Hazardous waste
What will be an ideal response?
waste that is toxic, flammable, corrosive, explosive, or radioactive
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Metanephridia differ from protonephridia in all of the following ways except:
A. the urine produced in both systems is more dilute than the body fluids. B. metanephridia are surrounded by an extensive capillary network, whereas protonephridia are not. C. selective reabsorption of materials occurs via cells lining the tubules in protonephridia and via capillaries in metanephridia. D. fluid enters metanephridia through a funnel -shaped opening. E. fluid from the body cavity enters protonephridia without first being filtered.
Which of the following will disrupt Hardy-Weinberg equilibrium the least?
a. directional selection b. stabilizing selection c. migration d. reduction to a small population size e. non-random mating
The first serious attack on the idea of spontaneous generation was made by:
A. Francesco Redi B. John Needham C. Lazzaro Spallanzani D. Louis Pasteur
What carries amino acids to ribosomes during translation?
A. mRNA B. tRNA C. DNA D. rRNA E. Exons