Which part of the cell membrane helps in cell-cell signaling?
a. Unsaturated fatty acids
b. Carbohydrates
c. Cholesterol
d. Proteins
e. Lipids
d. Proteins
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In both lichens and mycorrhizae, what does the fungal partner provide to its photosynthetic partner?
A) carbohydrates B) fixed nitrogen C) antibiotics D) water and minerals E) protection from harmful ultraviolet light
At term, ____________________ changes initiate and drive the events surrounding birth
Fill in the blank(s) with correct word
Scientific names
a. are always written in all capital letters and in italics. b. are always written in italics in lower case. c. are always written in lower case and underlined. d. are always written in italics with both genus and species capitalized. e. are always written in italics with only the genus capitalized.
Which biome has a closed canopy?
a. tundra b. taiga c. tropical rain forest d. desert e. grassland