In which of the following kingdoms are mitochondria not present in organisms?
A. Protista
B. Plantae
C. Archaea
D. Animalia
E. Fungi
Answer: C
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These skin cells fight infections: ________
A) fibroblasts B) melanocytes C) macrophages D) neuroglia
Which of the following species do paleoanthropologists believe may be the most direct ancestor to Homo sapiens?
A) Homo neanderthalensis B) Homo ergaster C) Homo habilis D) Homo heidelbergensis E) Homo erectus
Homologous structures are
A. structures of animals that have different appearances and functions but seem to have evolved from the same body part in a common ancestor. B. structures of animals that have the same appearances and functions but obviously no common ancestor. C. structures of animals that have different appearances and functions but different ancestors. D. structures of animals that appear to have evolved from different parts of their bodies.
A news article discussing the evolution of domestic dogs from wolves included this statement: "On its way from pack-hunting carnivore to fireside companion, dogs learned to love—or at least live on—wheat, rice, barley, corn, and potatoes." What is a
more scientifically accurate way to state what happened with dogs? A) Dogs' DNA mutated so that they could eat wheat, rice, barley, corn, and potatoes. B) Some wolves may have had variants in their digestion that allowed them to eat wheat, rice, barley, corn, and potatoes and so were able to survive with humans. C) Being around humans represented an advantage, so wolves were able to take advantage of that by changing their digestion to be able to eat wheat, rice, barley, corn, and potatoes. D) Dogs were created at the same time as wolves.