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