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TLS Online TPP Program

#Question id: 11341

Why can’t triacylglycerols be significant components of lipid bilayers?

#Unit 2. Cellular Organization

  1. Triacylglycerols lack nonpolar head groups, so they do not orient themselves in a bilayer with their acyl chains inward and their glycerol moiety toward the surface.

  2. Triacylglycerols lack polar head groups, so they orient themselves in a bilayer with their acyl chains inward and their glycerol moiety toward the surface.

  3. Triacylglycerols lack polar head groups, so they do not orient themselves in a bilayer with their acyl chains inward and their glycerol moiety toward the surface.

  4. Triacylglycerols lack polar head groups, so they do not orient themselves in a bilayer with their glycerol moiety inward and their acyl chains toward the surface
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TLS Online TPP Program

#Question id: 14994

#Unit 4. Cell Communication and Cell Signaling

The absence of MHC class I, which is expressed by almost all normal cells, but is specifically down-regulated by some tumors and in response to some viral infections, it will undergo apoptosis by
TLS Online TPP Program

#Question id: 14995

#Unit 4. Cell Communication and Cell Signaling

NKT Cells, which share features with both conventional T lymphocytes and NK cells,
Statement-I) Like T-cells, NKT Cells have T-cell receptors (TCRs), and some express CD4.
Statement-II) Like NK cells, NKT Cells have antibody receptors  
Statements-III) they are APCs
Given above statements, which is sharing correct features of NKT cells?
TLS Online TPP Program

#Question id: 14996

#Unit 8. Inheritance Biology

Which of the following most accurately restates Mendel's law of segregation?
TLS Online TPP Program

#Question id: 14997

#Unit 8. Inheritance Biology

You capture several interesting insects from a population in your yard. By inbreeding, you develop true breeding strains that differ only in the shape of their wings - one strain has round wings while the other strain has oval wings. How might you demonstrate that Mendel's principles apply to your insects?
TLS Online TPP Program

#Question id: 14998

#Unit 8. Inheritance Biology

You set up a monohybrid cross between true breeding round winged and true breeding oval winged insects. Your F1 offspring have round wings, and you collect the following numbers of F2: Round wings: 302; Oval wings: 86. Which of the following statements is NOT correct?
TLS Online TPP Program

#Question id: 14999

#Unit 8. Inheritance Biology

I know that black coat color in mice is dominant to albino. Black mice get a higher price at the pet store so I am disappointed when I cross a black mouse with an albino mouse and get 6 albino and 2 black mice in the litter. I expected all black. What mistake did I make?