In the modification of eukaryotic mRNA, ________ cap and ________ tail are usually added to the transcript.

A) an acetylated-guanine; a poly-cytosine
B) a poly-guanine; a methyl group
C) a poly-thymine; an acetyl group
D) a methylated-guanine; a poly-adenine
E) a methylated-adenine; a poly-guanine


D) a methylated-guanine; a poly-adenine

In the modification of eukaryotic mRNA, a methylated-guanine cap and a poly-adenine tail are usually added to the transcript.

Biology & Microbiology

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When a gamete receives the same number of chromosomes as a somatic cell,

a. a reduced gamete is formed and allopolyploidy is present. b. a reduced gamete is formed and autopolyploidy is present. c. an unreduced gamete is formed and allopolyploidy is present. d. an unreduced gamete is formed and autopolyploidy is present. e. an unreduced gamete is formed and allopolyploidy and autopolyploidy are present.

Biology & Microbiology

The minimum age of the LUCA (last unique common ancestor) is the age of the oldest fossils that can be identified with certainty as close relatives of present-day prokaryotes and eukaryotes. Such fossils are about ________

A) 3.8 billion years old B) 2 billion years old C) 542 million years old D) 3.28 billion years old E) 65 million years old

Biology & Microbiology

Which of the following Excavata members have hydrogenosomes?

A. Euglenozoa B. Fornicata C. Trichomonadida D. Trichonymphida

Biology & Microbiology

Although actinomycetes vary in many ways, they all share a common type of cell wall.

Answer the following statement true (T) or false (F)

Biology & Microbiology