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Student Name: ______________________
Teacher:
______________________
District:
Robeson
Assessment:
9_12 Agriculture AU71 - Biotech and Agrisci Rsch I Test 3
Description:
Unit E - Microbiology
Form:
501
Date: ___________
1. While both bacteria and viruses can cause illness, illnesses caused by viruses have proven to be in MOST cases:
A.
B.
C.
D.
Easy to cure.
Extremely rare.
Much less harmful.
Much more difficult to cure.
2. What is a characteristic of viruses?
A.
B.
C.
D.
Able to live without a host
Able to reproduce sexually
Contain genetic information
Will not survive harsh environments for long periods of time
3. Prokaryotic cells are different from viruses in that prokaryotic cells:
A.
B.
C.
D.
Are composed primarily of genetic material surrounded by a tough protein coat.
Are formed by a group of single celled organisms with no distinct nucleus.
Are surrounded by a tough protein coat that makes them tougher than viruses.
Need a host in order to thrive and reproduce.
4. What disease causing organisms have a tough protein coating that surrounds DNA making the treatment of the
disease they cause very difficult?
A.
B.
C.
D.
Animal cells
Eukaryotic cells
Prokaryotic cells
Viruses
5. When viruses are used in genetic engineering to transport beneficial genes removed from one organism into
another organism, they are known as:
A.
B.
C.
D.
Antibodies
Bacterium
Pathogens
Vectors
6. The group of living organisms including all bacteria as well as several complex single-celled organisms are:
A.
B.
C.
D.
Cyanobacteria.
Eukaryotic cells.
Prokaryotic cells.
Viruses.
7. Which form of bacteria is considered MOST beneficial for production agriculture?
A.
B.
C.
D.
Clostridium boutlinum
Eescherichia coli
Nitrobactus alkalicus
Salmonella enteriditus
8. What bacteria aid plants by taking nitrogen from the air and converting it into a form that can be absorbed by
roots?
A.
B.
C.
D.
Ammonia consuming
Ammonia fixing
Nitrogen consuming
Nitrogen fixing
9. What is the process where strands of genetically engineered bacteria are used to consume chemicals and other
toxins in soil and water in order to clean oil spills from waterways and other areas?
A.
B.
C.
D.
Bioinfiltration
Bioremediation
Cloning
Succession
10. The LEAST likely use for genetically modified bacteria in agriculture is:
A.
B.
C.
D.
Disposal of waste from livestock production facilities.
Protecting plants from the negative effects of other microorganisms.
The efficiency of bio-diesel fuels.
The insertion of genes into genetically modified organisms.
11. A bacterium that consumes cholesterol in humans, thus helping to decrease the risk of heart disease, is inserted
into specially produced yogurts in the process of:
A.
B.
C.
D.
Biogenesis.
Bioremediation.
Genetic engineering.
Pharming.
12. What bacteria that often causes galls in plants is used effectively to transmit beneficial gene sequences into
plants?
A.
B.
C.
D.
A. tumefaciens
E. coli
L. parsonii
L. reuteri
13. The process of pasteurization is different from sterilization in that:
A.
B.
C.
D.
Pasteurization kills all bacteria present in a food product.
Pasteurization specifically targets harmful bacteria and leaves some beneficial organisms alive.
Sterilization kills most beneficial bacteria present in a food product.
Sterilization specifically targets harmful bacteria and leaves some beneficial organisms alive.
14. If a new species in the genus Lactobaccillus expresses probiotic tendencies, it MOST likely means it is a:
A.
B.
C.
D.
Dangerous new form of bacteria.
Dangerous new form of virus.
Helpful new form of bacteria
Helpful new form of antivirus.
15. Increasing use of biocontrols in managing pathogens in agricultural production is a result of the:
A.
B.
C.
D.
Affordability of research and development of biocontrols.
Health and environmental risks posed by traditional control methods.
Ineffectiveness of biocontrols compared to traditional control methods.
