In research on aging (both cellular aging and organismal aging), it has been found that aged cells do not progress through the cell cycle as they had previously. Which of the following, if found in cells or organisms as they age, would provide evidence that this is related to cell signalling?

TLS Online TPP Program

#Question id: 14736

#SCPH05 I Biotechnology

In basal structure of flagella of gram positive bacteria?

1. L

2. P

3. S

4. M

Which combination is not found in above bacteria? Choose the option with both incorrect rings.

TLS Online TPP Program

#Question id: 14736

#SCPH06 I Botany

In basal structure of flagella of gram positive bacteria?

1. L

2. P

3. S

4. M

Which combination is not found in above bacteria? Choose the option with both incorrect rings.

TLS Online TPP Program

#Question id: 14737

#SCPH05 I Biotechnology

Which structures are involved in formation of biofilms

TLS Online TPP Program

#Question id: 14737

#SCPH06 I Botany

Which structures are involved in formation of biofilms

TLS Online TPP Program

#Question id: 14741

#SCPH05 I Biotechnology

Microbial cell recovery is carried out in a continuous disc-stack centrifuge. The centrifuge is operated at 5000 rpm for separation of baker's yeast. At a feed rate of 60 1/min, 50% of the cells are recovered. At constant speed, solid recovery is inversely proportional to flow rate. What operating speed is required to recover 90% of cells if the flow rate in the centrifuge is maintained at 601/min? 

TLS Online TPP Program

#Question id: 14742

#SCPH05 I Biotechnology

Gel chromatography is used for hormone separation. A pilot-plant scale gel chromatography column packed with sephacryl resin is used to separate two hormones, A and B. The column is 5 cm in diameter and 30 cm in height: V, = 1.9x 10-⁴m³, Wr = 3x10^-3m³ /kg dry sephacryl, ps =1.25 x 10³ kg/m³ . The partition coefficients are k_pA =0.38 and k_pB= 0.15. If the eluting flow rate is 0.7 I/h, what is the retention time for each hormone?