Practice Questions

TLS Online TPP Program

#Question id: 532

In glycolysis, fructose 1,6-bisphosphate is converted to two products with a standard free-energy change (DG'°) of 23.8 kJ/mol. Under what conditions (encountered in a normal cell) will the free-energy change (DG) be negative, enabling the reaction to proceed to the right?

#Unit 1. Molecules and their Interaction Relevant to Biology

If the concentrations of the two products are high relative to that of fructose 1,6-bisphosphate.
The reaction will not go to the right spontaneously under any conditions because the DG'° is positive.
Under standard conditions, enough energy is released to drive the reaction to the right.
When there is a high concentration of fructose 1,6-bisphosphate relative to the concentration of products.

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TLS Online TPP Program

#Question id: 2285

#Unit 2. Cellular Organization

Assuming all other factors to be the same, electron microscopes have greater resolving power than light microscopes because.

TLS Online TPP Program

#Question id: 4945

#Unit 11. Evolution and Behavior

Which is a defining characteristic that all protobionts had in common?

TLS Online TPP Program

#Question id: 28437

#Unit 5. Developmental Biology

Primitive groove is homologous to_____

TLS Online TPP Program

#Question id: 12058

#Unit 7. System Physiology – Animal

A 45-year-old man presents with abdominal pain and hematemesis. An abdominal exam was relatively benign, and abdominal x-rays were suggestive of a perforated viscus. Endoscopy revealed a chronically perforated gastric ulcer, through which the liver was visible. Which of the following is a forerunner to gastric ulcer formation?

TLS Online TPP Program

#Question id: 23697

#Unit 13. Methods in Biology

A researcher needs to clone a sequence of part of a eukaryotic genome in order to express the sequence and to modify the polypeptide product. She would be able to satisfy these requirements by using which of the following vectors?