Lecture 5

Name the type of bacteria which uses Co₂ as a sole source of carbon for growth.

• Organotrophs

• chemotrophs

• phototrophs

• Autotrophs

An organism that cannot manufacture its own food but depends on other for food is called

• chemotrophs

• heterotrophs

• autotrophs

• organotrophs

organisms that are capable of growing in cold temperatures, ranging from -15^oC to 10^oC are called?

• Psychrophiles

• obligate anaerobes

• mesophiles

• chemophiles

An organism that does not use oxygen gas, but can survive and grow in its presence is called

• obligate aerobes

• obilage anaerobes

• Aerotolerant anaerobes

• microaerophile

organisms that uses radiant energy (sunlight) as source of energy is called

• phototrophs

• autotrophs

• heterotrophs

• chemotrophs

------ are chemical substances required in large quantities by cells, such as carbon or phosphate

• trace elements

• micronutrients

• electrons

• macronutrients

the classification of microbes by carbon sources are

• autotrophs and heterotrophs

• chemotrophs and phototrophs

• autotrophs and phototrops

• heterotrophs and phototrophs

Microbes requires Oxygen for growth, they use Oxygen as their final electron acceptor in aerobic respiration

• obligate anaerobes

• obligate aerobes

• autotrophs

• chemotrophs

The bacteria require the right level of oxygen for growth, neither too much nor too little, almost 1-10%.

• facultative anaerobes

• Obligate aerobes

• Microaerophiles

• Aerotolerant anaerobes

------ are chemical substances required in small quantities by cells, such as zinc or cobalt

• bacterial nutrition

• macronutrients

• chemotrophs

• micronutrients