Prokaryotic Cells and Viruses

Question 1

What is the typical structure of a prokaryotic cell?

Answer 1

-Singular loop of DNA, unassociated with any proteins
-No membrane bound organelles
-No chloroplasts
-Smaller ribosomes
-Cell wall made of muerin
-May contain an outer layer called a capsule
-May contain plasmids (Smaller circles of DNA)

Question 2

What are the key differences between prokaryotic and eukaryotic cells?

Answer 2

PROKARYOTC VS EUKARYOTIC
-No nucleus v Nucleus
-DNA not associated with proteins V DNA associated with proteins called histones
-DNA may be in plasmid form V No plasmids; DNA is linear
-No membrane bound organelles V Membrane bound organelles
-No chloroplasts V Chloroplasts present in plants and algae
-Small ribosomes V Large ribosomes
-Murein cell wall V Cell wall is mostly cellulose (Chitin in fungi)
-Potential capsule V No capsule

Question 3

What is the structure of the Virus?

Answer 3

-Acellular, non-living particles
-Contain nucleic acids such as DNA or RNA, but can only multiply inside living cells
-Enclosed in protein coat called a capsid
-Attachment proteins allow virus to identify and attach to a host cell