Which types of eukaryotic cells have cell walls composed of cellulose?
A. Fungi
B. Protozoa
C. Plants
D. Algae
E. Both algae and plants
Answer: E
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The thin delicate membrane just attached to the cytoplasm
a. Ectoplasm b. Endoplasm c. Tonoplast d. Protoplasm
Phage-encoded proteins are
A. coded for by host DNA. B. coded for by phage DNA. C. proteins normally present in the uninfected cell. D. early proteins. E. coded for by phage DNA AND early proteins.
As a child, you received the OPV vaccine and its boosters. Now you are going on a mission trip to Pakistan, and the vaccine is recommended by the Centers for Disease Control and Prevention. When you go to the health office for the vaccine, they give you the IPV vaccine. When you ask why you are receiving the IPV rather than the OPV, the personnel explain that
A. IPV is used as a booster only, and OPV is used exclusively for children's first immunization. B. the IPV has fewer active viruses in it than the OPV, so it is safer. C. the IPV is preferred by patients because it can be taken orally. D. there is no possibility of actually developing polio from this vaccine.
The International Union for Conservation of Nature and Natural Resources (IUCN) reports that of the 48,677 species
they have assessed, ____ percent were threatened or endangered. a. 8 b. 18 c. 27 d. 36 e. 65