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TLS Online TPP Program

#Question id: 4943

In what way were conditions on the early Earth of more than 3 billion years ago different from those on todayʹs Earth?

#Unit 11. Evolution and Behavior

  1. only early Earth had water vapor in its atmosphere.

  2. Only early Earth was intensely bombarded by large space debris.

  3. Only early Earth had an oxidizing atmosphere.

  4. Less ultraviolet radiation penetrated Earthʹs early atmosphere.

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TLS Online TPP Program

#Question id: 16786

#Unit 13. Methods in Biology

What is the median of 7.1, 3.2, 5.8, 8.9, 6.5, 10.2, 9, 12.5 
TLS Online TPP Program

#Question id: 2136

#Unit 2. Cellular Organization

When a bacterium such as E. coli is shifted from a warmer growth temperature to a cooler growth temperature, it compensates by:
TLS Online TPP Program

#Question id: 437

#Unit 1. Molecules and their Interaction Relevant to Biology

Which thermodynamic quantity is used to determine if a reaction in a cell is spontaneous?
TLS Online TPP Program

#Question id: 7116

#Unit 5. Developmental Biology

Which one statement best describes gastrulation in sea urchins?

a) Gastrulation is initiated by invagination of the micromeres at the vegetal pole.

b) The mouth of the pluteus larva will form from mesomeres on the oral side of the 60-cell embryo.

c) The gut will form from the macromeres at the 16-cell stage.

d) Mesenchymal cells originating at the vegetal pole will invaginate first during gastrulation and will form skeletal structures in the pluteus larva.

Which of the following combination is correct?
TLS Online TPP Program

#Question id: 12381

#Unit 7. System Physiology – Animal

 A person with normal body fluid volumes weighs 60 kg and has an extracellular fluid volume of approximately 12.8 L, a blood volume of 4.3 L, and a hematocrit of 0.4; 57% of his body weight is water.
What is the approximate plasma volume?