The second law of thermodynamics states that
a. energy can be transformed into matter, and
because of this, something is obtained for
nothing.
b. energy can be destroyed during nuclear
reactions such as those that occur inside the
sun.
c. if energy is gained by one region of the
universe, another place in the universe also
must gain energy in order to maintain the
balance of nature.
d. energy tends to flow from concentrated to
less concentrated forms.
e. none of these is true
D
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A child is stung by a bee at the beginning of the summer and has mild swelling and itching at the site of the sting
In late summer, the child is stung again, but this time rapidly develops anaphylaxis and is diagnosed with type I hypersensitivity to bee venom. If the child is allergic to bee venom, why was there no reaction after the first bee sting? What specifically happened after the first sting that led to the allergic reaction? What will be an ideal response?
When scientists placed ATP Synthase linked to fluorescent actin on a microscope slide and added ATP, the actin could be seen spinning counterclockwise. If the experiment could be replicated in a cell going through oxidative phosphorylation what would happen?
A. The actin would spin clockwise because ATP would be hydrolyzed. B. The actin would spin clockwise because ATP would be produced instead of hydrolyzed. C. The actin would spin counterclockwise because ATP would be hydrolyzed. D. The actin would spin counterclockwise because ATP would be produced instead of hydrolyzed.
Which of the following statements describes events during oogenesis?
A. The primary spermatocyte divides producing two spermatids. B. The primary oocyte divides producing four diploid cells. C. The primary oocyte divides producing two haploid cells. D. The primary oocyte divides producing four haploid cells. E. None of these events occur during oogenesis.
Place the following events of bacterial conjugation in order from first to last.1-DNA replication2-an enzyme joins F factor DNA ends3-sex pilus shortens4-DNA transfer5-an enzyme cuts F factor DNA
A. 5, 1, 3, 4, 2 B. 1, 2, 3, 4, 5 C. 3, 5, 4, 2, 1 D. 3, 5, 1, 2, 4 E. 3, 5, 1, 4, 2