Nucleus, Mitochondria, Chloroplasts: Cell components with double membranes

Nucleolus was discovered by Felice Fontana. Nucleus was discovered by Robert Brown. 

Fungi possess cell walls made of the glucosamine polymer 'chitin'. It is a polymer of nitrogen-containing polysaccharide rendering a tough protective covering or structural support in certain organisms.

Golgi bodies are often called as dictyosomes.

Cristae are the folded structures that are formed by the in-foldings of inner mitochondrial membrane.

Both the statements are correct about cell wall. Cell wall is made of a complex carbohydrate called cellulose. It is hard and rigid.

The thread-like structures present in the nucleus are collectively called chromatin.

Chloroplasts contain grana, which are minute particles consisting of a pile of thin double platelets, containing chlorophylls and carotenoids associated with photosynthesis.

Organisms like bacteria that lack a well-defined nuclear region are called prokaryotes.

Vacuoles store various materials like starch, amino acids, water, nitrogenous waste, etc.

Vacuoles are covered by tonoplast and they store water, food material and waste products in a cell.

Golgi apparatus is composed of stacks of membrane-bound structures known as cisternae. It helps in the storage, packaging and transport of materials synthesised in the endopolasmic reticulum. It also forms the acrosome of a sperm.

Endoplasmic reticulum serves as a channel for transport of materials between various regions of cytoplasm.

The dark spot-like structure that helps in making ribosomes is called nucleolus and it is present in the nucleus.

It is the structure in the chromosome which gives it shapes like I, V, L, etc.

They are associated with mitochondria and take part in aerobic respiration.

It states that a lipid bilayer has some embedded proteins and some proteins on the surface.

Both b and c are correct. b is incorrect. 

This is the correct answer as all the statements given above are correct. Chromoplasts are coloured plastids. Leucoplasts are colourless plastids. Leucoplasts are involved in the formation and storage of starch and oil drops.

 Correct answer is given below. Mitochondria : Powerhouse of cell Ribosomes : Site for protein synthesis Chloroplasts : Site for photosynthesis Lysosomes : Suicidal bags of cell

Lysosomes carry hydrolytic enzymes.

Bacteria and blue-green algae belong to the group 'prokaryotes'.

Animal cells do not have plastids and cell wall. Similarly, plant cells do not have centrosomes. Thus, option (2) is the only correct match.

Cell was discovered by Robert Hooke in 1665 under a simple magnifying device from a thin slice of cork. These were dead cells.