NITROGEN METABOLISM QUIZ

Reducing the expression of pectin methylesterase (PME) has resulted in

tomato fruit that last longer before they become rotten

tomato fruit that will not ripen

plants with resistance to bacteria and fungi

tomato juice that has higher viscosity

TRUE ANSWER : ?
YOUR ANSWER : ?

In a __________ protocol, bacteria with engineered abilities to detoxify pollutants are intentionally released in an area.

microcosm establishment

mibridization

bioremediation

rhizosecretion

TRUE ANSWER : ?
YOUR ANSWER : ?

The first transgenic plants expressing engineered foreign genes were tobacco plants produced by the use of

Arabidopsis thaliana

Agrobacterium tumefaciens

Streptomyces hygroscopicus

Bacillus thuringiensis

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the agricultural challenges below cannot be solved with transgenic techniques?

Public preference for organic vegetables

Crops are damaged by frost

Public concern about safety of synthetic pesticides

Crops are killed by a virus

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a characteristic of a transgenic crop?

Bt insect resistance toxin

herbicide resistance

none of these

increased methionine content

TRUE ANSWER : ?
YOUR ANSWER : ?

ACC demainase gene is responsible for

synthesis for ethylene

synthesis of polygalactouranase

both (a) and (b)

degradation of ACC an immediate precursor to ethylene

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following statements is true regarding genomics?

Plant genomics lags behind similar efforts in animals and microorganisms

All of these

Researchers are busy in trying to determine the genome of the potato plant

Researchers can make use of genomic information even if the entire genome of an organism is not known

TRUE ANSWER : ?
YOUR ANSWER : ?

Starch content of potatoes can be increased by using a bacterial gene, known as

polygalactouranase gene

sucrose phosphate synthase gene

None of these

ADP glucose pyrophosphorylase gene

TRUE ANSWER : ?
YOUR ANSWER : ?

Insect resistance in the transgenic plant has been achieved by

All of these

transferring genes for protease inhibitors

transferring genes for other insecticidal secondary metabolities

transferring genes for Bt toxins

TRUE ANSWER : ?
YOUR ANSWER : ?

The controversy regarding the use of Bt corn is that it

both (a) and (b)

is potentially harmful to monarch butterflies

is a potential allergen to humans

can contaminate groundwater

TRUE ANSWER : ?
YOUR ANSWER : ?