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Gelneren [198K]
3 years ago
7

Bacteria classified as GRAM+contain MANY layers.

Biology
2 answers:
posledela3 years ago
5 0

Answer:

4. Peptidoglycan

Explanation:

"Most bacteria can be broadly classified as Gram positive or Gram negative.

Gram positive bacteria have cell walls composed of thick layers of peptidoglycan.

Gram positive cells stain purple when subjected to a Gram stain procedure.

Gram negative bacteria have cell walls with a thin layer of peptidoglycan. The cell wall also includes an outer membrane with lipopolysaccharide (LPS) molecules attached."

Reference: Bailey, Regina. “Gram Positive vs. Gram Negative Bacteria.” ThoughtCo, ThoughtCo, 15 Oct. 2018

Yakvenalex [24]3 years ago
4 0

Answer:

The correct answer is number 4. Peptidoblycan

Explanation:

  These bacteria, when performing the Gram staining technique, have a violet or dark blue stain. Gram-positive organisms are able to retain the violet dye due to the large amount of peptidoglycan in their cell wall. Cell walls of gram-positive organisms usually lack the peripheral membrane present in gram-negative bacteria.

  Peptidoglycan, also called murein, is a peptide-bound heteropolysaccharide present in the prokaryote cell wall. It is formed by two types of sugars (N-acetylmuramic acid and N-acetylglucosamine) and some amino acids.

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Select ALL the correct answers. Based on these images, what can you say about the tentacles of an octopus and the limbs of a liz
slamgirl [31]

Tentacles of an octopus as well limbs of a lizard are analogous structures.

Analogous structures or organs perform the same function in different organisms that bear no resemblance to each other anatomically. Analogous structures are formed as a result of convergent evolution, i.e. different structures evolving for the similar function and thus having similarity. Tentacles of an octopus as well as limbs of a lizard are used for the similar function, i.e. locomotion in this case.

On the other hand, homologous structures result from divergent evolution. Homologous organs contain a similar basic structure but perform distinct functions in different organisms.

To learn more about Homologous organs here

brainly.com/question/14963404

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4 0
10 months ago
Which of the following may cause allergies? Animal dander Exercise Poor sleep Stress
malfutka [58]
Animal dander would be the answer you're looking for. 
 
Hope this helps :)

4 0
3 years ago
Read 2 more answers
How does the pharynx help maintain homeostasis?
Pie
<span>By filtering the air so that the lungs so the lungs don't get infected</span>
5 0
3 years ago
What are the negative consequences of improper disposal of electronic waste?​
Gre4nikov [31]

Answer:

1) Increased probability of hazardous chemical contamination.

2) Air, water, and soil pollution.

3) Mortality in both terrestrial and aquatic organisms.

4) Development of diseases in humans.

Explanation:

The improper disposal of electronic waste can have detrimental consequences for the environment and, as a result, to all living beings including humans.

If electronic waste is thrown away in an open area, it warms up and releases hazardous chemicals that are detrimental for the health of living beings. This occurs because <u>electronic objects contain toxic chemicals such as lead, mercury, cadmium, amongst others</u>.

These chemicals will eventually enter both soil and water, harming thousands to millions of terrestrial and aquatic organisms. Moreover, these chemicals will enter the food chain and, as humans consume these affected organisms, we are also affected in numerous ways. For example, ingesting these chemicals could cause reproductive issues, damage to both the nervous and digestive systems, the development of cancer, etc.

4 0
3 years ago
Match the description of each plants with the group to which the plant belongs. (Match each number to a letter please!)
Hoochie [10]

The right matches are :

A. bryophyte  ==> 3.

B. pteridophyte  ==> 2.

C. gymnosperm  ==> 1.  

D. angiosperm  ==> 4.


These four types of plants are cormophytes.

Bryophyte is a terrestrial plant belonging to the family Bryophyta, which does not have a real vascular system.

Gymnosperms are the first order of didynamy containing phanerogamous plants whose eggs are not enclosed in closed carpels.

Angiosperms are plants whose seeds are enclosed in a closed ovary.

Pteridophytes produce neither flowers nor seeds but are vascular plants.


7 0
3 years ago
Read 2 more answers
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