TLS Online TPP Program

#Question id: 10616


In a study of tree dispersion in a forest, we divided the forest into 1 sq km grid cells, choose 50 of them at random, and counted the number of trees in each cell. The means to variance ratio of the counts of trees per cell was much less than 1. What does this tell us about the spatial distribution of the trees?

#Unit 10. Ecological Principles
  1. Randomly dispersed 
  2. highly aggregated
  3. Uniformly dispersed
  4. more information is needed
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TLS Online TPP Program

#Question id: 31341

#Unit 3. Fundamental Processes

LoxP‐Cre system can be used to generate 

TLS Online TPP Program

#Question id: 9595

#Unit 6. System Physiology – Plant

The process is that the absorbed photon causes an electron rearrangement in the reaction centre chlorophyll, followed by an electron transfer process in which part of the energy in the photon is captured in the form of

TLS Online TPP Program

#Question id: 15752

#Unit 12. Applied Biology

Match the following

Column I Column II
I. Auxin                     a. Somatic embryogenesis
II. Cytokinin              b. Root
III. GA3                      c. Continued growth
IV. Abscisic acid      d. Shoot

TLS Online TPP Program

#Question id: 19740

#Unit 3. Fundamental Processes

Choose the correct statement
a) Telomeric RNA component is encoded by TLC1 in yeast, and hTERC in humans
b) Telomeric RNA component is encoded by hTERC in yeast, and TLC1 in humans
c) Telomerase protein component with catalytic activity is encoded by EST2 in yeast, hTERT in humans
d) Telomerase protein component with catalytic activity is encoded by hTERT in yeast, EST2 in humans

TLS Online TPP Program

#Question id: 11762

#Unit 9. Diversity of Life Forms

Typically as cells grow, their increase in volume outpaces their increase in surface area, and continued survival requires undergoing asexual reproduction to reestablish a healthy surface area to volume ratio. Thus, which of these is least likely to contribute to the ability of a single-celled foraminiferan to grow to a diameter of several centimeters?