Which is true regarding genomes of Archaea?
a. Archaeal genomes are generally larger than those of Bacteria.
b. Unlike Bacteria, Archaea do not show a strong correlation between genome size and ORF content.
c. Archaea have fewer genes for carbohydrate metabolism, transport, and membrane biosynthesis.
d. Archaea have fewer genes for energy and coenzyme production.
Answer: C
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In RNAi, imperfect pairing of miRNA to target mRNA results in ____ while perfect pairing of miRNA to target
mRNA causes ____.
a. blocking transcription of the target mRNA; mRNA degradation b. blocking translation of the target mRNA; mRNA degradation c. recruitment of siRNA; blocking translation of the target mRNA d. mRNA degradation; recruitment of siRNA e. blocking transcription of the target mRNA; blocking translation of the target mRNA
Paired chromosomes in a cell in which members of the pair have genes for the same traits are called
A) Alleles B) Synapsis C) Sister chromatids D) Homologous chromosomes E) Centrioles
Which of the following structures is the last to develop?
a. neural tube b. neural groove c. neural crest d. neural folds e. neural plate
Which behavioral response to the threat of predation is most likely to be selected for in a species that uses camouflage for protection from predators?
A) Behavior that mimics the behavior of the predator B) A quick escape response C) Sudden display to startle the predator D) Motionless behavior E) Cooperative behavior