BCM MCQs

A vibrant illustration of diverse microorganisms, including bacteria, fungi, and algae, in a natural setting, showcasing their various shapes and colors with a scientific backdrop.

Explore the World of Microorganisms

Test your knowledge about the fascinating realm of microorganisms with our comprehensive quiz! This quiz covers various topics, including bacteria, fungi, algae, and their roles in our ecosystem.

Challenge yourself with questions like:

How do bacteria multiply?
Which algae are most closely related to plants?
What group do oomycetes belong to?

55 Questions14 MinutesCreated by StudyingMicrobes42

The correct nomenclature for the skin bacterium which can cause food poisoning is:

The three major groups of eukaryotic microorganisms are:

Which penicillin-producing species of fungus was discovered by Alexander Fleming?

How many of the following factors affect the growth of microorganisms? Nutrient availability; water activity; pH; temperature; oxygen.

A microorganism which has an optimum temperature for growth of 4oC can be classified as:

How do bacteria multiply?

The main feature of a prokaryotic bacterial cell is:

Which phase of microbial growth in batch culture is characterised by the following: a decrease in primary metabolic activity, the production of secondary metabolites and a decrease in cell viability?

Choose the TWO correct answers from the five options. A bacterial culture enters stationary phase because:

The cells are preparing for rapid growth.

Toxic products of metabolism may have accumulated.

The energy source may have been depleted.

The cells have aged and old cells cease dividing.

The cells must synthesise new proteins before they can resume growth.

A fungal disease of humans, involving a soreness and itching of tissues between the toes, is known as:

Adaptation of archaea to high temperatures is mediated by

The main feature of a prokaryotic bacterial cell is:

What group or groups are oomycetes, diatoms, red algae and amoebozoans currently classified as belonging to?

The term "Protozoa" literally means "first animals". What is outdated about this name?

Protozoa do not have legs

Protozoa cannot move.

Protozoa evolved after true animals.

Protozoa do not have fur or feathers.

Some protozoa can photosynthesise

What is the range of highest temperatures known currently for the survival and growth of archaea?

Which statement is true?

The specific origin of the nucleic acid polymerases used by viruses is still unknown.

Viruses do not contain their own nucleic acid polymerases.

All viruses contain their own nucleic acid polymerases.

Viruses' heterogeneity derives from variations in protein as the genetic material.

Some viruses contain their own nucleic acid polymerases.

A. The protein coat of the virus is called the capsid. B. Viroids lack protein coats. Select one:

Viral replication is: Select one:

Independently carried out by meiosis.

Independent of the cell's chromosomes but dependent on the cell itself.

Dependent on both the cell's chromosomes and the cell itself.

Dependent on the cell's chromosomes but independent of the cell itself.

Independent of both the cell's chromosomes and the cell itself (although the cell does provide a convenient matrix for replication).

Beer's law relates the:

Amount of Stella one can drink in one session

Concentration of a substance and the amount of transmitted light detected.

Molecular mass of a substance.

Difference between the colour of two different solutions.

Distance the incidence light has to travel.

A primary objective of cell fractionation is to:

Determine the size of various organelles.

Sort cells based on their size and weight.

Separate the major organelles so that their particular functions can be investigated.

Separate lipid-soluble from water-soluble molecules.

View the structure of cell membranes.

In the fractionation of homogenized cells using centrifugation, the primary factor that determines whether a specific cellular component ends up in the supernatant or the pellet is:

The presence or absence of lipids in the component.

The size and mass of the component.

The relative solubility of the component.

The percentage of carbohydrates in the component.

The presence or absence of nucleic acids in the component.

Enzymes lower barriers that block chemical reactions by

The Km of an enzyme is:

The initials for Karl Marx

The substrate concentration where 25% the maximum velocity is reached.

The substrate concentration where half the maximum velocity is reached.

The substrate concentration where twice the maximum velocity is reached.

Its maximum velocity

The advantage of light microscopy over electron microscopy is that:

Light microscopy provides higher contrast than electron microscopy.

Light microscopy provides for higher magnification than electron microscopy.

Light microscopy provides for higher resolving power than electron microscopy.

Light microscopy allows dynamic processes in living cells to be viewed.

Specimen preparation for light microscopy does not produce artefacts.

What is the term for the positive and negative ions of a compound breaking apart in solution?

Quantitative analysis:

Is not necessary in a bioanalytical test.

Always yields a positive result.

Is always necessary in a bioanalytical test.

Determines the amount of a particular substance in a sample.

Detects the presence or absence of a substance in a sample.

Which statement about cell division is INCORRECT?

All cell division (both mitosis and meiosis) results in genetically identical daughter cells.

Cytokinesis is the division of the cytoplasm.

The frequency of cell division varies with the type of cell.

Mitosis is the division of the genetic material in the nucleus.

The continuity of life is based on cell division

Which statement about eukaryotic cell cycle control is CORRECT?

Cell cycle control molecules - cyclins are present at a constant concentration in the growing cell.

Checkpoint of mammalian cell cycle is only found in the S phase.

Eukaryotic cell cycle is only regulated by build-in cytoplasmic signals.

Eukaryotic cell cycle is regulated at certain checkpoints by both internal and external signals.

Cyclin-Cdk complex halts the cell cycle at checkpoint.

Fredrick Sanger is the only person to have:

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Explore the World of Microorganisms

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