4. A bacterium is suddenly expelled from a warm human intestine into the cold world outside (hey, it's been a cold December!). Which of the following adjustments might the bacterium make to maintain the same level of membrane fluidity? 1) Produce lipids with hydrocarbon tails that are longer and have fewer double bonds J) Produce lipids with hydrocarbon tails that are shorter and have more double bonds K) Decrease the amount of cholesterol in the membrane L) Decrease the amount of glycolipids in the membrane Answer: Explanation:

Q: In terms of their effect on the rate of diffusion, which of the following is the odd one out? a)…

A: The process by which molecules move from a region of higher concentration to a region of lower…

Q: 1. Indicate which statement is incorrect. a) Channel proteins are open from both sides so that…

A: introduction: The cell membrane can be easily traversed by small, nonpolar molecules. Polar…

Q: Where is the cell membrane located? 2. What is the function of the cell membrane? 3. What does…

A: 1. Location of Cell membrane: Cell membrane is located outside of all cells. In case of animals it…

Q: Compare and contrast gram + and gram - cell walls by explaining their similarities and differences.…

A: Bacteria are prokaryotic microorganisms and are not visible to the naked eye. They can survive in…

Q: 50. During an experiment, equal aliquots of Escher E. coli cells are disrupted, but there is minimal…

A: E. Coli: A rod-shaped, Gram-negative, facultative anaerobic coliform bacteria of the genus…

Q: For each salt concentration used in this exercise, indicate whether it represents an isotonic,…

A: Tonicity indicates the relative solute concentration dissolved in solution, thereby determining the…

Q: 1. Explain what effect an increase in surface area of the plasma membrane would have on the rate of…

A: The plasma membrane, also known as the cell membrane, is the membrane that divides the interior of…

Q: Water moves molecules passively across a cell membrane by: a)osmosis

A:

Q: 1) Cystic fibrosis is due to a defect in a pump of the cell membrane. Discuss the causes and…

A: Cystic fibrosis (CF) is a genetic disorder, which means it is transferred from parent to there…

Q: How do cells maintain the fluidity of their membranes? If a bacterium was growing at 20°C, how would…

A: The biological membranes of cell are selectively permeable. Fatty acids form an integral part of the…

Q: 1. Which of the following statements is true? Mitochondria likely originated from an aerobic…

A: Introduction :- Clathrin is a protein that plays a major role in shaping and forming vesicles in…

Q: Transport of maltose from the extracellular space to the cytoplasm of Gram-negative bacteria…

A: Gram-negative bacteria are a group of bacteria that do not retain the crystal violet stain used in…

Q: How does the presence of high concentrations of salt orsugars in food prevent growth of…

A: When a cell is placed in a hypertonic solution, there will be a net flow of water out of the cell,…

Q: Some antimicrobial agents imbed in membranes producing unregulated channels between the cell and its…

A: The lipid component of the outer membrane is impermeable to charged molecules because it is a…

Q: 4) Bacteria- and cells in general- are enclosed in a semipermeable membrane. Use this information to…

A: Adding sugar or salt is an age old technique for preservation of  food for long terms

Q: 11. Determine whether the following statements are true or false. If they are false, provide a…

A: Introduction  Cell transports are the movement of a molecule through the cell membrane. The chemical…

Q: Which molecule(s) would be expected to diffuse into a cell using passive transport? A) Carbon…

A: The molecules which can easily pass through the plasma membrane without the help of any transport…

Q: Movement of phospholipids to opposite sides is calleda) Facilitated diffusionb) Lateral diffusionc)…

A: Fluid-Mosaic membrane model is that the components of the bilayers are free to move. Lipids…

Q: Structural and functional features of the lysosomes include I. internal pH is higher than the…

A: Lysosomes are cell organelles that help in cellular digestion of foreign particles, food particles…

Q: Diffusion means that a)  smaller particles move across the membrane faster. b)  all particles…

A: The movement of particles from an area of higher concentration to an area of lower concentration…

Q: Trans bilayer diffusion is also calleda) Facilitated diffusionb) Lateral diffusionc) Flip flopd)…

A: Diffusion is the process of passing of the molecules through the cell membrane according to their…

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A: A cell membrane separates all cells from their surroundings. The cell membrane controls what enters…

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Q: 3. As the radius of a cell increases, which statement is true? Sphere surface area = A=4πr2 Sphere…

A: If the radius of cell is been increased to 3x, then its surface area will be increased to 9x and…

Q: Membrane proteins could not serve for:

A: Membrane proteins are the molecules that is involved in many main functions of the cell.

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A: Hypersonic solutions are those which have high concentration of salt in it.

Q: 32. Paracoccus denitrificans is a Gram-negative denitrifying bacterium capable of aerobic and…

A: Paracoccus denitrificans is a Gram-negative bacteria . Gram negative bacteria have periplasmic space…

Q: Type of Cell: Explanation:_

A: to identify a cell, safranin is used to colour them for proper visuality.

Q: Which of the following is related with getting the sodium ions inside the cell membrane 1_primary…

A: cell membrane is act as barrier to pass on the selected molecules pass through the membrane

Q: Typically, our cells have a high concentration of sodium ions outside and a low concentration of…

A: There are many proteins present in the cell membrane to transport substances across the cell…

Q: solute Outside the cell solute cell membrane protein carrier Inside the cell Changes in cell…

A: The cell needs a signal or stimuli in order to elicit a particular cellular response. There are…

Q: Passive Cellular Transport Assignment-Student Edition IV. The image below shows red blood cells…

A:

Q: Movement of phospholipids from side to side is calleda) Facilitated diffusionb) Lateral diffusionc)…

A: The fluid mosaic membrane model is that the components of the bilayer are free to move. In…

Q: List the differences between passive diffusion and facilitated diffusion.

A: Diffusion is defined as the migration of a chemical from a high-concentration area to a…

Q: The following table depicts the rate of transport of a molecule into a cell as the external…

A: In cell science, membrane transport alludes to the assortment of mechanisms that manage the passage…

Q: Biofilm is:

A: a) Biofilm is: a) a complex established community of microorganisms on solid surfaces   Explanation:…

Q: 1. In what type of environments can a microorganism be found? a. Which environment has many…

A: Microbiology is the study of microorganisms that are invisible to the naked eye. The microorganisms…

Q: Which of the following modes of transport across biological membranes is driven by a chemical…

A: The cell membrane is a phospholipid bilayer that allows the passage of small and non polar molecules…

Q: Which of the following is ABSENT in a Gram-positive cell envelope? plasma membrane O phospholipids…

A: Answer: There are two types of bacterial cells : Gram positive and Gram negative bacteria. These two…

Q: 1- One of the following diffusion paths is not driven by the concentration of sub: a- Primary active…

A: Introduction: Passive transport is a movement of biochemicals and other atomic or molecular…

Clinical Pharmacology

Pharmacology is a discipline of medicine that studies how medications interact with the systems and processes of living organisms, focusing on drug action mechanisms as well as therapeutic and other purposes.