The structure of the lipid bilayer allows for diffusion of only ________________ molecules, without the need for channels or transporters
Answer:the structure of the lipid bilayer allows diffusion of only hydrophobic molecules,without the need for channels or transporters.
The structure of the lipid bilayer allows for diffusion of only ________________ molecules, without the need...
The lipid bilayer is most permeable to phosphate ions water molecules potassium ions small proteins Compared to water, a lipid bilayer freely allows the passage of glucose is impermeable to ions prefers negatively charged molecules is permeable to small proteins Cell membranes have only phosopholipids are formed from liposomes have proteins with different kinds of attachments none of the above
discuss the functions of various lipid molecules. explain how a lipid bilayer forms, the functions that it serves, and the variability in its structure Identify the different types of membrane proteins (integral, peripheral linked and associated) and how they associate with the lipid bilayer. identify the secondary structural features of proteins that allow them to associate with the lipid bilayer TE k Explain why a plot of velocity versus substrate concentration is curved. define reaction orders and their relationship to...
Which of the below molecules would be expected to be membrane permeable and freely pass through a lipid bilayer? Select all that apply Which of the below molecules would be expected to be membrane permeable and freely pass through a lipid bilayer? Select all that apply. O=C=0 Nat NEN K+ * H-C-OH Ο Ι Ι HHHHHH
Which of the following best describes the structure of lipid bilayer? Select the correct answer below. O A double layer of phospholipids with the polar ends facing inwards. O A double layer of phospholipids with the polar ends facing outwards. O A double layer of cholesterol molecules with the polar ends facing inwards O A double layer of cholesterol molecules with the polar ends facing outwards
3. Write the relative permeabilites for these molecules across a plain lipid bilayer (10 pts) Na*, water, urea, Cl, glucose Size of Items: toe < foot< leg < person
Ions, polar molecules, and large molecules cannot readily cross a lipid bilayer and are dependent on transport proteins to cross a membrane. Classify each of the seven images as an example of a uniport, symport, or antiport transport system.
1- The cytoplasmic side of the plasma membrane’s lipid bilayer have high concentrations of (CHOOSE THREE): a. Sphingomyelin b. Phosphatidylethanolamine c. Phosphatidylcholine d. Phosphatidylinositol e. Phosphatidylserine f. Glycolipid 2- Which of the following characteristics DOES NOT keep proteins secured to the plasma membrane? a. Transmembrane domains in the protein b. Glycosylphosphatidylinositol (GPI) anchors c. Fatty acid lipids covalently attached to the protein d. Sugar molecules covalently attached to the protein e. Associations with lipid rafts 3- Which of the following...
21. The fluid in blood vessels and the Interstitial space is referred to as: a. The extracellular fluid compartment b. Plasma c. The Intracellular fluid compartment 22. Why is the resting cell membrane more permeable to K+ than to Na+? a. Because gated K+ channels are always open. b. Because K+ can diffuse through the phospholipid bilayer of the resting cell membrane and Na+ cannot. c. Because the cell membrane contains Leak (ungated) K+ Channels. 23. Lipid soluble molecules, carbon...
6. Lipid-soluble signaling molecules, such as testosterone, cross the plasma membranes of all cells A) by diffusion but affect only target cells because only target cells retain the appropriate DNA segments. B) by diffusion but affect only target cells because only target cells have the intracellular receptors for testosterone. C) through hydrophilic channels of transmembrane proteins but affect only target cells because only target cells retain the appropriate DNA segments. D) through hydrophilic channels of transmembrane proteins but affect only...
Why does ice float on liquid water? The linear structure of the water molecule allows ice molecules to pack together tightly enough to allowice to float Oxygen's low electronegativity leads to the collapse of the crystal structure allowing the molecules to become closer together in water It is a compound without carbon atoms that exists in the liquid state at room temperature and pressure Water molecules in the solid forme d in a crystal matter that has voids between the...