The basic living unit of all living organisms is called:
a. tissue.
b. germ plasma.
c. cells.
d. organs.
e. DNA.
C
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snoRNPs are found in the nucleolus. Two functions of these complexes include:
A. rRNA processing. B. tRNA processing. C. adding methyl groups to rRNA. D. adding methyl groups to tRNA. E. transcription of 5S rRNA.
The fruiting body of members of the Basidiomycota can produce millions of ________.
A. zygotes B. gametes C. rhizoids D. spores
What did Darwin find in South America that suggested that the Andes mountains had been gradually lifted up over millions of years?
a. marine snail fossils high up in the Andes mountains b. bird fossils at the top of mountains in Argentina c. dinosaur bones in the Amazon basin d. impressions of ocean waves at the top of a mountain
In trees, such as the horse chestnut, the abscission of leaves and fruits in the fall is mediated by ____.
A. abscisic acid B. auxin C. ethylene D. cytokinin E. gibberellin