Arrange the steps in RNA splicing in order from earliest to latest
A) exon ends are covalently joined together
B) components of the spliceosome bind conserved regions in the intron and bring them together in close proximity
C) acceptor splice site is cut.
D) donor splice site is cut and the end of the intron is joined covalently to the branch site
Answer: B, D, C, A
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What type of test affixes an antigen to an inert particle such as a latex bead?
A. Cross-reactions B. Agglutination C. Precipitation D. Specificity E. Sensitivity
Answer the following statements true (T) or false (F)
1. The word meristem is derived from a Greek word meaning to divide. 2. The root zone of maturation is immediately above the root apical meristem (RAM). 3. The root hairs develop in the zone of elongation. 4. The direction in which a plant cell expands depends on the arrangement of cellulose microfibrils in its cell wall.
Mating types in fungi are generally termed
a. sperm and eggs. b. ? and ?. c. male and female. d. plus and minus. e. Fungi do not have specific mating types.
You wish to confirm that gene X is associated with the F plasmid of your bacterial strain. To accomplish this using bacterial conjugation, you should conjugate your strain with a compatible bacterial strain that is
A) an Hfr strain. B) another F+ strain. C) an F' strain. D) an F? strain. E) the same F+ strain.