An oil-water mixture works as an insecticidal spray against mosquitoes and other insects because it _____
A) blocks the openings into the tracheal system
B) interferes with gas exchange across the capillaries
C) clogs their bronchi
D) prevents gases from leaving the atmosphere
A
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What will be an ideal response?
Members of the ____ ("jointed feet") Ecdysozoan phylum have a segmented body encased in a rigid exoskeleton made
of chitin plus other materials.
a. Arthropoda b. Onychophora c. Nemertea d. Annelida e. Nematoda
Which acid is a severe air pollutant?
1.primary producer 2.primary consumer 3.secondary consumer 4.tertiary consumer
You are assembling a model of a chromosome, but begin having some trouble when you get to the step of forming chromatin loops. If you are unable to resolve this problem, what step of chromosome structure would you be unable to achieve?
A. Nucleosome B. Solenoid C. Histone/DNA complex D. Rosettes