1 Which of the following receptors becomes phosphorylated when it is bound by its signaling molecule ligand?

 A.Receptor kinases

B..Ion channel receptors

C.Steroid receptors

D.G protein-coupled receptors

 

2.Which one of the following types of fatty acids would be likely to have the LOWEST melting temperature?

A. short tails and low saturation

B. short tails and high saturation

C. long tails and low saturation

D. long tails and high saturation

E. All fatty acids have the same melting temperature, regardless of tail length or level of saturation.

 

3.Chronic myelogenous leukemia (CML) is caused when a segment of chromosome 9 and a segment of chromosome 22 both break off and switch places. How is this mutation classified?

A. transposition

B.reciprocal translocatioN

C.inversion

D.deletion

E..duplication

 

4. Given equal probabilities of the birth of a boy or girl, what is the probability that a group of four siblings includes all boys? All girls? All boys or all girls?

A. 1/16; 1/16; 1/8

B.1/8; 1/16; 3/8

C.1/16; 1/16; 1/64

D.1/16; 1/8; 3/8

 

5.Peptide bonds form between the amino acids stabilize the __________ structure of a protein.

A. tertiary 

B.secondary 

C.quaternary

D.primary 

 

6.In order for a tumor cell to metastasize, which of the following would you expect to happen?

 A.a decrease in both cadherin and integrin expression

B.an increase in both cadherin and integrin expression

C.an increase of cadherin expression and a decrease in integrin expression

D.a decrease in cadherin expression and an increase of integrin expression

 

7. In <i>Drosophila</i>, absence of Bicoid protein results in larvae missing anterior segments and absence of Nanos protein results in larvae missing posterior segments. Suppose you inject Bicoid protein into the posterior region of early embryos lacking Nanos. The expected result would be: 

A..larvae like <i>nanos</i> mutants.

B.larvae like <i>bicoid</i> mutants.

C.larvae with two posterior regions.

D.larvae with two anterior regions.

E.None of the answer options is correct.

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Status NEW Posted 03 Jul 2017 06:07 AM My Price 10.00

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