Ready availability of biocontrols compared to traditional control methods.
16. Plant cells are different from animal cells in that only plant cells contain BOTH:
A.
B.
C.
D.
A cell wall and chloroplasts.
A cell wall and ribosomes.
Chloroplasts and mitochondria.
Vacuoles and chloroplasts.
17. Haploid eukaryotic cells combine in the process of sexual reproduction to produce stem cells, that divide rapidly:
A.
B.
C.
D.
Developing into the sex cells for the new organism.
Differentiating into all other cells found in the body.
Differentiating into all other diploid cells in the body.
Differentiating into all other haploid cells in the body.
18. A characteristic that is true of all eukaryotic cells is the:
A.
B.
C.
D.
Absence of membrane bound organelles.
Location of genetic material inside a distinct nucleus.
Loosely organized genetic material.
Presence of a cell wall.
19. Mitochondria perform what function in eukaryotic cells?
A.
B.
C.
D.
Conversion of simple sugars into forms useful for cellular functions
Conversion of light energy to chemical energy
Conversion of physical energy into forms useful for cellular functions
Transportation of converted energy throughout the cell
20. The cell membrane is NOT responsible for:
A.
B.
C.
D.
Protecting cellular organelles from damage.
Providing energy for cellular transport.
Providing support and structure for the cell.
Monitoring the flow of materials into and out of the cell.
21. Gametes are specialized eukaryotic cells used to transmit genetic information through sexual reproduction that
contain:
A.
B.
C.
D.
½ the normal number of chromosomes.
¼ the normal number of chromosomes.
2 times the normal number of chromosomes.
The same number of chromosomes as diploid cells.
22. Haley found that many bacteria prefer a warm slightly humid environment. She was surprised to learn that
species of bacteria have been found in:
A.
B.
C.
D.
Almost every environment on earth.
Any aerobic environment.
Any nitrogen free environment.
Every environment with available light.
23. Caitlin is preparing bacteria culture plates to test for the presence of E. Coli on the counters in a food
preparation area. What instrument is MOST effectively used to transfer samples to plates?
A.
B.
C.
D.
Inoculating loop
Eye dropper
Scalpel
Small forceps
24. Amir is working with bacteria cultures. He ALWAYS wears and immediately after use disposes of:
A.
B.
C.
D.
Short sleeves.
Face shields.
Lab masks.
Latex gloves.
25. Harry is identifying different varieties of bacteria growths on culture plates through the use of a technique called
Gram:
A.
B.
C.
D.
Shading.
Staining.
Straining.
Streaking.
26. Josh is preparing to test plant pots for the presence of harmful bacteria. To do so, he heats a clear solution in a
water bath, pours the solution into petri dishes, and immediately seals each dish. What is he doing?
A.
B.
C.
D.
Destroying all remaining biologicals.
Examining strands of bacteria present.
Inoculating bacteria with viruses.
Preparing agar plates.
27. Travis slowly moves a cotton swab or inoculating loop back and forth across a tilted agar media to BEST:
A.
B.
C.
D.
Introduce bacteria to a culture plate.
Remove bacteria samples from a culture plate.
Sample bacteria from a liquid.
Sample bacteria from a solid surface.
28. Trey uses a biohazard bag or autoclavable pouch to contain loose materials and waste from a:
A.
B.
C.
D.
Biological lab during culturing.
Biological lab during sterilization.
Chemical lab during culturing.
Chemical lab during sterilization.
29. After sterilization, Meredith avoids dumping excess agar media down the drain as it:
A.
B.
C.
D.
Can quickly solidify and clog drains.
Can melt the plumbing lines.
Is extremely harmful to water quality.
Is useful in plant compost.
30. When sterilizing for MOST bacteria used in biological laboratories, Hardy places the autoclave on:
A.
B.
C.
D.
121° C and 15 psi for 15 minutes.
121° C and 30 psi for 30 minutes.
212° F and 15 psi for 15 minutes.
212° F and 30 psi for 15 minutes.