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TLS Online TPP Program

#Question id: 2113

Why are lipids and proteins free to move laterally in membranes?

#SCPH06 I Botany

  1. The interior of the membrane is filled with liquid water.

  2. Lipids and proteins repulse each other in the membrane.

  3. Hydrophilic portions of the lipids are in the interior of the membrane.

  4. There are only weak hydrophobic interactions in the interior of the membrane.

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TLS Online TPP Program

#Question id: 365

#I Life Science/ Life Sciences Group – I-V

Water is a polar molecule: the oxygen atom with its unshared electrons carries a partial negative charge (δ−) of ___________, and the hydrogen atoms each carry a partial positive charge (δ+) of __________, where e is the charge of the electron.
TLS Online TPP Program

#Question id: 14363

#SCPH05 I Biotechnology

Enzyme activity was monitored over the last two stages of an enzyme extraction-separation process. 0.4 g protein, from Stage 5, converted 46 mmol substrate in 10 sec, and 0.02 g protein, from Stage 6, converted 49 mmol in 30 sec. Calculate the specific activities in units/g at each of the two steps 
TLS Online TPP Program

#Question id: 10720

#SCPH28 | Zoology

What is the Jaccard index between the two communities?
TLS Online TPP Program

#Question id: 1684

#I Life Science/ Life Sciences Group – I-V

What are the molecules mediating signal transduction following antigen binding to cell surface immunoglobulin on a B-cell called?
TLS Online TPP Program

#Question id: 2275

#I Life Science/ Life Sciences Group – I-V

A gram-negative bacterium is enclosed by