Every protein is assembled on ____ according to instructions that are copied from ____
a. mRNAs; tRNAs
b. tRNAs; mRNAs
c. ribosomes; mRNA
d. tRNAs; DNA
e. ribosomes; DNA
E
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Which system is an internal system of regulation and communication involving hormones, glands, and target cells?
What will be an ideal response?
In which of the following biomes would you expect to find the highest abundance of large, grazing mammals?
A) tropical rain forest B) chaparral C) temperate grassland D) desert E) temperate forest
A research project you are doing looks at different protein-encoding genes in the human genome. What are some of the main classes of genes that you will find? (Select all that apply.)A) clusters of two or more distinct genes known as multigene familiesB) transposons that move within or between chromosomesC) single-copy genes that exist once on the genomeD) simple sequence repeatsE) tandem clusters used to increase levels of specific mRNAs
What will be an ideal response?
Which of the following would NOT be true of cDNA produced using human brain tissue as the starting material?
A) It could be amplified by the polymerase chain reaction. B) It could be used to create a complete genomic library. C) It was produced from mRNA using reverse transcriptase. D) It could be used as a probe to detect genes expressed in the brain. E) It lacks the introns of the human genes.