GMAT Test Practice Questions

Hey , while doing preparation for GMAT test I requires GMAT Test Practice paper . will you please give here sample GMAT Test Question paper?

[Shaleen]

As you want I am here giving you sample GMAT Test Question paper.

Reading Comprehension

"Urodeles," a class of vertebrates that includes newts and salamanders, have the enviable ability to regenerate arms, legs, tails, heart muscle, jaws, spinal cords, and other organs. "Planaria," simple worms, can be sliced and diced in hundreds of pieces, with each piece giving rise to a completely new animal. However, while both "urodeles" and "planaria" have the capacity to regenerate, they use different means to accomplish this feat.

In effect, a "urodeles" specimen turns back the biological clock. First, the animal heals the wound at the site of the missing limb. Then various specialized cells at the site, such as bone, skin, and blood cells, lose their identity and revert to cells as unspecialized as those in the embryonic limb bud. This process is called dedifferentiation, and the resulting blastema, a mass of unspecialized cells, proliferates rapidly to form a limb bud. Ultimately, when the new limb takes shape, the cells take on the specialized roles they had previously cast off.

In contrast, "planaria" regenerate using cells called neoblasts. Scattered within the planarian body, these neoblasts remain in an unspecialized, stem-cell state, which enables them at need to differentiate into any cell type. Whenever "planari"a are cut, the neoblasts migrate to the site and form a blastema by themselves. It is interesting to note that this mechanism is similar to that following reproductive fission in these animals, and that species incapable of this form of asexual reproduction have poorly developed regenerative capacities.

1. The primary purpose of the passage is to:
A describe the roles of blastemas in regenerating "urodeles" and
"planaria."
B describe how "urodeles" use the process of dedifferentiation to
regenerate.
C contrast the mechanisms by which "urodeles" and "planaria" accomplish
regeneration.
D show how methods of cellular regeneration have evolved in different
animal species.
E explain the link between reproductive fission and regeneration in simple
worms.

2. All of the following are true of dedifferentiation in regenerating "urodeles" EXCEPT:
A the cells recover their specialized roles after the limb bud takes shape.
B it involves a regression by cells to an earlier stage of development.
C specialized cells migrate to the site of the blastema and proliferate
rapidly.
D the healing of the wound at the site of the injury is the first step of the
process.
E dedifferentiation is characterized by a loss, and then recovery, of cellular
identity.

Sentence Corrections

1. In the years after he left the White House, Richard Nixon strove to burnish his image for history more assiduously than did any former president.
A more assiduously than did any former president.
B more assiduously than any other former president.
C with an assiduousness unmatched by any former president.
D with more assiduousness than did any other former president.
E more assiduously in comparison to any former president.