Infection with Helicobacter pylori can cause ________
A) gallstones
B) constipation
C) tooth decay
D) peptic ulcers
D
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Which of the following forces contribute to the stability of a DNA double helix?
A. hydrophobic interactions of bases in the same strand B. hydrogen bonding between bases in adjacent strands C. ionic interactions between the positively charged component of one base and the negatively charged component of the neighboring base D. hydrophobic interactions of bases in the same strand and hydrogen bonding between bases in adjacent strands E. hydrophobic interactions of bases in the same strand, hydrogen bonding between bases in adjacent strandsand ionic interactions between the positively charged component of one base and the negatively charged component of the neighboring base
You are given 100 acres of land and asked to use the land for long-term reduction of atmospheric CO2 levels. Which of the following is the best use of the land for this purpose?
A. Plant a rapidly growing grass that can be harvested every year and used to make ethanol that is added to gasoline. B. Plant slow-growing, bristle-cone pine trees that are known to live for thousands of years and reach a height of about 6 feet. C. Plant corn that is used to feed pigs that are then harvested for sausage meat that is sold at the grocery store. D. Plant a regular lawn and use the land as a park to encourage the local population to exercise more. E. Plant trees that grow rapidly, reach a huge size, and live for a long time.
The greatest mass extinction of all time occurred at the end of the ____ era, in which more than 90% of all existing
marine organisms became extinct. a. Archaean b. Paleozoic c. Cenozoic d. Mesozoic e. Proterozoic
Immunological attack on the islets of Langerhans resulting in the inability to produce insulin leads to type (I/II/IV) diabetes Mellitus
What will be an ideal response?