WRITING PREPOSITIONAL PHRASES

One form 1) ...

A. Of

B. From

C. With

D. By

diabetes mellitus is caused by the inability of the pancreas to produce insulin.

Before 2) ...

A. Pancreas

B. Insulin

C. Glucose

D. Hormone

from GM bacteria became available

people with 3) ...

A. These

B. Those

C. This

D. That

this form of diabetes were treated with insulin extracted from the pancreases of pigs or cattle.

A. On

B. At

C. In

D. With

4)... the 1970s, biotechnology companies began to work on

the idea of 5) ...

A. Inserted

B. Inserting

C. Insertion

D. Reinsert

the gene for human insulin into a bacterium

This form 6) ...

A. In

B. With

C. From

D. Of

human insulin became available in 1983.

There were problems in 7) ...

A. Located and isolated

B. Location and isolation

C. Locate and isolate

D. Locating and isolating

the gene coding for human insulin

Instead of 8) ...

A. Cutting of

B. Cutting out

C. Cutting with

D. Cutting by

the gene from the DNA in the relevant chromosome

These cells contain large quantities of mRNA for insulin

9) ...

A. Since

B. Because

C. As

D. Due to

they are its only source in the body.

The mRNA was then incubated 10) ...

A. By

B. To

C. Of

D. With

the enzyme reverse transcriptase