Four of the following statements about fossils found on the island of Flores are true. Which one is the exception?
a. They are shorter than modern humans.
b. They have very small brains.
c. They are 200,000 years old.
d. They have a heavy brow ridge.
e. They are small.
ANSWER: c
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In the alveoli
A. oxygen diffuses into the blood while carbon dioxide diffuses out of the blood. B. oxygen diffuses out of the blood while carbon dioxide diffuses into the blood. C. both oxygen and carbon dioxide diffuse out of the blood. D. both oxygen and carbon dioxide diffuse into the blood. E. no exchange with the blood occurs.
A homologous chromosome pair is best described as two chromosomes having ____
a. the same genes in the same order but possibly having different alleles of those genes b. the same alleles of the same genes in the same order c. the same alleles of the same genes in a different order d. different alleles of the same genes arranged in a different order e. identical DNA sequences
Statocysts contain cells that are _____
A) mechanoreceptors used to detect orientation relative to gravity B) chemoreceptors used in selecting migration routes C) photoreceptors used in setting biological rhythms D) thermoreceptors used in prey detection
Information on mRNA is used to make a sequence of amino acids into a protein by which of the following processes?
A. replication B. translation C. transcription D. transference