Nutrition of Bacteria

Q. Photosynthetic bacteria differ from green plants in

1. Nature of their pigments
2. Type of electron donors
3. All of the above
4. Photosynthetic process being non-oxygenic

Q.

The interior of a cow-dung pile kept for a few days is quite warm. This is mostly because

1. bacterial metabolism inside the dung releases heat

2. undigested material released heat due to oxidation by air

3. dung is dark and absorbs a lot of heat

4. cellulose present in cow dung is a good insulator

Q. Which of the following is an autotrophic bacterium?

1. Rhizobium
2. Azotobacter
3. Nitrobacter
4. Clostridium

Q. Which bacteria oxidise various inorganic substances and use the released energy for their ATP production and they play a great role in recycling of nutrients like nitrogen, phosphorus, iron and sulphur ?

1. Archaebacteria
2. Photosynthetic autotroph bacteria
3. Chemosynthetic autotroph bacteria
4. Heterotrophic bacteria

Q. In photosynthetic bacteria, the pigments occur in

1. Chloroplasts
2. Chromatophores
3. Chromatoplasts
4. Leucoplasts

Q. _________ bacteria oxidise various inorganic substances such as nitrates, nitrites and ammonia and use the released energy for ATP production. They play an important role in recycling of nutrients (N, P, Fe, S etc.).

1. Photosynthetic autotrophic
2. Chemosynthetic autotrophic
3. Saprophytic
4. Parasitic

Q. All life on earth derive its energy directly or indirectly from sun except

1. Mushroom and mould
2. Chemosynthetic bacteria
3. Symbiotic bacteria
4. Pathogenic bacteria

Q. What do you call bacteria that use organic molecules both for energy and carbon source?

1. Photoautotrophs
2. Photoheterotrophs
3. Chemoautotrophs
4. Chemoheterotrophs

Q. State whether the following statements are true or false.
All bacteria are heterotrophs.

1. True
2. False

Q. Some bacteria require sunlight to grow because

1. They want heat
2. They do not like darkness
3. They are capable of manufacturing their own food by photosynthesis like plants
4. They cannot produce food with light

Q. Photoautotrophic bacteria have

1. Chloroplast
2. Chromatophore
3. Grana
4. Carotene

Q. List the kinds of nutrition in bacteria.

Q. An example of chemoautotrophic bacterium is

1. Lactobacillus
2. Escherichia coli
3. Nitrosomonas
4. Rhizobium

Q. What are the nutritional groups of bacteria based on their source of energy and carbon?

Q. Are chemosynthetic bacteria-autotrophic or heterotrophic?

Q. Bacterial photosynthesis is characterised by

1. Evolution of $O_2$
2. Evolution of $H_2$
3. Evolution of $C{O}_2$
4. Non-evolution of $O_2$

Q. Select odd one(w.r.t. heterotrophic bacteria)

1. Saprophytic bacteria
2. Chemosynthetic bacteria
3. Parasitic bacteria
4. Symbiotic bacteria

Q. Choose the correct answers from the alternatives given.
Bacteria that must have organic molecule both for energy and as a source of carbon are called

1. chemoheterotrophs
2. chemoautotrophs
3. photoheterotrophs
4. photoautotrophs

Q. Choose the correct answers from the alternatives given.
Chemosynthetic bacteria:

1. oxidise inorganic compounds to acquire energy
2. are autotrophic
3. use the sun rays to acquire energy
4. both (a ) and (b)

Q. Which one of the following does not perform photosynthesis by breakdown of water?

1. Purple bacteria
2. Cyanobacteria
3. Higher plants
4. None of the above

Q. How do bacteria obtain their nourishment?

Q. Chemosynthetic bacteria are important producers of

1. Areas around hydrothermal vents
2. Ocean bed
3. Lake bed
4. Deltas