Practice Questions

TLS Online TPP Program

#Question id: 623

Which of these statements about enzyme-catalyzed reactions is false?

#SCPH05 I Biotechnology

At saturating levels of substrate, the rate of an enzyme-catalyzed reaction is proportional to the enzyme concentration.
If enough substrate is added, the normal Vmax of a reaction can be attained even in the presence of a competitive inhibitor.
The rate of a reaction decreases steadily with time as substrate is depleted.
The activation energy for the catalyzed reaction is the same as for the uncatalyzed reaction, but the equilibrium constant is more favorable in the enzyme-catalyzed reaction.

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TLS Online TPP Program

#Question id: 19706

#SCPH06 I Botany

In second-degree heart block

TLS Online TPP Program

#Question id: 551

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

Enzymes differ from other catalysts in that only enzymes:

TLS Online TPP Program

#Question id: 18680

#SCPH01 Biochemistry

DNA from Salmonella species, when digested with the restriction enzyme Xba I, gives around 15 fragments ranging from 25 kb to 680 kb This pattern of fragments, or ‘fingerprint’, is unique to that strain. If the same fingerprint is found from bacteria from other infected people, then it can be assumed that they were all infected from a common source. Thus, by comparing their eating habits, food sources, etc. the source of the infection can be traced to a restaurant, food item. The fingerprints are created and analysed by

TLS Online TPP Program

#Question id: 19354

#SCPH06 I Botany

The best selection agents for the non-transformed cells from the transformed one.

1. Inhibit growth

3. Initiate growth

Which of the following is true regarding selection agents?

TLS Online TPP Program

#Question id: 15731

#SCPH01 Biochemistry

Conditions for rooting involves

2. reduced sugar level

3. addition of NAA

Which of the above statements combinations are correct