TLS Online TPP Program

#Question id: 18729


Which of the following is not a function of DNA topoisomerase?

#Unit 13. Methods in Biology
  1. Removing turns of the double helix DNA
  2. Adding turns to the double helix DNA
  3. Have nuclease and ligase activity
  4. Have polymerase activity
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TLS Online TPP Program

#Question id: 2913

#Unit 2. Cellular Organization

Genome size (the length of DNA associated with one haploid complement of chromosomes) varies substantially between different organisms. Because more genes are required to direct the formation of more complex organisms, it is not surprising that genome size is roughly correlated with an organism’s apparent complexity. Which of the following statements is/are correct in reference to this rough correlation?

I. Many organisms of apparently similar complexities have very different genome sizes.

II. The number of genes, rather than genome size, is more closely related to organism complexity.

III. There is a roughly inverse correlation between organism complexity and gene density—the less complex the organism, the higher the gene density.

IV. Gene density in eukaryotic organisms is consistently higher and more variable than in their prokaryotic counterparts.

TLS Online TPP Program

#Question id: 10208

#Unit 6. System Physiology – Plant

The large amounts of energy absorbed by the pigments if this energy cannot be stored by photochemistry, this is why a protection mechanism is needed Protection against photodamage is a multilevel process what role does the first line of defense play to suppress from damage?

TLS Online TPP Program

#Question id: 33981

#Unit 2. Cellular Organization

The scaffold-associated regions are separated by loops of DNA. The scaffold itself may contain several proteins such as
A. Topoisomerase
B. SMCs
C. RNA Polymerase

TLS Online TPP Program

#Question id: 2313

#Unit 2. Cellular Organization

In which of the following cells would you expect to find the most mitochondria?

TLS Online TPP Program

#Question id: 9274

#Unit 6. System Physiology – Plant

The different types of carotenoids found in photosynthetic organisms, the all carotenoids are