Question

Very short-answer questions
1. What is a cell?
2. Write one word to describe the nature of the
cell membrane.
3. What is the cell wall in plant cells made of and
what is its function?
4. What is the function of chloroplast in a plant
cell?
5. What is the basic difference between prokaryotes
and eukaryotes?​

Answer 1

Answer:

1.)Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. ... Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.

2.)The cell membrane is also called the plasma membrane. ... It is selectively permeable and regulates the movement of molecules in and out of the cell.

3.)The main functions of the cell wall are to provide structure, support, and protection for the cell. The cell wall in plants is composed mainly of cellulose and contains three layers in many plants. The three layers are the middle lamella, primary cell wall, and secondary cell wall.

4.)In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves; and vacuoles allow plant cells to change size.

5.)The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not.

Answer 2

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Que 1)What is a cell?

ans. Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body’s hereditary material and can make copies of themselves.

Que 2)Write one word to describe the nature of the

cell membrane.?

ans. The cell membrane is also called the plasma membrane. ... It is selectively permeable and regulates the movement of molecules in and out of the cell.

Que3)What is the cell wall in plant cells made of and

what is its function?

ans.. cell wall:- It is the thick and rigid structure with a fixed shape.

functions:- A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.

Que4)What is the function of chloroplast in a plant

cell?

ans.A chloroplast is a type of plastid (a saclike organelle with a double membrane) that serves as the site of photosynthesis, the process by which energy from the Sun is converted into chemical energy for growth. Chloroplasts contain the pigment chlorophyll to absorb light energy.

Que5)What is the basic difference between prokaryotes

and eukaryotes?

ans

• prokaryote:-

a microscopic single-celled organism which has neither a distinct nucleus with a membrane nor other specialized organelles, including the bacteria and cyanobacteria

• eukaryotes:-

an organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus. Eukaryotes include all living organisms other than the eubacteria and archaea.