Why is the distance of the Earth from the sun so crucial for life as we know it?
a. The distance provides the optimal temperature for water to occur in a liquid form.
b. The distance allows the Earth's orbit to have a year of a reasonable length.
c. The distance allows for multiple seasons in temperate climates, which was crucial for
development of different chemicals used to build the first protocells.
d. The distance provides ample opportunity for water to freeze into ice.
e. The distance ensures that ample water is available for all of the organisms on Earth.
A
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Which phylum includes organisms that have radial symmetry and stinging cells?
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Which of the following best illustrates the Bohr effect?
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A mother brings a child into the ER with a severe nosebleed that won't stop bleeding. She also tells the doctors that the child bruises very easily in response to very minor accidents. Given the information in the text, the doctor orders some tests and
finds that the young boy has ________. A) leukemia B) hemophilia C) embolus D) anemia
Which sequence accurately reflects the order in which light passes through the structures of the eye during vision?
A) pupil, cornea, lens, retina B) pupil, lens, cornea, retina C) cornea, lens, pupil, retina D) cornea, pupil, lens, retina