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Cell Nucleus and Chromosomes

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Questions and Answers

Which type of organisms lack a nuclear membrane in their cells?

Eukaryotes

Chloroplasts

Viruses

Prokaryotes (correct)

What is the main difference in cell structure between prokaryotes and eukaryotes?

Lack of ribosomes

Absence of plasma membrane

Presence of chlorophyll

Presence of nuclear membrane (correct)

Which organelle is associated with membranous vesicles in photosynthetic prokaryotic bacteria?

Cell wall

Chlorophyll (correct)

Plastids

Ribosomes

What is the fluid content inside the plasma membrane called?

Cytoplasm Signup and view all the answers

What characteristic do viruses lack that prevents them from showing characteristics of life until they enter a living body?

Membranes Signup and view all the answers

What is the primary function of the nuclear membrane?

To allow the transfer of materials between the nucleus and cytoplasm through its pores Signup and view all the answers

What is the composition of chromosomes?

Chromosomes are composed of DNA and protein Signup and view all the answers

What is the role of genes in a cell?

Genes contain the information necessary for constructing and organizing cells Signup and view all the answers

What is the difference between chromatin material and chromosomes?

Chromatin material is found in non-dividing cells, while chromosomes are found in dividing cells Signup and view all the answers

What is a nucleoid, and in which organisms is it found?

A nucleoid is an undefined nuclear region containing only nucleic acids, found in bacteria Signup and view all the answers