ago, however, those are all that I can remember, and it is very hard for me to see what is going on, so I am sorry that I could not be of more help.

4 0
3 years ago
BLANK blood contains the rhesus protein.<br><br> a) Rh+<br> b) Rh-
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3 0
3 years ago
If a somatic parent cell, such as a skin cell, divides to create two identical daughter cells, how much DNA will be present in e
11111nata11111 [884]

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7 0
3 years ago
Do animals have the right to a certain quality of life?
Bingel [31]

Explanation:

All Animals have EVERY right to a good quality of life! It is humans with a typical human arrogance that decide who lives, who dies, who is food and who is not and how they will live and be killed. We even have Animal Protection laws for dogs, cats and “pets” and farm animals are treated like dirt, having very few protections! If you did to your dog what you do to pigs you would go to jail! Discrimination and arrogance taken to the nth degree! Since humans subject Animals to the existence humans choose and nobody ever asked a cow, a pig, a hen or any other animal how they want to live their life I think it can qualify as “Slavery”.

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