Biology Biology Practice Problems Solutions Library

Fluid Mosaic Model Solutions Library

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22 solutions

Fluid Mosaic Model

Q. Among the following, which amino acid is least likely to occur in the membrane crossing segments of a protein.A. leucine (L)B. leucine (L)C. isoleu...

Solved • Sep 10, 2018

Fluid Mosaic Model

Q. List 2 reasons why it is crucial that the cell membrane exhibit fluidity rather than be rigid.

Solved • Aug 6, 2018

Fluid Mosaic Model

Q. Which of these is a general feature of the lipid bilayer in all biological membranes?A. Na+ and K+ ions readily diffuse across the bilayer.B. Indiv...

Solved • Aug 1, 2018

Fluid Mosaic Model

Q. Yeast strain X has ergosterol in its membranes, while yeast strain Z does not incorporate ergosterol into its membranes. These two yeast strains gr...

Solved • Jul 25, 2018

Fluid Mosaic Model

Q. Why are membranes referred to as Fluid Mosaics? What does this mean at a molecular level?

Solved • Jun 13, 2018

Fluid Mosaic Model

Q. Which of the following statements are true? Select all correct answers. a. A plant that produces more monounsaturated fatty acids than polyunsatura...

Solved • Jun 8, 2018

Fluid Mosaic Model

Q. It is said that ribonucleotides can diffuse through some types of liposomes. It is likely that the lipids present early in chemical evolution had s...

Solved • Nov 15, 2017

Fluid Mosaic Model

Q. When phospholipids are mixed with water their ____ interact with water and their ____ are repelled, forming a lipid bilayer. a. Hydrophobic heads, ...

Solved • Aug 2, 2017

Fluid Mosaic Model

Q. A cell membrane is not: a. A fluid structureb. A rigid structurec. A mosaic structured. A bilayered structuree. Composed of phospholipid molecules

Solved • Aug 2, 2017

Fluid Mosaic Model

Q. A phospholipid molecule:  a. Has a hydrophilic head that is repelled by water b. Has hydrophilic tails that are repelled by water c. Has a hydro...

Solved • Aug 2, 2017

Fluid Mosaic Model

Q. The primary structural component of a cell membrane is:  a. A cholesterol molecule b. A protein molecule c. A phospholipid molecule d. An enzym...

Solved • Aug 2, 2017

Fluid Mosaic Model

Q. The molecules that convert extracellular signals into intracellular ones area.  neurotransmittersb.  peptide hormonesc.  cell surface receptorsd.  ...

Solved • Jul 19, 2017

Fluid Mosaic Model

Q. The Fluid Mosaic Model proposed by Singer and Nicolson in 1972 included thata. The cell membrane was composed of lipids and proteins.b. The cell me...

Solved • Jul 18, 2017

Fluid Mosaic Model

Q. Cholesterol functions in the plasma membrane toa. transport ionsb. serve as an energy moleculec. regulate membrane fluidityd. mediate steroid action 

Solved • Jul 18, 2017

Fluid Mosaic Model

Q. The following are all functions of a typical plasma membrane excepta. transport of water and bulk materialb. selective transport of certain molecul...

Solved • Jul 18, 2017

Fluid Mosaic Model

Q. On the outer surface of the plasma membrane there are marker molecules that identify the cell-type. Often these molecules area. ATPb. amino acidsc....

Solved • Jul 18, 2017

Fluid Mosaic Model

Q. The fluid nature of the membranes is attributed to a lateral movement ofa. protein channelsb. phospholipid moleculesc. antigen moleculesd. pumps su...

Solved • Jul 18, 2017

Fluid Mosaic Model

Q. Which of the following properties is not true of membrane phospholipids?a.  The hydrophobic tails are oriented towards the interior.b.  The hydroph...

Solved • Jul 18, 2017

Fluid Mosaic Model

Q. Membrane proteins are not very soluble in water, because they possess long stretches of non-polar amino acids thata. are too long to interact with ...

Solved • Jul 18, 2017

Fluid Mosaic Model

Q. The plasma membrane is a thin sheet of lipid embedded with larger moleculesa. called proteinsb. called polymersc. called nucleotidesd. of sodium an...

Solved • Jul 18, 2017

Fluid Mosaic Model

Q. The proteins of the plasma membrane are in large part responsible for the cell's ability to interact with its environment. They act as or are invol...

Solved • Jul 18, 2017

Fluid Mosaic Model

Q. When phospholipid molecules are placed into water, microspheres form spontaneously. These microspheres are called: a. protons b. archaebacteria ...

Solved • Jul 18, 2017