Due to the increase in problems with antibiotic resistance, drug companies have greatly increased their investment in antibiotic research, resulting in a record number of applications for approval of new antibiotics.
a. true
b. false
Answer: b. false
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Scientists speculate that extinctions did not occur in Africa as they did on other continents because animals coevolved with ________ in Africa.
A. humans B. plants C. parasites D. diseases
What characteristics do viruses and bacteria have in common?
The cylinders in this experiment represent a 24-hour period. The light area represents light periods during a 24-hr. period and the dark area represents dark periods during a 24-hr. period. The critical length of dark vs. light periods for flowering is depicted by the dotted line. Note that some plants are flowering and some are not flowering. Study the results of this experiment on photoperiodism and flowering to determine whether the following statements are true or false.The conclusion drawn from these results is that the length of the dark period, not the light period, controls flowering.
Answer the following statement true (T) or false (F)
Spallanzani's experiments contradicted the experiments of (Needham/Redi/Pasteur) on spontaneous generation
What will be an ideal response?