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TLS Online TPP Program

#Question id: 345

As the [H3O+] of the solution decreases, the [OH-] ________.

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. increases and thus pH increases

  2. increases and thus pH decreases

  3. decreases and thus the pH decreases

  4. decreases and thus the pH increases

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TLS Online TPP Program

#Question id: 18578

#Unit 7. System Physiology – Animal

During which stage of the general adaptation syndrome (GAS) is the risk for physiological harm, such as reduced immunity and increased susceptibility to physical or mental illness, greatest?
TLS Online TPP Program

#Question id: 5691

#Unit 8. Inheritance Biology

Which of the following most accurately explains the cause for the abnormal numbers of chromosomes during human reproduction that can result in Down syndrome, Turner’s syndrome, or Klinefelter’s syndrome?
TLS Online TPP Program

#Question id: 3406

#Unit 11. Evolution and Behavior

If 50 Invidual migrate from population A (allelic frequency P= .70 and q = .30  to population B with density 950 individual and allelic frequency  p=.40 q= .60. What is allelic frequency of P allele of population B after migration?
TLS Online TPP Program

#Question id: 23696

#Unit 13. Methods in Biology

which of the following best describes the complete sequence of steps occurring during every cycle of PCR?
1. The primers hybridize to the target DNA.
2. The mixture is heated to a high temperature to denature the double stranded target DNA.
3. Fresh DNA polymerase is added.
4. DNA polymerase extends the primers to make a copy of the target DNA.
TLS Online TPP Program

#Question id: 2656

#Unit 2. Cellular Organization

In a cell as per the Operon Concept, the regulator gene governs the chemical reactions by