Which molecule is translated into an amino acid sequence?
A. Transfer RNA
B. Primer RNA
C. Ribosomal RNA
D. Messenger RNA
E. Ribozymes
Answer: D
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Which of the following statements is NOT true about sister chromatids?
A. They are identical DNA sequences. B. They are attached to each other at a region of their DNA sequence called the centromere. C. They are formed in the S phase of the cell cycle when the chromosome undergoes replication. D. They are formed when the prokaryotic circular chromosome attaches at the plasma membrane. E. All of these statements about sister chromatids are false.
Which of the following adaptations is a result of natural selection acting on Plasmodium? a. All of the choices
b. Infected humans are more likely to be bitten by mosquitoes than uninfected people are. c. Infected mosquitoes are more likely to feed several times a night than uninfected mosquitoes are. d. Plasmodium has developed resistance to several antimalarial drugs.
____ are important as food in parts of Asia, and fed to chickens in Brazil
a. Sea squirts b. Salps c. Larvaceans d. Cephalochordates e. Nudibranchs
In the flower diagram shown above, the item labeled "8" is a(n)
a. ovule. b. stigma. c. sepal. d. anther. e. style.