TLS Online TPP Program

#Question id: 10254


Sucrose is split into its two monosaccharide units—glucose and fructose—which can readily enter the glycolytic pathway. Two pathways for the splitting of sucrose are known in plants, both of which take part in the use of sucrose from phloem unloading; Invertase pathway and sucrose synthase pathway, some statements are given about these pathways, which of the following is incorrect?

#Unit 6. System Physiology – Plant
  1. Invertases hydrolyze sucrose in the cell wall, vacuole, or cytosol into its two component hexoses glucose and fructose
  2. sucrose synthase combines sucrose with UDP to produce fructose and UDP-glucose in the cytosol
  3. UDP-glucose pyrophosphorylase then converts UDP-glucose and pyrophosphate (PPi ) into UTP and glucose 6-phosphate
  4. The sucrose synthase reaction is close to equilibrium, the invertase reaction is essentially reversible, driving the flux in the forward direction
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TLS Online TPP Program

#Question id: 4977

#Unit 11. Evolution and Behavior

There are at least a dozen known species in the extinct genus Lystrosaurus. If each species was suited to a quite different environment, then this relatively large number of species is likely due to

TLS Online TPP Program

#Question id: 4978

#Unit 11. Evolution and Behavior

The dicynodonts survived the mass extinction that was most closely correlated in time, if not in cause, with

TLS Online TPP Program

#Question id: 4979

#Unit 11. Evolution and Behavior

The dicynodonts that survived the Permian extinction would initially have had to endure (or escape from) the physical effects of __________, and subsequently, the biological effects of __________.

TLS Online TPP Program

#Question id: 4980

#Unit 11. Evolution and Behavior

If an increase in dicynodont species diversity (i.e., number of species) occurred soon after the Permian extinction, and if it occurred for the same general reason usually given for the increase in mammalian diversity following the Cretaceous extinction, then it should be attributed to

TLS Online TPP Program

#Question id: 4981

#Unit 11. Evolution and Behavior

An organism has a relatively large number of Hox genes in its genome. Which of the following is not true of this organism?

TLS Online TPP Program

#Question id: 4982

#Unit 11. Evolution and Behavior

Bagworm moth caterpillars feed on evergreens and carry a silken case or bag around with them in which they eventually pupate. Adult female bagworm moths are larval in appearance; they lack the wings and other structures of the adult male and instead retain the appearance of a caterpillar even though they are sexually mature and can lay eggs within the bag. This is a good example of