TLS Online TPP Program

#Question id: 12609


Which of the following is an example of an ecosystem?

#Unit 10. Ecological Principles
  1. All of the brook trout in a 500 hectare2 river drainage system.
  2. The plants, animals, and decomposers that inhabit an alpine meadow. 
  3. A pond and all of the plant and animal species that live in it.
  4. Interactions between all of the organisms and their physical environment in a tropical rain forest.
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TLS Online TPP Program

#Question id: 2991

#Unit 2. Cellular Organization

Early observations of a cultured cell line indicated that the cells did not exhibit either density-dependent inhibition or anchorage dependence. What do these observations suggest about this cell line?

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: 2993

#Unit 2. Cellular Organization

During meiosis, a defect occurs in a cell that results in the failure of spindle microtubules binding at the kinetochores. Which of the following statements describes the most likely result of such a defect?

TLS Online TPP Program

#Question id: 2994

#Unit 2. Cellular Organization

If a cell has completed meiosis I and the first cytokinesis, and is just beginning meiosis II, which of the following is an appropriate description of its genetic contents?

TLS Online TPP Program

#Question id: 2995

#Unit 2. Cellular Organization

 Which of the following incorrect pair?

TLS Online TPP Program

#Question id: 2996

#Unit 2. Cellular Organization

Cell death approximately equal to cell division is found in