TLS Online TPP Program

#Question id: 2226


What will happen to a red blood cell (RBC), which has an internal ion content of about 0.9%, if it is placed into a beaker of pure water?

#Unit 2. Cellular Organization
  1. The cell would shrink because the water in the beaker is hypotonic relative to the cytoplasm of the RBC.

  2. The cell would shrink because the water in the beaker is hypertonic relative to the cytoplasm of the RBC.

  3. The cell would swell because the water in the beaker is hypotonic relative to the cytoplasm of the RBC.

  4. The cell will remain the same size because the solution outside the cell is isotonic.

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TLS Online TPP Program

#Question id: 3335

#Unit 11. Evolution and Behavior

Consider hypothetical populations that have arisen from the mixing of migrants from different sources: f(AA)- 0.30   f(Aa)- 0.0     f(aa)- 0.70 After one generation of random mating within population, what will be genotypic frequencies?

TLS Online TPP Program

#Question id: 29419

#Unit 6. System Physiology – Plant

The fixation of three molecules of CO2 into one molecule of triose phosphate requires

TLS Online TPP Program

#Question id: 4687

#Unit 3. Fundamental Processes

Multiplicity of infection (moi) is a measure of how many phage particles infect a given bacterial cell within a population?

a) If the average number is one or fewer phage particles per cell, the infection is more likely to result in lysis

b) If the number of phage particles is two or more, it is more likely to produce lysis

c) If the average number is one or fewer phage particles per cell, the infection is more likely to result in lysogney

d) If the number of phage particles is two or more, it is more likely to produce lysogney

which of the following is the correct prediction of moi measurement?

TLS Online TPP Program

#Question id: 18908

#Unit 13. Methods in Biology

pBR 322 has/have which of the following selection marker(s)?

TLS Online TPP Program

#Question id: 28325

#Unit 5. Developmental Biology

The pattern of embryonic cleavage peculiar to a species is determined by two major parameters: 
(1) the amount and distribution of yolk protein within the cytoplasm, which determine where cleavage can occur and the relative sizes of the blastomeres
(2) factors in the egg cytoplasm that influence the angle of the mitotic spindle and the timing of its formation

Which of the following statements is incorrect about patterning of embryonic cleavage?