Which biome has the greatest number of distinct layers of vegetation?
a. savanna
b. tropical rain forest
c. desert
d. chaparral
e. grassland
b
Biology & Microbiology
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The first cells on Earth gained energy from ________
a. methane and hydrogen sulfide b. photosynthesis using a C3 pathway c. consuming other cells d. absorbing short-wave UV radiation from sunlight
Biology & Microbiology
In basidiomycetes the ________ is diploid.
A. zygote B. primary mycelium C. secondary mycelium D. basidium
Biology & Microbiology
Which of the following represents the amount of DNA in a typical G2 cell?
a. n b. 2n c. 4n d. 8n
Biology & Microbiology
Solutions that contain concentrations of H+ ions lower than pure water
a) have pH values below 7 b) are acids c) are bases d) are enzymes
Biology & Microbiology