. A. Many bacterial fatty acids contain branches and even rings. What effect would you expect these lipids to have on membrane fluidity compared to their straight-chain counterparts? B. When bacteria growing at 20°C are heated to 30°C, are they more likely to synthesize membrane lipids with (a) saturated or unsaturated fatty acids, and (b) short-chain or long-chain fatty acids? Explain your answers.

Q: Explain the impact of unsaturated fatty acid tails, cholesterol, and temperature on membrane…

A: Cholestrol in cell membrane: It restrains the flow of phospholipids, making the membrane less…

Q: 23. The cell membrane is made of a bilayer of... A. triglycerides with their nonpolar tails facing…

A: A cell is the single basic component of life as it contains all the vital molecules for sustaining…

Q: 11. Which of the following phospholipids is localized to a greater extent in the outer leaflet of…

A: The distribution of phospholipids in the membrane lipid bilayer is asymmetric, meaning that certain…

Q: Indigenous populations of Southern Africa have traditionally eaten a spiny succulent plant called…

A: Plasma membranes are made up of gylcerophospholipids, i.e. they comprise a glycerol molecule which…

Q: 1. Draw the structure of  phosphatidic acid. Circle the polar parts of the molecule and box the…

A: Phosphatidic acid consists of a glycerol backbone, with, in general, a saturated fatty acid bonded…

Q: 5. Consider the fatty acid. Which of the designations are accurate for the fatty acid? -O O A) (0-6…

A: Fatty acids are the monomer units for the lipid biomolecules. Fatty acids are classified into…

Q: a) Describe the structure of cholesterol and state the function in the cell membrane component. b)…

A: The cell membrane is a thin, semi-permeable membrane that envelopes a cell and controls its internal…

Q: 4. Amphiphilic Lipids. Detergents are small amphiphilic molecules that tend to form micelles in…

A: Ionic detergents contain anionic or cationic head group long with their hydrophobic tails being…

Q: Which one of the following statements comparing alpha keratin and silk fibroin is a true statement?…

A: Introduction: Alpha-keratins are proteins that form tough fibers and are found in hair, nails, and…

Q: Describe the macromolecular and biophysical characteristics of collagen in the extracellular matrix…

A: There are few points to know about collagen.  It is the major structural protein in the…

Q: Which statement is correct about the phospholipids in membranes? a) The non-polar tails face…

A: Introduction :- Phospholipids are a type of lipid molecule that is a major component of cell…

Q: tein do you have? Peripheral (extrinsic) A protein covalently anchored to membrane fatty acids…

A: There are different types of proteins attached to the cell membrane along with fatty acids.…

Q: Adipocytes store fat in phospholipid-coated droplets in the cytosol. The protein perilipin is also…

A: Perilipin is also known as the lipid-droplet –associated protein. Perilipin belongs to a family of…

Q: Cholesterol serves several essential functions in mammalian cells. Which of the following properties…

A: Cholesterol is a type of lipid with a steroid nucleus. It provides stability to the plasma membrane…

Q: Statements:(1) Fats and oils have the same general chemical structure.(2) Biological waxes have a…

A: In science, fat normally implies any ester of unsaturated fats or a combination of such mixes; most…

Q: c) What part or parts of a cellular membrane play(s) a role in determining the fluidity of the…

A: Consists of a single phosphate head, and two fatty acid tails. All hydrophilic heads are on the…

Q: 1. Will the water penetrate all through the sandwich? Explain. 2. Explain which layer(s) of the…

A: The sandwich or lipo-protein sandwich model explained that cell membranes contain both proteins and…

Q: which of the following is correct about protein hydration? a- hydrophobic pathces are hydrated…

A: Proteins are composed of the twenty standard amino acids attached via peptide bonds. These twenty…

Q: Read This! When phospholipids are added to an aqueous environment (consisting mostly of water) the…

A: Introduction  Cells are box or chamber-like structures containing fluid cytoplasm enclosed by…

Q: Which factor will increase the fluidity of the lipid bilayer? a) decreasing the number of…

A: Introduction  Membrane fluidity refers to the ability of the lipid bilayer in biological membranes…

Q: 5. Which of the following membrane lipids does not contain fatty acid tails? Explain what the…

A: Introduction: Membrane lipids are amphipathic, meaning they have two ends—one polar and hydrophilic…

Q: Would you expect this molecule to spontaneously assemble into a liposome? Why or why not? CH2−O CH-O…

A: There are four classes of biological macromolecules- nucleic acid, proteins, lipids and…

Q: (a) What is the amount of cellulose in plant cell? Describe the molec- ular structure of cellulose.…

A: Cellulose is a naturally occurring chemical molecule that is required by plants. Cellulose is a…

Q: Select all false statements about pentose phosphate pathway. Glucose-6-phosphate is common to…

A: Pentose phosphate pathway is also called as the hexose monophosphate pathway. It is an alternative…

Q: Explain how membrane lipids self-assemble into bimolecular sheets.

A: The basic structure of the plasma membrane is the lipid bilayer. This bilayer is composed of two…

Q: Positively charged molecules are often more easily endocytosed by cells than negatively charged…

A: Endocytosis is a cellular process in which substances are brought into the cell. The material to be…

Q: Write 2 (any) functions of membrane carbohydrates and explain the functions.

A: The carbohydrates in the cell membrane are chemically bonded to glycoproteins and glycolipids. Some…

Q: Other cell membrane molecules include a compound called  __________, which functions to provide…

A: According to the fluid mosaic theory, the plasma membrane is made up of a variety of phospholipids,…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.