Test 4

Question 0

During the phytoremediation experiment l, Emmanuel is having little success removing large quantities of contaminants from soil, despite flourishing vegetative growth from testing plants. A likely explanation for this lack of removal is that Emmanuel used plants with:

Answer 0

Weak, shallow roots system

Question 1

The presence of fuzzy colored spots on the surface of fruits, bread, other foods is an indication of the growth of a:

Answer 1

Fungus

Question 2

While planning a bioremediation experiment, Keith hopes to fine the conditions best suites for a species of bacteria to remove contaminants from soil. The variable he should attempt to alter in each soil sample are:

Answer 2

Moisture content, temperature, oh

Question 3

A scientifically valid control group for a soil bioremediation experiment testing the effect of various plants in removing contaminants, should differ from the experimental groups only in the:

Answer 3

Presence of no plants in the sample

Question 4

Cal is conducting a bioremediation experiment testing the effectiveness of various bacteria at removing fertilizer waste from water samples. Cal should Tessy impact the bacteria in each sample by:

Answer 4

Regularly test the water using immunoassay test

Question 5

Aerobic bacteria are often used in Bioremediation experiments attempting to remove contaminants from water sources, however these bacteria are often require the use of an air pump to

Answer 5

Oxygenate the sample water

Question 6

Balloons are often used in bioremediation experiments to

Answer 6

Capture gases produced by bacteria During fermentation processes

Question 7

Agricultural production techniques utilizing transgenic crops with insect resistance have improved the biodiversity of insect populations and surrounding areas by

Answer 7

Preventing the death of nontarget insects

Question 8

An example of sustainability is the use of genetically altered bacteria to produce medicines and medical substances as a bacteria

Answer 8

Quickly reproduce creating a plentiful supply unlike natural plant and animal sources

Question 9

The use of cloned animals to increase the number of organisms in endangered population is seen as dangerous by many scientists who think practice will

Answer 9

Disrupt game fly through natural reproduction in the population

Question 10

The production of an Asian Guar named Noah in 2000 was significant as it was the first successful

Answer 10

Clone to be born from a surrogate mother of another species

Question 11

According to recent studies the use of BT crops and other transgenic plants in the United States has help farmers to decrease

Answer 11

Pesticide use by more than 46 million pounds

Question 12

Agriscience researchers attempting to develop alternatives for fossil fuels, please biodiesel andethanol using

Answer 12

Organic agricultural products and byproducts

Question 13

A biotechnology technique most used to clean superfund sites and other contaminated areas is

Answer 13

Bioremediation

Question 14

When the first important commercial applications of modern bioremediation techniques was the use of bacteria to

Answer 14

Consume create all released in the ocean from tanker spills

Question 15

BSM immunoassay test is an important method for the

Answer 15

Detection of a large number of contaminants at very low levels

Question 16

The placement of a cheap, expendable fish highly suseptible to change in pH and fish tank full of expensive eels is an example of the use of

Answer 16

Indicator species

Question 17

Scientists have recently inserted genes from bacteria and animals into cottonwood trees, allowing the trees to convert heavy metals to useful forms. This makes transgenic cottonwoods a good candidate for use in

Answer 17

Phytoremediation

Question 18

The use of genetically altered transgenic organisms as Biological controls for insect and plant pests has increased as researchers have been able to use more

Answer 18

Predatory and parasitic organisms

Question 19

Recent attempts to create new efficient biofuels have produced a diesel fuel that

Answer 19

Those more expensive than regular diesel, is sustainable and quickly biodegrades

Question 20

The use of biosensors and agriscience allow agriculturalist to monitor minor changes and ecosystem by using a transducer to measure

Answer 20

The responding changes in the specific population of organisms

Question 21

Salmonella is the most common bacteria often transmitted to humans from

Answer 21

Raw eggs

Question 22

Jimmy is conducting spearmint gum safety of pickled foods by testing the bacteria levels in jars for six months. The variable most likely to that bacteria levels is the

Answer 22

PH level

Question 23

Jen discovers that the lid of the canning jar is popped out prior to opening the jar. The canned materials are most likely

Answer 23

Contaminated by a potentially deadly toxins

Question 24

Holly tested several cracked eggs for the presence of salmonella. If she places samples testing positive in the freezer for one week then she removes the sample she should expect to find

Answer 24

Nearly the same levels of salmonella before

Question 25

Mohammed uses irradiation in his restaurant in order to

Answer 25

Quickly sterilize feet without having a noticeable effect on it’s taste

Question 26

Ishmael removes the water in meat that he wishes to preserve by dehydration and salting. Both methods are effective because

Answer 26

Bacteria cannot live and function

Question 27

Hector is testing on bacteria growth rates in cottage cheese. In order to preserve the samples without changing the bacterial populations, he stores the samples by

Answer 27

Freezing the cottage cheese slightly below 0°C

Question 28

An example of recent attempts of scientists to remove the genes responsible for the production of negative substances in foods is the attempt to remove

Answer 28

Caffeine from coffee beans

Question 29

Decreases in the time required for bread to rise or beer to Ferment can most likely be achieved through the creation of

Answer 29

Transgenic yeast

Question 30

The risk that inserted genes may contain common allergies is a major concern regarding the

Answer 30

Consumption of genetically modified foods

Question 31

Isolating genes responsible for the production of vitamins and other substances and inserting them into various production crops, agricultural researchers were able to produce food products

Answer 31

With increased nutritional value

Question 32

The insertion of genetic resistance for various insect pests has increase the safety of food by decreasing the

Answer 32

Amount of pesticide residue on plants

Question 33

The removal of genes responsible for the production of ethylene in Apple and other fruits has enabled agriculturalists to

Answer 33

Increase the time person in which fruits maybe stored

Question 34

Besides controlling insect damage in the field the insertion of BT genes into crops has also reduced post harvest damage by reducing the damage areas that often provide a perfect habitat for

Answer 34

Fungal diseases

Question 35

Golden rice and other recent crop developments represent the efforts of researchers please transgenic organisms to combat malnutrition by creating organisms that

Answer 35

produce high levels of vitamins

Question 36

Until the recent insertion of a gene into bacteria coding for the production of the enzyme rennin, what product was made exclusively from enzymes are made from the stomachs of cattle

Answer 36

Cheese

Question 37

Yogurt often has little impact on lactose intolerant individuals because

Answer 37

Much of the lactose in yogurt is converted to sugar about enzymes

Question 38

During the process of alcoholic fermentation yeast produces

Answer 38

CO2 and ethanol

Question 39

Water temperature must be carefully tested before placing yeast in the mixture, as extremely hot water can

Answer 39

Kill the yeast

Question 40

If Jason studies is an zymology he is most likely to study the function and process of

Answer 40

Fermentation

Question 41

During the fermentation process yeast consume what compound

Answer 41

Sugar

Question 42

To destroy harmful bacteria, meat should be prepared at

Answer 42

74°C in an oven for 20 seconds

Question 43

The presence of what organism in food is a common cause of food poisoning humans

Answer 43

campylobacter

Question 44

The temperature at which most harmful microorganisms present in food are most active is

Answer 44

44°C to 80°C

Question 45

Most ever from bacteria in that most molds affecting foods are transferred from

Answer 45

Exposure to air