1. Name any four human diseases caused by
2. Name any two plant diseases caused by bacteria.
3. Name the types of bacteria based on their
C. Answer the following 4
bacteria.
shapes.
4. What are comma shaped bacteria called?
5. Name the modes of nutrition in bacteria.
6. Do bacteria reproduce sexually or asexually?
7. Name two antibiotics and their sources.
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8. Give one use of antibiotics.
9. What is the function of denitrifying bacteria?
10. Mention any four useful effects of bacteria.
11. Comment on the statement that bacteria are our
friends and foes.
12. What is the difference between serum and
plasma?
13. What is the food spoilage?
14. Why is it harmful to consume spoiled food?
15. What are serums? Write their uses.
16. What is the use of bacteria in curing tea and
tanning of leather?
17. What is denitrification?
18. How are bacteria important in nature?
19. What are bioweapons?
20. Give advantages and disadvantages of
bioweapons in wars.
Answers
Answer:
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Explanation:
1) Small pox, Chicken pox and mumps
2)Bacterial leaf spot/Bacterial spot/Bacterial blight (Pseudomonas syringe - various strains) and Bacterial blight (Pseudomonas syringe pv. pisi)
3)Bacteria are classified into five groups according to their basic shapes: spherical (cocci), rod (bacilli), spiral (spiritual), comma (vibratos) or corkscrew (spirochetes). They can exist as single cells, in pairs, chains or clusters. Bacteria are found in every habitat on Earth: soil, rock, oceans and even arctic snow.
4)Examples include cyanobacteria and Colostrum anisette. Spiral shaped bacteria are called spiritual. Bacteria having a comma-like single curve in their body are Vibrato. Examples include Vibrato vulcanizes and Vibrato cholera. Bacteria are called cocci which are round in shape.
5)1)Autotrphic and Heterotrophs. Some bacteria obtain energy by consuming organicmolecules.
2)Bacteria That Eat Inorganic Compounds. Some autotrophic bacteria, called chemotrophs, obtain their nutrition from inorganic compounds.
3)Bacteria That Consume Organic Compounds.
4)Bacteria That Use Light as Food.
5)Bacteria That Eat Chemicals.
6)So, bacteria can't reproduce sexually, but they can exchange genetic information with each other. Using a pilus, two bacteria make contact with each other and exchange genetic material. This is called conjugation. Some bacteria simply take up DNA which is floating around in their environment.
7)Chloromycetin,Penicillin and Erythromycin
8)Antibiotics are used to treat or prevent some types of bacterial infection. They work by killing bacteria or preventing them from reproducing and spreading. Antibiotics aren't effective against viral infections, such as the common cold, flu, most coughs and sore throats.
9)Denitrifying bacteria, microorganisms whose action results in the conversion of nitrates in soil to free atmospheric nitrogen, thus depleting soil fertility and reducing agricultural productivity.
10)1)Creating products, such as ethanol and enzymes.
2)Making drugs, such as antibiotics and vaccines.
3)Making bio gas, such as methane.
4)Cleaning up oil spills and toxic wastes.
5)Killing plant pests.
6)Transferring normal genes to human cells in gene therapy.
12)Serum and plasma both come from the liquid portion of the blood that remains once the cells are removed, but that's where the similarities end. Serum is the liquid that remains after the blood has clotted. Plasma is the liquid that remains when clotting is prevented with the addition of an anticoagulant.
13)Food spoilage is the process where a food product becomes unsuitable to ingest by the consumer. The cause of such a process is due to many outside factors as a side-effect of the type of product it is, as well as how the product is packaged and stored.
14)Eating expired foods or foods that are past their best-by date can expose your body to harmful bacteria that can cause vomiting, diarrhea, and a fever.
15)Most often, serums are clear, gel-based or liquid, and they tend to be less thick than a moisturizer. They're typically applied before moisturizers to help lock in moisture. “Often, a serum is able to hydrate more effectively than even the heaviest creams.
16)Uses of bacteria in industry: Tea curing: Certain bacteria are used to produce different flavors of tea. Tanning of leather: Tanning of leather is basically brought about by sunlight, but there are a few bacteria which are involved in this process.
17)Denitrification is a microbial facilitated process where nitrate is reduced and ultimately produces molecular nitrogen through a series of intermediate gaseous nitrogen oxide products.
18)Bacteria play important roles in the global ecosystem.
The cycling of nutrients such as carbon, nitrogen, and sulfur is completed by their ceaseless labor. ... These bacteria convert gaseous nitrogen into nitrates or nitrites as part of their metabolism, and the resulting products are released into the environment.
19)Biological warfare —also known as germ warfare—is the use of biological toxins or infectious agents such as bacteria, viruses, insects, and fungi with the intent to kill or incapacitate humans, animals or plants as an act of war. Biological weapons are living organisms or replicating entities.
20)