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TLS Online TPP Program

#Question id: 11133

Which of the following statements accurately describes a feature of temperature sensation by the nervous system?

#SCPH28 | Zoology
  1. Cold receptors continue to be activated even if skin temperature is lowered well below its freezing point
  2. Both cold and warm receptors each have very specific, nonoverlapping ranges of temperature sensitivity
  3. Warm and cold receptors respond to both steady state temperatures and to changes in temperature
  4. Temperature receptor function is the result of ion conduction changes and not changes in their metabolic rate
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TLS Online TPP Program

#Question id: 15602

#SCPH01 Biochemistry

The antibiotic erythromycin, the immunosuppressive drug FK506, and the cholesterol-lowering drug lovastatin all belong to which class.
TLS Online TPP Program

#Question id: 12942

#SCPH28 | Zoology

Name a single - stranded uracil containing vector which is grown in a selectable host deficit of the enzymes.
TLS Online TPP Program

#Question id: 89

#SCPH01 Biochemistry

In solution α-D-glucopyranose and β-D-glucopyranose ________.
TLS Online TPP Program

#Question id: 19701

#SCPH01 Biochemistry

Choose correct statement about Electrocardiogram Augmented Limb Leads.
a. In this type of limb lead system, two of the limbs are connected through the positive terminal of the electrocardiograph, and the third limb is connected to the negative terminal. 
b. In this type of limb lead system, two of the limbs are connected through the negative terminal of the electrocardiograph, and the third limb is connected to the positive terminal. 
c. When the positive terminal is on the right arm, the lead is known as the aVR lead; when on the left arm, it is known as the aVL lead; and when on the left leg, it is known as the aVF lead.
d. When the negative terminal is on the right arm, the lead is known as the aVR lead; when on the left arm, it is known as the aVL lead; and when on the left leg, it is known as the aVF lead.
Which of the following combination is correct?
TLS Online TPP Program

#Question id: 16134

#SCPH06 I Botany

You obtain 6 BACs (of known order, as shown below) and 7 STSs (of unknown order) that derive from a region of mouse chromosome 16 whose genomic sequence has not yet been finished.   
 
By PCR (using 20-bp primers at either end of each STS), you test each of the 6 BACs for the presence (+) or absence (-) of each of the 7 STSs. You obtain the following results:
 
You determine the DNA sequences of PCR products obtained at STS5 using BACs B, C, D, E, and F as PCR templates. The DNA sequences of PCR products obtained using BACs B and C are identical, but they differ by several nucleotide substitutions from the DNA sequences of PCR products obtained using BACs E and F. Oddly, PCR product obtained using BAC D appears to be a mixture of two sequences – one corresponding to the BAC B/ BAC C sequence and the other corresponding to the BAC E/ BAC F sequence. Briefly account for these findings, and explain how a single PCR assay could amplify two different sequences.