What potential issue did the introduction of objects to test hypotheses of what is in the black box cause?
A. The loss of tools to test hypotheses on what is in the box.
B. The need to revise old hypotheses and create new ones.
C. Creating too many possible candidates for what is in the box to be solved during class.
D. A potential bias towards the objects presented being what is in the box instead of the best fit judging by your observations alone.
Ans: D. A potential bias towards the objects presented being what is in the box instead of the best fit judging by your observations alone.
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True or false: the cells that arose on early Earth from primordial reactions are strikingly similar to animal cells of today
A. true B. false
The five reactions listed below occur during the noncyclic
pathway of ATP formation. Use them to respond to statements 85–89. a. reduction of NADP+ b. phosphorylation of ADP c. photolysis of water d. oxidation of chlorophyll e. reduction of chlorophyll D 85. This process releases electrons to fill “holes” in chlorophyll in noncyclic ATP formation. D 86. When light energy is absorbed by a leaf, the first result will be this. D 87. The final step that occurs during noncyclic ATP formation is this. M 88. High-energy phosphate bonds are formed during this process. D 89. Oxygen is produced by this process.
Which of the following lists correctly traces the path of a sound vibration as it moves through the ear?
A. auditory canal-tympanic membrane-malleus-incus-stapes-oval window-cochlea-cochlear nerve B. auditory canal-tympanic membrane-oval window-cochlea-malleus-incus-stapes-cochlear nerve C. auditory canal-malleus-incus-stapes-tympanic membrane-oval window-cochlea-cochlear nerve D. auditory canal-tympanic membrane-malleus-incus-stapes-cochlea-oval window-cochlear nerve E. auditory canal-malleus-incus-stapes-oval window-tympanic membrane-cochlea-cochlear nerve
The fungus Pneumocystis jiroveci is found in the lungs of most people in low numbers, but in immunocompromised people it overgrows, resulting in severe respiratory problems. The fungus is best described as
A) a parasite. B) resident microbiota. C) a mutualist symbiotic partner. D) transient microbiota. E) both resident microbiota and opportunistic pathogen.