common number of carbons in fatty acid hydrocarbon chains of membrane phospholip
ID: 217400 • Letter: C
Question
common number of carbons in fatty acid hydrocarbon chains of membrane phospholipias is A) 24 8) 19 C) 16 D) 10 E) 7 an internal CT concentration of 50 mM, a membrane potential of 60 mv and of 100 mM. Each of the following is true for CT import into the cell except an external CT concentration A) import is down a concentration gradient 8) import aG is positive C) import is down an electrochemical concentration g D) import requires energy input E) All are true. adient 1s hosps the glucst pl by ncrea into a cell for transport back out of the cell. A) tarse B) increases glucose transport into the cell by increasing its concentration gradient across the plasma by ince centration gradient across the plasma membrane t into the cell by decreasing its concentration gradient across the plasma membana higher level of glucose outside the cell. membranes are 19. The most prominent lipids in animal cel A) hopanoids B) cholesterol c) D)I slycolipids e) unsaturated fatty acids typically ally occurring ally accuanchrdis primarily in the cis confguration Naturpil n the trams configuration, A) are B) contain double bonds pr C) contain double bonds D) are omega-3 fatty acids E) A and BExplanation / Answer
16) correct option is "C"
The fatty acids in phospho- and glycolipids usually contain between 14 and 24, of carbon atoms, with 16- and 18-carbon being the most common in fatty acid hydrocarbon chain of membrane lipid.
17)
18) correct option is "A"
usually, the phosphorylation of glucose is to prevent diffusion out of the cell. in the process of phosphorylation of glucose a charged phosphate group is added glucose, so the glucose 6-phosphate cannot easily pass through the cell membrane.
19) correct option is "C"
phospholipids derived from glycerol are called phosphoglycerides(or glycerophospholipids). a phosphoglyceride consists of a glycerol molecule, two fatty acids, a phosphate and an alcohol. phosphoglycerides are the most numerous phospholipid molecules found in the cell membrane.
20) correct option is " E"
the double bonds in naturally occurring fatty acids are generally in cis as opposed to the trans configuration.the double bonds of polyunsaturated fatty acids are almost never conjugated.
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