A new drug for depression was developed by taking a disaccharide, sucrose, and combining several different hydrophilic functional groups onto the molecule. After hearing about its structure, you are positive that this molecule has zero direct effect on
the brain. Why?
What will be an ideal response?
The blood brain barrier is going keep this drug from coming in contact with the brain because this new drug is too large and is hydrophilic instead of lipophilic. If this drug is significantly stopping depression then it is utilizing an indirect pathway that should be studied more.
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True or False: The United States experienced one of the worst droughts in its history in 2012. This severe drought is strong evidence for climate change
A. true B. false
In this equation p2 + 2pq + q2 = 1, what does the term 2pq represent?
A. The genotype frequency of homozygous recessive individuals B. The genotype frequency of homozygous dominant individuals C. The genotype frequency of heterozygous individuals D. The sum of the phenotype frequencies in the population
An average gram of forest soil contains about
A. 4 × 107 protists. B. 2 × 109 fungi. C. 4 × 107 bacteria and archaea. D. 2 × 109 bacteria and archaea.
How does gene flow introduce novel genetic variants into populations?
What will be an ideal response?