Question

select all that apply
select all components of the archaeal cell that would be found in the nucleoid.
□ ribosomes
□ chromosomal dna
□ proteins
□ plasma membrane
□ diether lipids

Explanation:

1. Ribosomes: Ribosomes are involved in protein synthesis and are found in the cytoplasm (or associated with other structures), not in the nucleoid. So this is incorrect.
2. Chromosomal DNA: The nucleoid in archaeal cells (and prokaryotes generally) is the region that contains the circular chromosomal DNA. So chromosomal DNA is a component of the nucleoid. This is correct.
3. Proteins: Proteins (like nucleoid - associated proteins) are present in the nucleoid to help organize and compact the chromosomal DNA. So proteins are components of the nucleoid. This is correct.
4. Plasma membrane: The plasma membrane is the outer (or inner, in some cases) membrane of the cell, surrounding the cytoplasm. It is not part of the nucleoid. This is incorrect.
5. Diether lipids: Diether lipids are components of the archaeal plasma membrane (or other membranes), not the nucleoid. This is incorrect.

Answer:

B. chromosomal DNA, C. proteins