Podcast
Questions and Answers
What is a characteristic of eukaryotic cells?
What is a characteristic of eukaryotic cells?
- Their genetic material is not enclosed by a nuclear membrane
- They have a true nucleus enclosed by a nuclear membrane (correct)
- They have genetic material spread throughout the cytoplasm
- They lack a true nucleus
What is a typical feature of eukaryotic cells?
What is a typical feature of eukaryotic cells?
- Contain membrane-bound organelles (correct)
- Lack membrane-bound organelles
- Have a cell wall composed of peptidoglycan
- Lack a plasma membrane
What distinguishes eukaryotic cells from prokaryotic cells?
What distinguishes eukaryotic cells from prokaryotic cells?
- Absence of a true nucleus enclosed by a nuclear membrane
- Lack of a plasma membrane
- Presence of membrane-bound organelles (correct)
- Absence of genetic material
Which organelle is absent in prokaryotic cells?
Which organelle is absent in prokaryotic cells?
What is a membrane-bound organelle present in eukaryotic cells but absent in prokaryotic cells?
What is a membrane-bound organelle present in eukaryotic cells but absent in prokaryotic cells?
Which organelle is specific to plant cells and not found in prokaryotic cells?
Which organelle is specific to plant cells and not found in prokaryotic cells?
What is the genetic characteristic of prokaryotic cells?
What is the genetic characteristic of prokaryotic cells?
What is the role of histones in eukaryotic cells that is not present in prokaryotic cells?
What is the role of histones in eukaryotic cells that is not present in prokaryotic cells?
What is the composition of 70S ribosomes found in bacteria?
What is the composition of 70S ribosomes found in bacteria?
Which type of prokaryotes is mentioned as an exception with more complex lipid molecules in their membranes?
Which type of prokaryotes is mentioned as an exception with more complex lipid molecules in their membranes?
Which of the following lipid molecules are NOT mentioned as present in the membranes of prokaryotes with complex lipids?
Which of the following lipid molecules are NOT mentioned as present in the membranes of prokaryotes with complex lipids?
Which of the following genera form endospores in harsh conditions?
Which of the following genera form endospores in harsh conditions?
In what conditions do certain genera form endospores?
In what conditions do certain genera form endospores?
What are endospores?
What are endospores?
In what type of cells are endospores found?
In what type of cells are endospores found?
How are endospores visualized microscopically with Gram stain?
How are endospores visualized microscopically with Gram stain?
Which stain can be used to specifically visualize endospores? (multiple answers)
Which stain can be used to specifically visualize endospores? (multiple answers)
What is the main component of the plasma membrane in prokaryotes?
What is the main component of the plasma membrane in prokaryotes?
Which type of cells do not contain sterols in their plasma membranes?
Which type of cells do not contain sterols in their plasma membranes?
What distinguishes the plasma membrane of eukaryotic cells from that of prokaryotic cells?
What distinguishes the plasma membrane of eukaryotic cells from that of prokaryotic cells?
Which type of prokaryotes is an exception in terms of plasma membrane composition?
Which type of prokaryotes is an exception in terms of plasma membrane composition?
What is the primary function of the plasma membrane in prokaryotes?
What is the primary function of the plasma membrane in prokaryotes?
Which process occurs at the location of the plasma membrane in prokaryotes?
Which process occurs at the location of the plasma membrane in prokaryotes?
Apart from serving as an osmotic barrier, what other function does the plasma membrane have in prokaryotes?
Apart from serving as an osmotic barrier, what other function does the plasma membrane have in prokaryotes?
What is the primary function of the cell wall?
What is the primary function of the cell wall?
How are types of cell walls categorized?
How are types of cell walls categorized?
What is the primary component of the gram-positive cell wall?
What is the primary component of the gram-positive cell wall?
What are the glycan chains in the peptidoglycan layer of the gram-positive cell wall composed of?
What are the glycan chains in the peptidoglycan layer of the gram-positive cell wall composed of?
What is the unique feature of the Gram-positive cell wall?
What is the unique feature of the Gram-positive cell wall?
Where is lipoteichoic acid anchored in the Gram-positive cell wall?
Where is lipoteichoic acid anchored in the Gram-positive cell wall?
Where is teichoic acid anchored in the Gram-positive cell wall?
Where is teichoic acid anchored in the Gram-positive cell wall?
What is the primary function of teichoic acid in the Gram-positive cell wall?
