MCQs Mock Test for Lab Technicians and Technologists: Chapter 65

If the source of energy for bacteria is from chemical compounds they are said to be

Log-phase is also known as

Which one of the following tissues can metabolize glucose, fatty acids and ketone bodies for ATP production?

The most active stage in the sigmoid curve of bacteria in which maximum growth is attained

The compound that is added to the medium to absorb oxygen for the creation of anaerobic conditions

For the formation of cell-components the elements required are

Physiologically the cells are active and are synthesizing new protoplasm in which stage of the growth in bacteria

In bacteria, the increase in population is in the manner

Vitamin function as

Rapid bacterial growth phase is known as

In gram positive and gram negative bacteria the electron transport contains

Growth in a closed system, affected by nutrient limitation and waste product accumulation is called

Optimum growth temperature is greater that 45oC is

Nitrites are oxidized to nitrates by a microorganism

Sulphur can be utilized by bacteria in the form of

Clostridium welchii spore formation can be induced only on specified media such as

An example of competitive inhibition of an enzyme is the inhibition of

Mycotoxins are formed during the end of

The no. of generations per hour in a bacteria is

The major constituents in agar are

The ion that is required in trace amounts for the growth of bacteria is

Which one of the following mineral elements play an important role in biological nitrogen fixation

The bacteria which are able to grow at 0°C but which grow at 20°C to 30°C, are known as

the first phase of a growth curve is

How much time a bacterium take for the complete duplication?

In the synthesis of cell components the major element required is

Minimum growth temperature is

Vitamin K is necessary for the species

The reproduction rate is equal to death rate in which stage

The principle in microbiological assays is

The generation time is

The most common mode of cell division in bacteria is

Bacteria which need oxygen for growth are called

Phosphorous is an essential component of

The orderly increase in the quantity of all the cellular components is known as

The organisms which can grow best in the presence of a low concentration of oxygen

The following organisms have been proposed as sources of single cell protein

Drug resistance in bacteria is mainly determined by factor:

Multiple antibiotic resistance is mediated by

Cells are active and synthesizing new protoplasm. This stage of growth is called

The most important vitamin for the growth of bacteria is

For the synthesis of amino acids cysteine, cystine and methionine the element required is

pH required for the growth of bacteria is

Radical shifts can be prevented by adding

The organisms which can grow both in presence and absence of oxygen

In the sigmoid curve (or) growth curve of bacteria how many stages are there

Trace elements are

“Antagonism “ is seen in

The vitamin required for Lactobacillus species is

Most bacteria do not require the ion