In Figure 4.3, Which Diagram Of A Cell Wall Is Resistant To Many Antibiotics (e.G., Penicillin)?

Which diagram of a cell wall is resistant to many antibiotics?

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Which of the following is NOT a distinguishing characteristic of prokaryotic cells They lack a plasma membrane.
In Figure 4.3, which diagram of a cell wall is resistant to many antibiotics (e.g., penicillin)? (smaller) gram-negative

Which cell wall has a structure that protects against osmotic lysis?

The peptidoglycan of the cell wall prevents osmotic lysis when water moves into the cell, but ONLY if the cell wall peptidoglycan is cross-linked. Anything which prevents the cross links from forming or which cuts the cross-links will weaken the peptidoglycan so that it no longer can prevent osmotic lysis.

Which cell wall contains porins?

Gram-positive bacteria lack outer membranes, so these porin channels are instead bound to specific lipids within the cell walls. Porins are also found in eukaryotes, specifically in the outer membranes of mitochondria and chloroplasts.

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What happens when a bacterial cell is placed in 5 NaCl?

it protects the cell in a hypertonic environment. Which of the following statements best describes what happens when a bacterial cell is placed in a solution containing 5% NaCl? Water will move out of the cell.

Why is no energy required in passive transport?

Why is no energy required in passive transport? The membrane physically moves the molecules. Transport proteins move the molecules, so no energy is required. The concentration gradient drives the movement.

What factors contribute to the rising incidence of antibiotic resistance?

Prevention and control. Antibiotic resistance is accelerated by the misuse and overuse of antibiotics, as well as poor infection prevention and control. Steps can be taken at all levels of society to reduce the impact and limit the spread of resistance.

Which would cause a bacterial cell to Plasmolyze?

Plasmolysis is the process in which cells lose water in a hypertonic solution. The reverse process, deplasmolysis or cytolysis, can occur if the cell is in a hypotonic solution resulting in a lower external osmotic pressure and a net flow of water into the cell.

Do gram negative bacteria have a cell wall?

Gramnegative bacteria are surrounded by a thin peptidoglycan cell wall, which itself is surrounded by an outer membrane containing lipopolysaccharide.

Does eukarya have a cell wall?

Many kinds of prokaryotes and eukaryotes contain a structure outside the cell membrane called the cell wall. Among the eukaryotes, some protists, and all fungi and plants, have cell walls. Cell walls are not identical in these organisms, however. In fungi, the cell wall contains a polysaccharide called chitin.

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Does gram positive have a cell wall?

The cell walls of gram positive bacteria are composed predominantly of peptidoglycan. In fact, peptidoglycan can represent up to 90% of the cell wall, with layer after layer forming around the cell membrane.

Do bacteria have a cell wall?

The cell membrane is surrounded by a cell wall in all bacteria except one group, the Mollicutes, which includes pathogens such as the mycoplasmas. The composition of the cell wall varies among species and is an important character for identifying and classifying bacteria.

Which is present in cell wall of bacteria?

The major component of the bacterial cell wall is peptidoglycan or murein. This rigid structure of peptidoglycan, specific only to prokaryotes, gives the cell shape and surrounds the cytoplasmic membrane.

What happens when a Gram-positive bacteria is placed in distilled water and penicillin?

Which statement best describes what happens when a grampositive bacterium is places in distilled water and penicillin? No change will result; the solution is isotonic. Water will move into the cell. Water will move out of the cell.

What occurs if a bacterial cell is placed in a 15 NaCl solution with penicillin?

microbiology

Question Answer
What occurs if a bacterial cell is placed in a 15% NaCl solution with penicillin? The cell will plasmolyze
The cell walls of gram-positive bacteria contain Teichoic acid
Mycoplasmas are thought to be protected from lysis by Sterols

What will happen if a bacterial cell is pretreated with a lysozyme solution?

What will happen if a bacterial cell is pretreated with a lysozyme solution, then placed in distilled water? The cell will undergo osmotic lysis.

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