Which of the following is an example of correlation without causation?
A. People who commit crimes also consume bread.
B. Helicobacter pylori can cause ulcers.
C. Parents have children.
D. Illegal drug use causes an increase in crime.
E. HPV can cause cervical cancer.
Answer: A
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Treatment of drinking water by UV irradiation is effective at ________, but it does NOT remove ________
A) killing bacteria and eukaryotic pathogens / odor- and taste- altering organic compounds B) killing viruses / bacteria and eukaryotic pathogens C) removing order- and taste- altering organic compounds / viruses D) killing bacteria / viruses and eukaryotic pathogens
What class of sensory receptors directly affects the activity of the cardiac center in the medulla oblongata?
A. sensory cells in the juxtaglomerular apparati of the kidneys B. blood glucose sensors in the pancreas C. blood pH chemoreceptors in the aortic and carotid bodies D. baroreceptors in the arch of the aorta and in the carotid arteries E. osmoreceptors in the hypothalamus
Natural populations cannot exceed their carrying capacities
Indicate whether the statement is true or false
Which of the following viruses is a DNA virus that infects liver cells?
A) hepadnaviruses B) herpesviruses C) polyomaviruses D) poxviruses E) adenoviruses