Now that the human genome has been sequenced, we know that there are fewer than expected protein
coding genes (approximately 20,000). Yet, the total number of proteins produced in humans
approaches 100,000. What accounts for this discrepancy in numbers?
a. We have not yet identified all of the open reading frames in the human genome.
b. We have not yet fully sequenced the human genome.
c. The various mechanisms of mRNA processing lead to more proteins being produced than
the DNA directly encodes.
d. Some proteins are converted into completely new proteins after translation.
e. There has been a gross over-estimation of the number of proteins produced in humans.
C
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Amal has a serious metabolic disorder known as PKU. His sister has the same disorder. Neither of
Amal’s parents have the disorder. What is the most likely inheritance pattern of this disorder? A. Autosomal dominant B. Autosomal recessive C. X-linked dominant D. X-linked recessive E. It is not possible to tell the inheritance pattern from this information.
Artificial hearts are used routinely today to replace damaged hearts when a donor heart is not available for transplant
Indicate whether the statement is true or false
It appears that the most important senses involved in human sexual attraction are
A. hearing and touch. B. sight and smell. C. taste and smell. D. touch and smell.
Your cells most readily obtain energy from
A. C6H12O6. B. Glyceraldehyde-3-phosphate. C. ATP. D. NADH2.