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Microbiology

Chapter 3

QuestionAnswer
Which of the following have the thickest peptidoglycan layer in the cell wall? Gram positive bacteria
Which of the following is TRUE concerning LPS? It is also called endotoxin
Lysosome is an antibacterial enzyme in human tears that degrades peptidoglycan. Which type of organism would be MOST sensitive to lysozomes? Gram-positive bacteria
Mycoplasma have no cell wall, only membrane. What characteristic would you expect for these bacteria? Sensitivity to osmotic lysis
Which of the following statements BEST describes the ribosomes of eukaryotic cells? Eukaryotic ribosomes are 80s
Which of the following is NOT a function of the cytoskeleton in eukaryotic cells? Helps the cells sense nutrients in its environment
Which organelle is responsible for receiving processing and packaging large molecules that are destined to be secreted from the cell? Golgi Body
The ______ plays a role in lipid synthesis and transport Smooth endoplasmic reticulum
What structures must eukaryotic cells have in order to harvest light energy during photosynthesis? Chloroplasts
The lab synthesis of urea disproved what idea? Organic chemicals could come only from living organisms
What are two types of prokaryotic organisms? Bacteria and archaea
What is the typical size range for eukaryotic cells? 10-100 microliters
Which of the following is NOT a characteristic of all living things? Movement
Which of these is found ONLY in eukaryotes? Endocytosis
Sometimes prokaryotic cells are surrounded by a gelatinous sticky substance. What is this structure called? Glycocalyx
Which of the following is NOT a part of bacterial flagella? Fimbria
Cells use _______ to transfer DNA from one cell to another via conjugation. Pili
Which of the following BEST describes one of the functions of the bacterial cell wall? Protection from osmotic forces
Where can lipopolysaccharide be found? In the outer membrane of Gram-negative bacteria cells.
Which of the following is a function of the cytoplasmic membrane? To control the passage pf substances into and out of the cell
Which of the following is TRUE of the selectively permeable membrane? It maintains a concentration gradient
Which of the following statements about endospores is TRUE? Endospores form in response to harsh environments conditions
Which of the following is a difference between prokaryotic and archaeal flagella? Archaeal flagella are powered by energy stores in ATP
Which of these is found in BOTH Gram-negative and Gram-positive cell walls? Peptidoglycan
Created by: paigewebb12
 

 



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