Question

8. Cell is the structural and functional unit of life. The word cell is derived from
which means "a little room". Can you name the scientist who coined the ter
(a) Robert Hooke
(b)
Anton Von Leeus
(c) Robert Brown
Ernst Haeckel
2. The proteins and lipids, essential for building the cell membrane, are manut
(a) Endoplasmic reticulum
(b)
Golgi apparatus
(c) Mitochondria​

Answer 1

Answer:

a) Robert hooke

a) endoplasmic reticulum

Explanation:

HOPE it helps you

Answer 2

Required Answers:

1. ( a ) Robert Hooke

2. ( a ) Endoplasmic reticulum

__________________________

Question:

Cell is the structural and functional unit of life. The word cell is derived from which means "a little room". Can you name the scientist who coined the term.

• (a) Robert Hooke

• (b) Anton Van Leeuwenhoek

• (c) Robert Brown

• (d) Ernst Haeckel

Answer:

• (a) Robert Hooke was the first one who discovered cell ( dead cell ) and coined the term “a little room”.

Explanation:

In 1665, Robert Hooke looked at a slice of cork through a microscope and he saw that it was appeared to be made of small compartments/rooms which was looked like honeycomb like structures.And termed that small rooms as cell.

__________________________________

Question:

2. The proteins and lipids, essential for building tphe cell membrane, are manufactured in-

• (a) Endoplasmic reticulum

• (b) Golgi apparatus

• (c) Mitochondria

Answer:

• The proteins and lipids, essential for building the cell membrane, are manufactured in endoplasmic reticulum.

Explanation:

☞ Rough endoplasmic reticulum ( RER ) manufacture and synthesis protiens.

☞ Smooth endoplasmic reticulum ( SER ) manufacture and synthesis Lipids.

______________________________

Additional Information:

• In 1665 , Robert Hooke wrote a book "Micrographia" in which he has written about cells.

• Cell is the basic structural and functional unit of life.

• Study of cells is called cytology.

• Cell consists of-

☆ Cell membrane/Plasm membrane

☆ Cell wall [ only in plant cells ]

☆ Cytoplasm

☆ Nucleus

☆ Plastids

☆ Vacuoles

☆ Endoplasmic reticulum

☆ Ribosomes

☆ Mitochondria

☆ Golgi apparatus

☆ Lysosomes

☆ Centrosomes

• On the basis of structure, cells are divided into two types-

☆ Prokaryotic Cells

☆ Eukaryotic cells

• Nucleus was discovered by Robert Brown.

___________________________________