Practice Questions

TLS Online TPP Program

#Question id: 319

London dispersion forces are attractive forces that arise due to

#Unit 1. Molecules and their Interaction Relevant to Biology

infinitesimal dipoles generated by the constant random motion of electrons.
permanent dipoles of molecules containing covalent bonds between atoms of very different electronegativities.
the hydrophobic effect.
ion pairing between oppositely charged functional groups.

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TLS Online TPP Program

#Question id: 15303

#Unit 4. Cell Communication and Cell Signaling

Neurofibromatosis, a benign tumor of the sheath cells that surround nerves, is caused by

a. Loss of both alleles of NF1

b. Mutation in RAS GAP-type protein

c. A single mutant NF1 allele

d. Mutation in SRC protein

TLS Online TPP Program

#Question id: 23592

#Unit 13. Methods in Biology

Which of the following list gives the amount of foreign DNA that can be inserted into vectors is not true?

TLS Online TPP Program

#Question id: 1103

#Unit 4. Cell Communication and Cell Signaling

An inhibitor of which of the following enzymes could be used to block the release of calcium from the endoplasmic reticulum?

TLS Online TPP Program

#Question id: 11568

#Unit 7. System Physiology – Animal

In a lactating mammal, the two hormones that promote milk synthesis and milk release, respectively, are ________.

TLS Online TPP Program

#Question id: 9229

#Unit 9. Diversity of Life Forms

Which of the following is a generally accurate statement about the current research regarding forest fragmentation?