Level 3: Synthesis/Evaluation9. EVOLUTION CONNECTION DRAW IT Some scientiststhink that life elsewhere in the universe might be basedon the element silicon, rather than on carbon, as on Earth.Look at the electron distribution diagram for silicon inFigure 2.7 and draw the Lewis dot structure for silicon. Whatproperties does silicon share with carbon that would makesilicon-based life more likely than, say, neon-based life oraluminum-based life?10. SCIENTIFIC INQUIRY 50 years ago, pregnant women whowere prescribed thalidomide for morning sickness gave birthto children with birth defects. Thalidomi de is a mixture of twoenantiomers; one reduces morning sickness, but the othercauses severe birth defects. Today, the FDA has approved thisdrug for non-pregnant individuals with Hansen's disease(leprosy) or newly diagnosed multiple myeloma, a bloodand bone marrow cancer. The beneficial enantiomer can besynthesized and given to patients, but over time, both thebeneficial and the harmful enantiomer can be detected in theDody. Propose a possible explanation for the presence of theharmful enantiomer.11. WRITE ABOUT A THEME: ORGANIZATION In 1918, anepidemic of sleeping sickness caused an unusual rigid paralysisin some survivors, similar to symptoms of advanced Parkinson'sdisease. Years later, L-dopa (below, left), a chemical used totreat Parkinson's disease, was given to some of these patients.L-dopa was remarkably effective at eliminating the paralysis,at least temporarily. However, its enantiomer, D-dopa (right),was subsequently shown tohave no effect at all, as is thecase for Parkinson's disease. Ina short essay (100-150 words),discuss how the effectivenof one enantiomother illace

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Level 3: Synthesis/Evaluation
9. EVOLUTION CONNECTION DRAW IT Some scientists
think that life elsewhere in the universe might be based
on the element silicon, rather than on carbon, as on Earth.
Look at the electron distribution diagram for silicon in
Figure 2.7 and draw the Lewis dot structure for silicon. What
properties does silicon share with carbon that would make
silicon-based life more likely than, say, neon-based life or
aluminum-based life?
10. SCIENTIFIC INQUIRY 50 years ago, pregnant women who
were prescribed thalidomide for morning sickness gave birth
to children with birth defects. Thalidomi de is a mixture of two
enantiomers; one reduces morning sickness, but the other
causes severe birth defects. Today, the FDA has approved this
drug for non-pregnant individuals with Hansen's disease
(leprosy) or newly diagnosed multiple myeloma, a blood
and bone marrow cancer. The beneficial enantiomer can be
synthesized and given to patients, but over time, both the
beneficial and the harmful enantiomer can be detected in the
Dody. Propose a possible explanation for the presence of the
harmful enantiomer.
11. WRITE ABOUT A THEME: ORGANIZATION In 1918, an
epidemic of sleeping sickness caused an unusual rigid paralysis
in some survivors, similar to symptoms of advanced Parkinson's
disease. Years later, L-dopa (below, left), a chemical used to
treat Parkinson's disease, was given to some of these patients.
L-dopa was remarkably effective at eliminating the paralysis,
at least temporarily. However, its enantiomer, D-dopa (right),
was subsequently shown to
have no effect at all, as is the
case for Parkinson's disease. In
a short essay (100-150 words),
discuss how the effectiven
of one enantiom
other ill
ace
help_outline

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Level 3: Synthesis/Evaluation 9. EVOLUTION CONNECTION DRAW IT Some scientists think that life elsewhere in the universe might be based on the element silicon, rather than on carbon, as on Earth. Look at the electron distribution diagram for silicon in Figure 2.7 and draw the Lewis dot structure for silicon. What properties does silicon share with carbon that would make silicon-based life more likely than, say, neon-based life or aluminum-based life? 10. SCIENTIFIC INQUIRY 50 years ago, pregnant women who were prescribed thalidomide for morning sickness gave birth to children with birth defects. Thalidomi de is a mixture of two enantiomers; one reduces morning sickness, but the other causes severe birth defects. Today, the FDA has approved this drug for non-pregnant individuals with Hansen's disease (leprosy) or newly diagnosed multiple myeloma, a blood and bone marrow cancer. The beneficial enantiomer can be synthesized and given to patients, but over time, both the beneficial and the harmful enantiomer can be detected in the Dody. Propose a possible explanation for the presence of the harmful enantiomer. 11. WRITE ABOUT A THEME: ORGANIZATION In 1918, an epidemic of sleeping sickness caused an unusual rigid paralysis in some survivors, similar to symptoms of advanced Parkinson's disease. Years later, L-dopa (below, left), a chemical used to treat Parkinson's disease, was given to some of these patients. L-dopa was remarkably effective at eliminating the paralysis, at least temporarily. However, its enantiomer, D-dopa (right), was subsequently shown to have no effect at all, as is the case for Parkinson's disease. In a short essay (100-150 words), discuss how the effectiven of one enantiom other ill ace

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Step 1

In 1950s and early 1960s, the major drug used for morning sickness was thalidomide during pregnancy but it caused several birth defects when taken in first trimester. This drug inhibited the proper growth of the fetus causing terrible defects. Due to these reasons it was banned at that time.

Step 2

At present time this drug is used in treatment of several types skin diseases including leprosy and cancers. Thalidom...

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