Practice Questions

TLS Online TPP Program

#Question id: 1241

Which of the following is a common step in the opening/closing of ion channels by acetylcholine and rhodopsin binding to their receptors?

#Unit 4. Cell Communication and Cell Signaling

The Gα·GTP subunit dissociates from the Gβγ complex.
The released Gα ·GTP subunit interacts with the ion channel.
The released Gβγ complex interacts with the ion channel.
The released Gα ·GTP subunit activates cGMP phosphodiesterase.

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TLS Online TPP Program

#Question id: 15406

#Unit 8. Inheritance Biology

Which method of gene transfer involves direct contact between the bacteria?

TLS Online TPP Program

#Question id: 15407

#Unit 8. Inheritance Biology

The end result of F factor mediated conjugation:

TLS Online TPP Program

#Question id: 15408

#Unit 8. Inheritance Biology

Which of the following is not a protein or group of proteins required for conjugation to occur?

TLS Online TPP Program

#Question id: 15409

#Unit 8. Inheritance Biology

A heterozygous trihybrid corn plant is testcrossed and the following progeny are produced (all traits are recessive to their wildtype alternative);

booster, silkless 137

booster, liguleless, silkless 291

liguleless, silkless 3

booster, liguleless 34

What is the order of the loci on the chromosome?

TLS Online TPP Program

#Question id: 15410

#Unit 8. Inheritance Biology

A pattern of transmission where all offspring have the same phenotype as their mother is consistent with which type of non-Mendelian inheritance?

TLS Online TPP Program

#Question id: 15411

#Unit 8. Inheritance Biology

Both X-linked genes and extranuclear inheritance produce different results in reciprocal crosses. How can you distinguish between them?