Which of the following is ABSENT in a Gram-positive cell envelope? plasma membrane O phospholipids LPS layer glycan chains lipoteichoic acids all of these are PRESENT in a Gram-positive cell envelope Question 4 Which of the following is ABSENT in a Gram-negative cell envelope? O lipoteichoic acids plasma membrane Opeptidoglycan- lipapolysaccharides

Phospholipids will spontaneously form bubbles of bi-layer when put into water. Why do they do this? Why is this shape particularly energetically favorable?

Could you please let me know what chemical it would be?

Where are phospholipids most likely found in a prokaryotic cell? O the plasma membrane O ribosomes O flagella O the plasma membrane and organelles O organelles

The compound illustrated below is an antibiotic able to transport the ions across the cell membrane. Considering the structure of the molecule, explain why it is able to carry out this task.

What wavelengths of electromagnetic radiation possess sufficient energy to be antimicrobicidal? Greater than 1000 nm Less than 0.1 nm Less than 300 nm Greater than 700 nm None of the answer choices

10% NaCl solution presents a more environment than a 5% NaCl solution. isotonic O hypotonic hypertonic none of the above

How does a phospholipid bilayer droplet with an aqueous center differ from a cell

Choose the best answer 1) If the lipid bilayer in Section B represents the plasma membrane, which part of the protein is the cytoplasmic domain? There is no way to tell which is the cytoplasmic domain with the information given. Section A is the cytoplasmic domain since it contains disulfide bonds. Section C is the cytoplasmic domain since the N-terminus is always found in the cytoplasm. Section C is the cytoplasmic domain since glycosylation cannot occur on the cytoplasmic domain. Section B is the cytoplasmic domain since it is an alpha-helix.  2) Which type of amino acids is most commonly found in Section B? Hydrophilic Hydrophobic There is no way of knowing which type of amino acids is most commonly found in Section B with the given information Charged 3) If the lipid bilayer in Section B represents the ER membrane, which part of the protein is found INSIDE the ER (in the ER lumen)? The entire protein must be inside the lumen of the ER. Section C is inside the ER…

Which of the following is never used to make cell walls? Group of answer choices 1peptidoglycan 2amino acids 3lipids 4chitin 5cellulose