MCB 3020 Exam Questions with Latest
Update
Differentiate between the types of microorganisms studied by microbiologists
-eukaryote - Answer-An organism characterized by having cells containing DNA in a
membrane-bound Organelle
Differentiate between the types of microorganisms studied by microbiologists
-prokaryote - Answer-An organism characterized by having a cell lacking a membrane-
bound nucleus
Differentiate between the types of microorganisms studied by microbiologists
-prion - Answer-An infectious agent consisting of only protein
Differentiate between the types of microorganisms studied by microbiologists
-viroid - Answer-An infectious agent consisting of only RNA
Differentiate between the types of microorganisms studied by microbiologists
-virus - Answer-An infectious agent made up of protein, nucleic acids and sometimes a
lipid membrane
chloroplast function - Answer-Location for the cellular process of photosynthesis
peroxisomes function - Answer-Location for storage of protective compounds that break
down lipids and detoxify certain chemicals
endoplasmic reticulum function - Answer-Location for protein modification prior to
secretion or delivery to other cellular compartments
lysosome function - Answer-Location for storage of many types of degradative enzymes
nucleus - Answer-Location for DNA and RNA synthesis
golgi apparatus function - Answer-Location for protein synthesis and some protein
modifications
mitochondria function - Answer-Location for most metabolic reactions in cellular
respiration
, Which of the following must leave the nucleus via the nuclear pore complexes? -
Answer-Immature ribosomal subunits, tRNA, and mRNA
The most important distinguishing feature of eukaryotes that is lacking in prokaryotes is
- Answer-the division of the cell into compartments bounded by membranes.
Enzymes needed to digest all types of macromolecules are found in - Answer-
lysosomes
- Answer-
Which of the following is a function of the mitochondrion? - Answer-ATP synthesis,
Electron Transport, Tricarboxylic acid cycle enzyme reactions.
Which is the most common cell wall in most Archaea? - Answer-S Layer
Carl Woese distinguished between the members of the Archaea and the Bacteria using
studies of their ________. - Answer-ribosomal RNA
Which of the following protects bacteria from lysis in dilute solutions and helps to
determine their cellular morphology or shape? - Answer-peptidoglycan
Which bacterial cytoplasmic structure is used for storage of Carbon, Glycogen, Amino
Acids, and other nutrients? - Answer-storage inclusion
Extrachromosomal DNA in Bacteria and Archaea are commonly found in the form of -
Answer-plasmids
Which acellular agent is composed of nucleic acids only? - Answer-satellites
The term used to describe bacteria that are rod-shaped is - Answer-bacillus
Which of the following experiments is used to identify new pathogens? - Answer-koch
postulates
Which acellular agent is composed of proteins only? - Answer-prions
Chemotaxis is a process by which bacteria - Answer-move toward an attractant or away
from a repellent.
The first of Koch's postulates is - Answer-the microorganism must be present in every
case of the disease but absent from healthy organisms.
The first direct evidence of primitive cellular life was the 1977 discovery of _________
fossils in the Swartkoppie chert, a type of granular sedimentary rock rich in silica -
Answer-microbial
Update
Differentiate between the types of microorganisms studied by microbiologists
-eukaryote - Answer-An organism characterized by having cells containing DNA in a
membrane-bound Organelle
Differentiate between the types of microorganisms studied by microbiologists
-prokaryote - Answer-An organism characterized by having a cell lacking a membrane-
bound nucleus
Differentiate between the types of microorganisms studied by microbiologists
-prion - Answer-An infectious agent consisting of only protein
Differentiate between the types of microorganisms studied by microbiologists
-viroid - Answer-An infectious agent consisting of only RNA
Differentiate between the types of microorganisms studied by microbiologists
-virus - Answer-An infectious agent made up of protein, nucleic acids and sometimes a
lipid membrane
chloroplast function - Answer-Location for the cellular process of photosynthesis
peroxisomes function - Answer-Location for storage of protective compounds that break
down lipids and detoxify certain chemicals
endoplasmic reticulum function - Answer-Location for protein modification prior to
secretion or delivery to other cellular compartments
lysosome function - Answer-Location for storage of many types of degradative enzymes
nucleus - Answer-Location for DNA and RNA synthesis
golgi apparatus function - Answer-Location for protein synthesis and some protein
modifications
mitochondria function - Answer-Location for most metabolic reactions in cellular
respiration
, Which of the following must leave the nucleus via the nuclear pore complexes? -
Answer-Immature ribosomal subunits, tRNA, and mRNA
The most important distinguishing feature of eukaryotes that is lacking in prokaryotes is
- Answer-the division of the cell into compartments bounded by membranes.
Enzymes needed to digest all types of macromolecules are found in - Answer-
lysosomes
- Answer-
Which of the following is a function of the mitochondrion? - Answer-ATP synthesis,
Electron Transport, Tricarboxylic acid cycle enzyme reactions.
Which is the most common cell wall in most Archaea? - Answer-S Layer
Carl Woese distinguished between the members of the Archaea and the Bacteria using
studies of their ________. - Answer-ribosomal RNA
Which of the following protects bacteria from lysis in dilute solutions and helps to
determine their cellular morphology or shape? - Answer-peptidoglycan
Which bacterial cytoplasmic structure is used for storage of Carbon, Glycogen, Amino
Acids, and other nutrients? - Answer-storage inclusion
Extrachromosomal DNA in Bacteria and Archaea are commonly found in the form of -
Answer-plasmids
Which acellular agent is composed of nucleic acids only? - Answer-satellites
The term used to describe bacteria that are rod-shaped is - Answer-bacillus
Which of the following experiments is used to identify new pathogens? - Answer-koch
postulates
Which acellular agent is composed of proteins only? - Answer-prions
Chemotaxis is a process by which bacteria - Answer-move toward an attractant or away
from a repellent.
The first of Koch's postulates is - Answer-the microorganism must be present in every
case of the disease but absent from healthy organisms.
The first direct evidence of primitive cellular life was the 1977 discovery of _________
fossils in the Swartkoppie chert, a type of granular sedimentary rock rich in silica -
Answer-microbial
