Practice Questions

TLS Online TPP Program

#Question id: 563

Both water and glucose share an —OH that can serve as a substrate for a reaction with the terminal phosphate of ATP catalyzed by hexokinase. Glucose, however, is about a million times more reactive as a substrate than water. The best explanation is that:

#SCPH06 I Botany

glucose has more —OH groups per molecule than does water.
the larger glucose binds better to the enzyme; it induces a conformational change in hexokinase that brings active-site amino acids into position for catalysis.
the —OH group of water is attached to an inhibitory H atom, while the glucose —OH group is attached to C.
water and the second substrate, ATP, compete for the active site resulting in a competitive inhibition of the enzyme.

More Questions

TLS Online TPP Program

#Question id: 8950

#SCPH28 | Zoology

You have before you a living organism, which you examine carefully. Which of the following should convince you that the organism is acoelomate?

TLS Online TPP Program

#Question id: 8951

#SCPH28 | Zoology

An animal that swims rapidly in search of prey that it captures using visual senses concentrated at its anterior end is likely to be

TLS Online TPP Program

#Question id: 8952

#SCPH28 | Zoology

The blastopore is a structure that first becomes evident during

TLS Online TPP Program

#Question id: 8953

#SCPH28 | Zoology

The blastopore denotes the presence of an endoderm-lined cavity in the developing embryo, a cavity that is known as the

TLS Online TPP Program

#Question id: 8954

#SCPH28 | Zoology

Which of the following is descriptive of protostomes?

TLS Online TPP Program

#Question id: 8955

#SCPH28 | Zoology

Which of the following characteristics generally applies to protostome development?