A detailed analysis that tracks several generations of a family history is a ____
a. carrier chart
b. pedigree
c. syndrome chart
d. genetic chart
e. karyotype
ANSWER: b
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Choose the true statements about the human and chimpanzee genomes.
_____ A comparison of genomes confirms that humans and chimpanzees are closely related species. _____ Very few mutations differentiating the two genomes occur in coding DNA. _____ Some insertion-deletions (indels) lead to loss of function changes in the two genomes. _____ More similarity exists between the genomes of human and mouse than between human and chimpanzee. _____ The estimated genome sizes and number of genes is very different in humans and chimpanzees.
Substrate activation may involve
A) a change in enzyme conformation induced by substrate binding. B) accepting protons from the enzyme. C) formation of temporary covalent bonds. D) donation of protons to the enzyme. E) all of the above
In plants, wilting of leaves and stems results from ____
a. hemolysis b. an increase in turgor pressure c. plasmolysis d. a lack of solutes in the cell e. a higher than normal concentration of water in the cell
Which of the following is true of radiometric dating?
A) A mineral that is 10,000 years old would best be dated with radioactive potassium. B) A mineral that is 1 billion years old would best be dated with radioactive carbon. C) Radioactive potassium-to-radon gas ratio can be used to date minerals. D) One can infer the age of a fossil by radiometric dating of the minerals found near the fossil. E) Carbon-14 decays with a half-life of 60,000 years.