Question

★what is cell membrane made up of?
★ How many parts in neclues? Explain the function of the parts.
★What is
chromosome what's its function?
★Give two similarity between bacteria and virus and two differences aslo.
★ WHO discovered living cell at the first time?
1. Robert Hooke
2. Leeuwenhoke

Answer 1

$\huge\sf\pink{\underline{Answer}}$

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⚫️What is cell membrane made up of ?

✔️It is made up of phospholipids (phosphate + water).

It also consists of proteins and glycoproteins.

⚫️How many parts nucleus consist of ? Explain it functions ?

✔️It consist of five parts

The parts and its function are listed below-

✌️Nuclear membrane✌

It plays an important role in trransport of material from cytoplasm to the nucleus

✌Nuclear pores✌

The materials exchanged between nucleus and cytoplasm must traverse the nuclear pore complexes

✌Nucleoplasm✌

It is nucleus sap that contains DNA, RNA, proteins, enymes etc

✌Nucleolus✌

It helps in mitosis, exchange of genetic material and protein synthesis.

✌Endosomes✌

They are like nucleolus but smaller in size, showing changeable structure.

⚫️What is chromosome? What is its function?

✔️Chromosome is a filamentous bodies present in nucleus composed of genes

✌Function✌

It consist of genes that is unit of inheritance.Due,to chromosomes, the parental character is passed from parents to offsprings

⚫️Give two similarity between bacteria and virus and two difference also

✔️✌Differences✌

One difference between the two is that bacteria contain ribosomes and viruses do not. Another difference is that bacteria can reproduce in many different places while viruses need a living cell to reproduce.

✌Similarities✌

Both bacteria and viruses require a microscope to be seen, and bacteria and viruses can both cause disease.

⚫WHO discovered living cell at the first time?

✔️Robert Hooke..

Answer 2

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✏ What is cell membrane made up of ?

→ All living cells are made up of tiny organelles. Cell membrane is composed mainly of phospholipids and proteins.

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✏ How many parts does nucleus have? Explain their function?

→ The nucleus has 4 different parts.

$\huge\star{Nucleur \: Membrane}$ : Nucleus has double layered covering called membrane. It has numerous minute pores. These pores allow the transfer of materials from inside the nucleus of the cytoplasm.

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$\huge\star{Nucleolus}$: It is sperical in shape. It is first recognised by Fontana. It plays a vital role in making proteins in the cell.

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$\huge\star{Nucleoplasm}$: It is made up of nucleic acid, proteins, enzymes, lipids etc. It serves as a suspension for the organelles inside the nucleus.

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$\huge\star{Chromatin}$: This helps in division of cells.

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✏ What is chromosome? What is its function?

⭐ Chromosomes contain information for inheritance of features from parents to next generation in the form of DNA. Chromosomes are composed of DNA and proteins. Functional segment of DNA are called genes.

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✏ Similarities between bacteria and virus. And also their differences?

$\huge \mathfrak{Similarities}$

⭐ Both bacteria and virus require microscope to be seen, they are not visible to our naked eye.

⭐ They both cause diseases.

$\huge \mathfrak{Differences}$

⭐ Bacteria contains ribosomes and virus does not.

⭐ Bacteria can reproduces without any cell. Virus requires a living cell to reproduce.

⭐ Antibiotics will get rid of bacterial infections. And viral infection cannot be cured by antibiotics.

⭐ There is a huge difference in size.

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✏ Who discovered living cell?

→ Robert Hook discovered the living cell [ 1665 ]. He observed cells in slice of cork with the help of compound microscope.

→ Leeuwenhook discovered free living cell in the pond of water with improved microscope.

Hence the answer is $Robert \: Hook$