TLS Online TPP Program

#Question id: 14829


A new drug is developed that inhibits formation of the flagellar filament by impairing production of the protein flagellin. Is this going to be a good drug?

#SCPH06 I Botany
  1. Potentially-it would definitely only impair bacteria, but wouldn't matter for the ones that don't use a flagellum to move around.
  2. Potentially-if it could be shown that it also didn't impair the production of the eukaryotic flagellum.
  3. No-our eukaryotic cells depend on flagella to move around in our body, and this would impair that function.
  4. No-bacterial flagella are produced using microtubules, not the protein flagellin. This drug would be useless in eliminating bacteria.
More Questions
TLS Online TPP Program

#Question id: 2988

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

Use the figure to answer the question below. 

If the cell whose nuclear material is shown in the figure continues toward completion of mitosis, which of the following events would occur next?

TLS Online TPP Program

#Question id: 2988

#SCPH06 I Botany

Use the figure to answer the question below. 

If the cell whose nuclear material is shown in the figure continues toward completion of mitosis, which of the following events would occur next?

TLS Online TPP Program

#Question id: 2989

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

Use the figure to answer the question below.

In the figure, G1 is represented by which numbered part(s) of the cycle?

TLS Online TPP Program

#Question id: 2989

#SCPH06 I Botany

Use the figure to answer the question below.

In the figure, G1 is represented by which numbered part(s) of the cycle?

TLS Online TPP Program

#Question id: 2990

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

Mitotic CDK complexes are maintained in an inactive state through inhibitory phosphorylation of the CDK subunit. Two highly conserved tyrosine and threonine residues in mammalian CDKs are subject to regulated phosphorylation.

Gene

  Mutant phenotypes

A. Wee1

i. the cell does not divide but continues to grow

B. CAK kinase

ii. mitotic cyclins are inactivated

C. cdc25 phosphatase

iii. premature entry into mitosis

The following table enlists genes and phenotypes observed on mutation of these genes but not correctly matched. Which one of the following combinations is correctly matched ?

TLS Online TPP Program

#Question id: 2990

#SCPH06 I Botany

Mitotic CDK complexes are maintained in an inactive state through inhibitory phosphorylation of the CDK subunit. Two highly conserved tyrosine and threonine residues in mammalian CDKs are subject to regulated phosphorylation.

Gene

  Mutant phenotypes

A. Wee1

i. the cell does not divide but continues to grow

B. CAK kinase

ii. mitotic cyclins are inactivated

C. cdc25 phosphatase

iii. premature entry into mitosis

The following table enlists genes and phenotypes observed on mutation of these genes but not correctly matched. Which one of the following combinations is correctly matched ?