Chemistry, 20.09.2019 04:30, tylorroundy

Murein lipoprotein is critical for maintaining the integrity of the gram-negative cell envelope and has potent immunostimulatory effects that are similar to bacterial endotoxin. which of the following is most likely responsible for the toxicity of murein lipoprotein? a. carboxylic acid group b. core oligosaccharide c. amino terminal triglycerided. m-diaminopimelic acid e. core 55-amino acid polypeptide

Answers: 3

Show answers

Answers

Lipid A, present as part of a Lipopolysaccharide complex in the outer membrane of gram negative bacteria cell walls, should be the answer, but it does not appear in the options included. As option C states “Amino terminal triglyceride”, and triglycerides are lipids, then we could explore this option. However, nothing is said about lipoproteins linked to Lipid A (that acts as an endotoxin) to mention carboxyl- or amino- terminals (options A and C), so I would consider the core oligosaccharide option as more probable (see below*).

Explanation:

Murein and peptidoglycan are names used to refer bacterial cell walls main component. This complex is mainly composed by disaccharide units composed of alterning N-acetyl-muramic acid (that contains the same structure of N-acetylglucosamine, plus a tetrapeptide) and N-acetyl-glucosamine, which form the backbone of the wall. These are responsible for the strength and shape of the cell. In Gram negative bacteria, an outer layer called outer membrane, as it contains an important amount of lipids, linked to other molecules, is also present. There, Lipid A is associated to a core oligosaccharide, and subsequently to the Antigen O (polysaccharide) forming Liposaccharides, wich stabilize and give strength to gram negative cell walls.

*Lipid A is the main responsible molecule for toxicity in these cell walls. As in question answer options, is included in B option “Oligosaccharide core”, which is closely linked to Lipid A, it could be the option to choose. Moreover, oligo saccharides are involved in toxicity responses in several microorganisms .

answered: sarah19Nursing

The answer is B. Core oligosaccharide

Explanation:

The central oligosaccharide is the one that is in charge of producing the highest toxicity of murein since it is incorporated into lipid A, which produces cellular toxicity in gram-negative cells. The oligosaccharide is made of an endotoxin that is released when immune cells begin to destroy gram-negative bacteria. The oligosaccharide is also responsible for maximum toxicity, recognizing antigens and starting with the reaction.

answered: Guest

b is the correct answer

mark me brainliest and hope this

answered: Guest

The answer is !

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 00:00, fooodluver4002

Newtons second law deals most cosely with

Answers: 1

continue

Chemistry, 22.06.2019 06:30, reecedstceklein

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?

Answers: 1

continue

Chemistry, 22.06.2019 10:30, kylemartinez13

Which characteristics can be used to differentiate star systems? check all that apply.

Answers: 2

continue

Chemistry, 23.06.2019 00:30, Toyared

Many bird species build nests in which they raise their offspring. one of these species is known as the magnolia warbler. breeding pairs of magnolia warblers build nests out of pieces of grass and twigs. the female warbler will then lay her eggs in the nest and sit on the eggs for a few weeks until they hatch. after the offspring have hatched, the female will continue to sit on the newborn chicks to keep them warm. both the male and the female bring food for the offspring to eat until the young are mature enough to find food on their own. which of these most likely describes why birds such as the magnolia warbler build nests in which to raise their offspring? a. nest building decreases the amount of energy used by the parent birds to raise their offspring to adulthood. b. nest building increases the probability that the offspring will survive and eventually produce offspring of their own. c. nest building decreases the amount of food that the offspring require the adult birds to provide. d. nest building increases the probability of the offspring being located by airborne predators.

Answers: 1

continue

Do you know the correct answer?

Murein lipoprotein is critical for maintaining the integrity of the gram-negative cell envelope and...