A cleaning solution used on the laboratory bench top to kill bacteria that are potentially harmful to humans would be called a(n):
a. surfactant.
b. disinfectant.
c. biocide.
d. antiseptic.
B
A disinfectant is used on inanimate objects to kill bacteria that are potentially harmful to humans, whereas an antiseptic is a disinfectant that is generally used on living tissue such as skin.
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The cyanobacterium Trichodesmium ________.
A. fixes a significant amount of N2 in oceanic environments B. uses nitrite as a source of nitrogen C. is a spherical organism D. fixes N2 during the day
Simultaneous transport of two molecules across the cell membrane in the same direction by one transporter is called ________
Fill in the blank with correct word.
A carnivorous plant, such as a sundew, may be considered both a ________ when it eats a carnivorous spider
A) primary consumer and a secondary consumer B) producer and a secondary consumer C) primary consumer and a tertiary consumer D) producer and a primary consumer E) producer and a tertiary consumer
Which of these is the process by which homologues exchange chromosome segments at the beginning of meiosis to increase genetic variability in offspring?
What will be an ideal response?