Study Biology

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Microbiology

Study Pack

Set 4 Archaea

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Question 1

(Multiple Choice)

Free
In which of these aspects do Archaea DIFFER from Eukarya?

A)Histones associated with DNA.
B)The transcription process.
C)The translation process.
D)The replication process.
E)Being haploid in chromosome number while Eukarya are diploid.

Answer

Question 2

(Multiple Choice)

Free
The length of DNA spooled around a histone complex is determined by digesting DNA bound to histones with a DNA endonuclease which forms breaks at unbound DNA sequences,releasing fragments whose size and number reveal the spooled length and overall DNA fragment length.Digestion of an archaeal DNA fragment generated twelve DNA segments.How long was the original DNA?

A)around 300 bp
B)around 500 bp
C)around 800 bp
D)around 5000 bp
E)around 10,000 bp

Answer

Question 3

(Multiple Choice)

Free
Which of these is one of the main functions of the cytoplasmic membrane in Archaea?

A)It protects against effects of differing osmotic pressure
B)It gives the cell its characteristic shapes
C)It acts as a semi permeable barrier to the diffusion of molecules into and out of the cell.
D)It prevents the diffusion of gases into and out of the cell.
E)It allows attachment to specific receptor molecules on solid surfaces in the environment.

Answer