TLS Online TPP Program

#Question id: 447


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 spontaneously to the right?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Under standard conditions, enough energy is released to drive the reaction to the right.

  2. The reaction will not go to the right spontaneously under any conditions because the DG'° is positive.

  3. The reaction will proceed spontaneously to the right if there is a high concentration of products relative to the concentration of fructose 1,6-bisphosphate.

  4. The reaction will proceed spontaneously to the right if 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: 4763

#Unit 8. Inheritance Biology

in a rare blood type referred to as the bombay phenotype, individuals are unable to attach the a or b antigens to their red blood cells. individuals that are homozygous recessive for gene "h" have the bombay phenotype and their blood type is type "o" regardless of their abo genotype. this is an example of what extension of mendelian inheritance?

TLS Online TPP Program

#Question id: 4764

#Unit 8. Inheritance Biology

Which of the following is the best example of overdominance?

TLS Online TPP Program

#Question id: 4765

#Unit 8. Inheritance Biology

The recessive mutant allele that causes cystic fibrosis is much more frequent in Caucasians population than in other world populations. Some scientists believe heterozygotes must have had a survival advantage during plagues such as cholera that occasionally swept through this population. What concept does this illustrate?

TLS Online TPP Program

#Question id: 4766

#Unit 8. Inheritance Biology

In soybeans, resistance to sudden death syndrome (SDS) is inherited as a dominant condition. In some cases, individuals that are not resistant to SDS (but whose parents were) can pass the trait on to their progeny. This is an example of which of the following?

TLS Online TPP Program

#Question id: 4767

#Unit 8. Inheritance Biology

Neurofibromatosis is a condition in humans which is generally inherited in a dominant fashion. Assuming this disorder is 90% penetrant, what is the chance that a single child born to a father with neurofibromatosis and a mother known not to carry the mutation will have the disorder?

TLS Online TPP Program

#Question id: 4768

#Unit 8. Inheritance Biology

A trait that appears to be dominant in one sex but recessive in the other is called: