Ultrastructure and Functions

Question 1

Is the basic Structural and functional unit of living organisms.
In other words, it make up living things and carry out activities that keep a living thing alive.

Answer 1

Cell

Question 2

Is a collection of ideas and conclusions from many different scientists over time that describes cells and how cells operate.

Answer 2

Cell theory

Question 3

Cell theory

Answer 3

1. All known living things are made up of one or more cells.
2. All living cells arise from pre-existing cells by division
3. The cell is the basic unit of structure and function in all living organisms.

Question 4

1665: Discovered cell

Answer 4

Robert Hooke

Question 5

1674: Observed living cell

Answer 5

Anton Van Leeuwenhoek

Question 6

1883: Discovered nucleus

Answer 6

Robert Brown

Question 7

1835: Discovered fluid content of cell

Answer 7

Felix Dujardin

Question 8

1838: Proposed all plants are made up of cells

Answer 8

Matthias Schleiden

Question 9

1839: Named fluid content of cell as protoplasm

Answer 9

J. E. Purkinje

Question 10

1839: Proposed all animals are made up of cells

Answer 10

Theodor Schwann

Question 11

1845: Proposed cell is the basic unit of life

Answer 11

Carl Heinrich Braun

Question 12

1855: Proposed all cells arise from pre-existing cells

Answer 12

Rudolf Virchow

Question 13

An organism that is made up of only one cell is called as
unicellular organism.

Answer 13

Unicellular Organisms

Question 14

An organism that is made up of more than one cell is called as
multicellular organism.

Answer 14

Multicellular Organisms

Question 15

Example of Unicellular Organisms

Answer 15

Euglena, Paramecium
and Yeast

Question 16

Example of Multicellular Organisms

Answer 16

Plants, Animals and Fungus

Question 17

what is the smallest cell
and give its size

Answer 17

Mycoplasma
Size: 0.1 µm

Question 18

The unit used to measure size of a cell .

Answer 18

micrometer
1 µm = 1/1000 millimeter

Question 19

what is the largest cell and give its size

Answer 19

Ostrich egg
Size: 18 cm

Question 20

what is the smallest cell in humans and give its size

Answer 20

Sperm cell
Size: 5 µm

Question 21

what is the largest cell in humans and give its size

Answer 21

Ovum cell
Size: 120 µm

Question 22

what is the longest cell in humans and give its size

Answer 22

Nerve cell
Size: 1 m

Question 23

Shape of cells: Human RBCs are ________for easy passage through human capillaries.

Answer 23

circular biconcave

Question 24

Shape of cells: Nerve cells are _______ to conduct impulses from one point to another.

Answer 24

branched

Question 25

Shape of cells: Human WBCs can ________ to engulf the microorganisms that enter the body.

Answer 25

change their shape

Question 26

The structure of a cell as seen under an electron microscope is called ________.

Answer 26

ultrastructure

Question 27

The detailed structure of a cell has been studied under _______ and _________ microscope.

Answer 27

compound microscope and electron microscope.

Question 28

Magnification of Compound microscope

Answer 28

Magnification 2000X

Question 29

Magnification of Electron microscope

Answer 29

Magnification 500000X

Question 30

Name the parts of animal cell

Answer 30

Nucleus Golgi body Vesicle Plasma membrane Mitochondria Cytoskeleton Centriole Lysosome Cytoplasm Rough endoplasmic reticulum Smooth endoplasmic reticulum Nucleolus

Question 31

Name the parts of plant cell

Answer 31

Nucleus Golgi body Vesicle Lysosome Plasma membrane Mitochondria Chloroplast Cell wall Vacuole Smooth endoplasmic reticulum Rough endoplasmic reticulum Nucleolus

Question 32

Name the parts of Bacterial Cell

Answer 32

Capsule Cell wall Plasma membrane Cytoplasm Flagellum Food granule Plasmid (DNA) Ribosomes Nucleoid Pili