Epinephrine can be what kind of signaling molecule?

a. autocrine      b. direct contact  c. endocrine d. paracrine

TLS Online TPP Program

#Question id: 14734

#Section 2: General Biology

Among the following which bacteria shows corkscrew movement?

1. Treponema pallidum

2. Leptospira

3. Borrelia burgdorferi

4. Brachyspira pilosicoli

Which among the following combination is correct?

TLS Online TPP Program

#Question id: 14735

#Section 2: General Biology

Large surface are a to volume ratio of bacterial cell give advantage for

TLS Online TPP Program

#Question id: 14736

#Section 2: General Biology

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

#Section 2: General Biology

Which structures are involved in formation of biofilms

TLS Online TPP Program

#Question id: 14741

#Section 5: Bioprocess Engineering and Process 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

#Section 5: Bioprocess Engineering and Process 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?