Current classification of prokaryotes is based on
A. occurrence of transverse binary fission.
B. type of colony formation.
C. ability to stain the cell wall with Gram stain.
D. sequencing of proteins, DNA, and RNA.
E. morphology of flagella.
Answer: D
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Which of the following transposable elements are found in eukaryotes but not in prokaryotes?
A) IS elements B) Families of autonomous and nonautonomous elements C) Retrotransposons D) Ty elements E) B, C, and D only
Of the following choices, which has the elastic recoil of its walls during diastole, causing a continuation of blood flow throughout the cardiac cycle?
A) artery B) venule C) vein D) capillary E) arteriole
Why is a male more likely than a female to seek treatment for chlamydia and gonorrhea?
What will be an ideal response?
The genetic code
A) contains sense codons and nonsense codons. B) uses a quartet code to encode the codons. C) relies on codons made up of DNA. D) has 60 codons. E) encodes for 18 amino acids.