Gram staining reveals the presence of gram-negative bacilli in the patient's stool. Thinking about the patient's spike in temperature, you understand now how this bacterium could cause a fever. Which of the following is the correct explanation?
A. Gram-negative bacteria have a thick peptidoglycan layer which confers their ability to cause fever.
B. Gram-negative bacteria have two periplasmic spaces which enhance their ability to cause fever.
C. Gram-negative bacteria have porin proteins in their outer membrane which confer their ability to cause fever.
D. Gram-negative bacteria have lipopolysaccharide in their outer membrane, and the lipid portion confers their ability to cause fever.
Ans: D. Gram-negative bacteria have lipopolysaccharide in their outer membrane, and the lipid portion confers their ability to cause fever.
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Which plasma membrane component is always found on the exterior surface of cells and allow cells to recognize each other?
a. Carbohydrates b. Enzymes c. Cholesterol d. Glycolipids
What kind of experiment or analysis could you conduct to define the location of the promoter elements of protein-coding genes?
What will be an ideal response?
Manipulating the joint in a position of least strain is called __________
Fill in the blank(s) with the appropriate word(s).