Gram-negative organisms

A. are more susceptible to antibiotics that target peptidoglycan than gram-positive organisms.
B. are less susceptible to antibiotics that target peptidoglycan than gram-positive organisms.
C. stain purple in the Gram stain.
D. encompass all pathogens.
E. None of the choices is correct.


Answer: B. are less susceptible to antibiotics that target peptidoglycan than gram-positive organisms.

Biology & Microbiology

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Thalassemia is a recessive blood disease caused by reduced synthesis of one of the globin genes

While SCD is a mutation in the structure of hemoglobin, thalassemias can also be caused by mutations in the regulatory elements, causing too little globin to be produced and resulting in anemia. You've designed a DNA probe that you want to use to screen a family for a rare mutation in the ?-globin gene that causes thalassemia. First you will use the probe for northern blotting. What information will the northern blot tell you? A) whether the mRNA for ?-globin is being translated into functional proteins in a given cell population B) whether the amount of the ?-globin gene being transcribed (mRNA levels) is within normal range C) the size of the mRNA being transcribed D) the presence of a particular mutation by restriction fragment analysis E) both B and C are correct

Biology & Microbiology

Using Figure 53-2, identify the point that indicates the carrying capacity for this population

a. A
b. B
c. C
d. D
e. Cannot be determined from this graph.

Biology & Microbiology

Mutations may be detrimental, beneficial, or neutral to the cell or organism in which they occur

Indicate whether the statement is true or false

Biology & Microbiology

The ________ is made up of the entire Earth and all of the living organisms that inhabit it

Fill in the blank(s) with correct word

Biology & Microbiology