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TLS Online TPP Program

#Question id: 3640

Which of the following is true for the mechanism of excision repair?

#Unit 3. Fundamental Processes

  1. Endonuclease cleavage removes a portion of the damaged strand.

  2. The gap is filled in by DNA polymerase I

  3. The sugar-phosphate backbone is resealed by DNA ligase.

  4. All of the above are correct.

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TLS Online TPP Program

#Question id: 12990

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect statement related to ionic interactions
a. Ionic interactions takes place between positively and negatively charged amino acids side chain.
b. Ionic interactions takes place between positively and positively charged amino acids side chain.
c. ionic interaction has almost 20 kj/mol of bond energy.
d. ionic interaction is weak interaction that have lowest 20kj/mol of bond energy.
e. strength of ionic bond within protein chain calculated by
 
TLS Online TPP Program

#Question id: 9152

#Unit 9. Diversity of Life Forms

In mountainous areas of western North America, north-facing slopes would be expected to ________.
TLS Online TPP Program

#Question id: 2992

#Unit 2. Cellular Organization

DNA was isolated from three different cell types of the same organism, the relative DNA content for each type was determined, and the results were plotted on the graph shown in the figure below. Refer to the graph to answer the following questions. Which sample of DNA might be from a cell that stopped the process of cell division in G0 phase of the cell cycle prior to meiosis?
TLS Online TPP Program

#Question id: 11278

#Unit 10. Ecological Principles

Which of the following is true with respect to oligotrophic lakes and eutrophic lakes?

A) Oligotrophic lakes are less subject to oxygen depletion.

B) Rates of photosynthesis are lower in eutrophic lakes.

C) Eutrophic lake water contains higher concentrations of nutrients.

D)Sediments in oligotrophic lakes contain larger amounts of decomposable organic matter.
TLS Online TPP Program

#Question id: 26471

#Unit 3. Fundamental Processes

Intrinsic terminators are responsible for prokaryotic transcription termination, so which of the following is the characteristics of Intrinsic terminators
a. It  include palindromic regions 
b. It do not include palindromic regions 
c. Palindromic regions that form hairpins varying in length from 7 to 20 bp
d. The stem-loop structure includes a G-C–rich region and is followed by a run of 7U residues.