TLS Online TPP Program

#Question id: 18645


SDS PAGE separate molecules by size because the presence of SDS (sodium dodecyl sulphate) denatures the protein removing 2˚, 3˚ and 4˚ structures (they assume a linear chain) and the SDS coats the molecules giving them a uniform charge/mass ratio. In an experiment (SDS-PAGE) with a discontinuous buffer system following band pattern is obtained 

   
Choose the correct statement regarding this band pattern

#SCPH01 Biochemistry
  1. Lysozyme shows least mobility
  2. Unknown protein shows highest mobility
  3. myosin has highest molecular mass
  4. myosin has lowest molecular mass
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TLS Online TPP Program

#Question id: 2979

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

Use the data in the accompanying table to answer the question. Minutes Spent in Cell Cycle Phases-

Cell type

G1

S

G2

M

Beta

18

24

12

16

Delta

100

1

0

0

Gamma

18

48

14

20

The data in the table were obtained from a study of the length of time spent in each phase of the cell cycle by cells of three eukaryotic organisms designated beta, delta, and gamma. What is the best explanation for the data associated with delta cells?

TLS Online TPP Program

#Question id: 2979

#SCPH06 I Botany

Use the data in the accompanying table to answer the question. Minutes Spent in Cell Cycle Phases-

Cell type

G1

S

G2

M

Beta

18

24

12

16

Delta

100

1

0

0

Gamma

18

48

14

20

The data in the table were obtained from a study of the length of time spent in each phase of the cell cycle by cells of three eukaryotic organisms designated beta, delta, and gamma. What is the best explanation for the data associated with delta cells?

TLS Online TPP Program

#Question id: 2980

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

Following statements are regarding to the protein phosphatase Cdc14 function in budding yeast.

A. In budding yeast, the protein phosphatase Cdc14 throws the switch between two mutually antagonistic states during anaphase.

B. Cdc14 is kept inactive during most of the cell cycle, but is activated during anaphase by a GTPase signaling pathway known as the mitotic exit network.

C. Mitotic exit network is unresponsive to spindle position and becomes active in anaphase.

D. Cdc14 phosphatase activated by the activation of protein kinase cascade.

E. Cdc14 dephosphorylates APC/CCdh1 and Sic1 to promote mitotic cyclin degradation

and mitotic CDK inactivation, respectively. This process leads to exit from mitosis.

Which of the following combination is incorrect?

TLS Online TPP Program

#Question id: 2980

#SCPH06 I Botany

Following statements are regarding to the protein phosphatase Cdc14 function in budding yeast.

A. In budding yeast, the protein phosphatase Cdc14 throws the switch between two mutually antagonistic states during anaphase.

B. Cdc14 is kept inactive during most of the cell cycle, but is activated during anaphase by a GTPase signaling pathway known as the mitotic exit network.

C. Mitotic exit network is unresponsive to spindle position and becomes active in anaphase.

D. Cdc14 phosphatase activated by the activation of protein kinase cascade.

E. Cdc14 dephosphorylates APC/CCdh1 and Sic1 to promote mitotic cyclin degradation

and mitotic CDK inactivation, respectively. This process leads to exit from mitosis.

Which of the following combination is incorrect?

TLS Online TPP Program

#Question id: 2981

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

For the nuclear envelope to be broken down as cells go from prophase to prometaphase during mitosis, the nuclear lamina has to be disassembled. Which of the following statement is incorrect?

TLS Online TPP Program

#Question id: 2981

#SCPH06 I Botany

For the nuclear envelope to be broken down as cells go from prophase to prometaphase during mitosis, the nuclear lamina has to be disassembled. Which of the following statement is incorrect?