After transcription and before translation, eukaryotic mRNA is modified by adding
A) tRNAs and amino acids.
B) amino acids and a poly-A tail.
C) a cap of modified nucleotides and a poly-A tail.
D) an AUG at one end and a poly-U tail at the other.
C) a cap of modified nucleotides and a poly-A tail.
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Affinity maturation is one of the factors responsible for a stronger secondary immune response
Indicate whether the statement is true or false.
Suppose you discover a mutant plant that cannot actively transport solutes across the tonoplast. Which
of the following should you expect?
a. The plant will wilt easily. b. The plant will generally be like a normal plant. c. The plant will not have leaves. d. The plant will not have roots. e. The plant cells will not be able to divide.
Which respiratory disease is caused by a bacterial infection?
A. the common cold B. asthma C. lung cancer D. tuberculosis E. cystic fibrosis
Mature human sperm cells
A. are spermatozoa. B. are secondary spermatocytes. C. are oocytes. D. are primary oocytes. E. undergo meiosis.