The process of removing introns from mRNA and putting the remaining exons together occurs in a complex called the ____.
a. ribosome
b. anticodon
c. lariat
d. polysome
e. spliceosome
E
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The test tubes in the photograph contain Benedict’s solution and two unknown substances that have been heated. What do the results indicate for each substance?
What will be an ideal response?
In the axoneme, sidearms
A) are incomplete microtubules. B) slide microtubules past one another. C) project inward at each doublet. D) link adjacent doublets. E) are complete microtubules.
The Z lines in skeletal muscle are composed of ____
a. discs to which thin filaments are anchored b. stacked thick filaments along with the parts of thin filaments that overlap both ends c. thin filaments but no thick filaments d. thick filaments but no thin filaments e. stacked thin filaments along with parts of thick filaments that overlap both ends
Marine biologists tagged and released 50 marlin. Later, fishermen caught 300 marlin, 15 of which had
tags. What is the estimate for the number of marlin in the population?
a. 5,000 b. 315 c. 365 d. 2,500 e. 1,000