The figure shows the evolution of HIV and SIV. Choose the true statements about the evolution of HIV (Select all that apply).
_____ All strains of HIV are included within clades with SIV strains.
_____ A strain of HIV is never more closely related to another strain of HIV than it is to a SIV strain.
_____ Humans acquired different subtypes of HIV from different primate hosts.
_____ HIV-1 group O is more closely related to SIV-chimpanzee than SIV-gorilla.
_____ All strains of SIV are included within clades with HIV strains.
__X__ All strains of HIV are included within clades with SIV strains.
__X__ A strain of HIV is never more closely related to another strain of HIV than it is to a SIV strain.
__X__ Humans acquired different subtypes of HIV from different primate hosts.
_____ HIV-1 group O is more closely related to SIV-chimpanzee than SIV-gorilla.
_____ All strains of SIV are included within clades with HIV strains.
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How do guard cells differ from other epidermal
cells?
a. guard cells do not have a waxy cuticle b. guard cells are more than one cell thick c. guard cells are photosynthetic d. guard cells are only found on the upper epidermal surface of a leaf e. all of these are differences between guard cells and other epidermal cells
Which is not specifically targeted for destruction by the proteasome?
A. oxidized proteins B. phosphorylated proteins C. misfolded proteins D. damaged proteins E. short-lived, regulatory proteins
A(n) _______ can be defined as a disease affecting a large number of individuals in a short period of time on a global scale.
a) emerging infectious disease b) antibiotic-resistant infection c) pandemic d) epidemic
Diseases can be transmitted
a. by inanimate vehicles. b. by living vectors. c. person to person. d. by inanimate vectors. e. by a, b, and c.