What is the primary function of teichoic acid in the Gram-positive cell wall?
Which component is teichoic acid anchored to in the Gram-positive cell wall?
two answers
Which component is teichoic acid anchored to in the Gram-positive cell wall? two answers
What is the composition of the outer membrane unique to the Gram-negative cell wall?
What is the composition of the outer membrane unique to the Gram-negative cell wall?
What distinguishes the inner peptidoglycan layer of Gram-negative cell walls from that of Gram-positive cell walls?
What distinguishes the inner peptidoglycan layer of Gram-negative cell walls from that of Gram-positive cell walls?
What is responsible for producing fever and shock conditions in patients infected with Gram-negative bacteria?
What is responsible for producing fever and shock conditions in patients infected with Gram-negative bacteria?
Where is the periplasmic space located in Gram-negative bacteria?
Where is the periplasmic space located in Gram-negative bacteria?
What are the three regions of LPS?
What are the three regions of LPS?
What is the primary stain used to visualize Mycobacterium and Nocardia?
What is the primary stain used to visualize Mycobacterium and Nocardia?
What is the waxy cell wall of Mycobacterium and Nocardia primarily composed of?
(mulitple)
What is the waxy cell wall of Mycobacterium and Nocardia primarily composed of? (mulitple)
Which of the following genera have a Gram-positive cell wall structure and a waxy layer of glycolipids and fatty acids?
Which of the following genera have a Gram-positive cell wall structure and a waxy layer of glycolipids and fatty acids?
Which of the following bacteria lack a cell wall?
Which of the following bacteria lack a cell wall?
What is a distinguishing feature of Mycoplasma spp. and Ureaplasma spp. cell membranes?
What is a distinguishing feature of Mycoplasma spp. and Ureaplasma spp. cell membranes?
Which of the following is a characteristic of Mycoplasma spp. and Ureaplasma
Which of the following is a characteristic of Mycoplasma spp. and Ureaplasma
What are capsules primarily made of?
What are capsules primarily made of?
What is the role of capsules in pathogenicity?
multiple answers
What is the role of capsules in pathogenicity? multiple answers
How does a slime layer differ from a capsule?
How does a slime layer differ from a capsule?
What are flagella in bacteria primarily responsible for?
What are flagella in bacteria primarily responsible for?
What is the primary function of pili/fimbriae in bacterial cells?
What is the primary function of pili/fimbriae in bacterial cells?
What is the primary difference between flagella and pili/fimbriae in bacterial cells?
What is the primary difference between flagella and pili/fimbriae in bacterial cells?
Which bacterial shape is characterized by a spiral structure?
Which bacterial shape is characterized by a spiral structure?
What term is used to describe a species varying in size and shape within a pure culture?
What term is used to describe a species varying in size and shape within a pure culture?
Which bacterial shape is characterized by a rod-like structure?
Which bacterial shape is characterized by a rod-like structure?
Which bacterial shape is characterized by a spherical structure?
Which bacterial shape is characterized by a spherical structure?
Which bacteria are associated with cocci shape?
Which bacteria are associated with cocci shape?
Which bacteria are associated with bacilli shape?
Which bacteria are associated with bacilli shape?
Which bacteria are associated with spirochetes shape?
Which bacteria are associated with spirochetes shape?
What is a common structure in which bacterial cells are arranged?
What is a common structure in which bacterial cells are arranged?
Which bacteria are associated with grape-like clusters?
Which bacteria are associated with grape-like clusters?
Which bacteria are found in pairs?
multiple
Which bacteria are found in pairs? multiple
Which bacteria are found in chains?
Which bacteria are found in chains?
What represents 50% of the dry weight of a bacterium?
What represents 50% of the dry weight of a bacterium?
What makes up 14% of the dry weight of a bacterium?
What makes up 14% of the dry weight of a bacterium?
What is needed for performing cellular functions in bacteria?
What is needed for performing cellular functions in bacteria?
What is the primary nutritional need for making cellular constituents in bacteria?
What is the primary nutritional need for making cellular constituents in bacteria?
What are the three major nutritional needs for growth in bacteria
What are the three major nutritional needs for growth in bacteria
What is the primary difference between autotrophs and heterotrophs?
What is the primary difference between autotrophs and heterotrophs?
How do autotrophs obtain energy?
How do autotrophs obtain energy?
What is a defining characteristic of all bacteria that inhabit the human body?
What is a defining characteristic of all bacteria that inhabit the human body?
