TLS Online TPP Program

#Question id: 15186


Electrophoretic resolution is achieved by adjusting
A. Current
B. Buffer concentration
C. Chemical nature of Buffer
D. Concentration of supporting media

#Unit 13. Methods in Biology
  1. A and C
  2. B and D
  3. Only D
  4. all correct
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TLS Online TPP Program

#Question id: 281

#Unit 1. Molecules and their Interaction Relevant to Biology

Histones associate with DNA primarily through ________.

TLS Online TPP Program

#Question id: 1403

#Unit 4. Cell Communication and Cell Signaling

Tumor-suppressor genes encode proteins with which of the following functions?

a. growth-promoting               b. growth-arresting                  c. pro-apoptotic

d. anti-apoptotic                      e. DNA repair

TLS Online TPP Program

#Question id: 4181

#Unit 3. Fundamental Processes

The codon for the amino acid specified by the anticodon at the anticodon arm of tRNA is covalently linked to tRNA at the

TLS Online TPP Program

#Question id: 15837

#Unit 8. Inheritance Biology

You are interested in a new type of autosomal dominant mutation that gives purple eyes in Drosophila. You have a true-breeding purple-eyed line carrying a mutation that you call pr-1. You have isolated a second purple-eyed mutation that you call pr-2, which you have established in a true-breeding line that also carries a recessive marker st, which gives stubby legs. You cross a fly from the pr-1 line to a fly from the st, pr-2 line producing F1 females which you then cross to males from a true breeding st line (normal eyes). From this cross, 1000 progeny flies can be categorized into four different phenotypic classes:
                      
What is the relative order of st, pr-1 and pr-2?

TLS Online TPP Program

#Question id: 10882

#Unit 10. Ecological Principles

The difference between net and gross primary productivity would likely be greatest for