Which of the following statements about rhinoviruses is FALSE?
A. They are limited to infecting the upper respiratory tract.
B. They are the only viruses that can cause a common cold.
C. They are extremely infectious.
D. They thrive at 33°C.
E. Person-to-person contact is the most common mode of transmission.
Answer: B
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The last common ancestor of fungi, mammals, and archaea likely had which of the following characteristics?
A. both a plasma membrane and a circular chromosome B. both a circular chromosome and membrane-bound organelles C. both free-floating genetic material (DNA) and a distinct nucleus D. both membrane-bound organelles and a circular chromosome E. both a distinct nucleus and a plasma membrane
Male crickets create sounds that we call "chirps" by rubbing one wing against the other. Female parasitic flies are attracted to the chirps and lay their eggs on the male once they locate him. Is this an example of communication?
A. Yes, because one individual produced information. B. No, because multiple individuals received information. C. Yes, because information from the sender altered the receiver's behavior. D. No, because the exchange of information resulted in a cost to the sender. E. Yes, because the exchange of information resulted in a benefit to the receiver.
Multicellular fungi grow as branching filaments called ____
a. mycorrhizae b. conidia c. asci d. hyphae e. basidia
The protein-coding gene sequences in humans and chimpanzees
A. are identical. B. are vastly different. C. are more than 99% alike. D. are about 50% alike. E. are about 80% alike.