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Q1. The control center for body temperature regulation is in a region of the brain known as the hypothalamus. while the body is fighting an infection, the hypothalamus alters its control of body temperature, allowing temperature to climb higher than the normal value of about 38 degrees C. Explain how this could be considered a negative feedback mechanism.
Q2. Consider the HIV enzyme called protease. The amino acid residues at the active site are highly hydrophobic. In designing a drug that would bind to the active site and jam it, researchers must use which type of molecule?
Which of the following tasks CANNOT be performed by earthworms?
How many nucleotides are translated in the CFTR protein and with regard to the ?F508 mutation: At the DNA level, what specific alteration has occurred? (3 points)
According to your understanding of the nitrate reductase and nitrite reductase tests, why would the inclusion of nitrite inhibit anaerobic growth?
Draw the chromosomes found in the F1 female used for the test cross. Include both the gene order and the map distances between the alleles.
In ward's Ap biology lab 7 (the drosophila lab) describe the parental cross you received; use genetic symbols. Depict a punnett square to show how the possible allelic combinations for this gene in the F1 generation.
If your dog is heterozygous for the allele, it will not be possible to use him for stud, since the genetic defect may be passed on. How would you go about determining whether Zippy carries this allele?
What is the consequence of administering a hypothetical drug which dilates blood vessels in the periphery without directly affecting other tissues?
Which one of the following statements about the structure shown above is correct?
Rate of flow of oxygen across the mitochondrial membrane is 43 nmoles/min when the intra-mitochondrial concentration is 120micrometers, O2 and the cytosolic concentration of o2 is 100 micrometers.
The gecko is a reptile that has amazing ability to climb smooth surfaces even glass. Recent discoveries indicate that geckos stick to smooth surfaces via van der Waals interactions in septae on their feet and smooth surface.
Why is it beneficial to plants that soil particles have negatively charged surfaces.
A double stranded DNA molecule with the sequence shown here produces, in vivo, a polypeptide that is five amino acids long.
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