Lesson 1: Cell theory history

Question 1

Cell analogies

Answer 1

-CPU (central processing unit)
-Family (each has role and function)

Question 2

Cells are not discovered until the _________ was invented

Answer 2

Microscope

Question 3

The first microscope is called_____ and it is invented by ________ and ____«<

Answer 3

-crude microscope
-robert hooke and Jan swammerdam

Question 4

Features of a crude microscope
Magnification range ______
Objective focal length ________
Eyefocal length ________

Answer 4

20 X - 30 X
1.5 cm
5 cm

Question 5

Parts of a crude microscope

Answer 5

Stage- positioning screw
focusing control
specimen pin
single lens

Question 6

Cell theory: history
1) curator of instruments (microscope) for royal society in London
2) what year did the start of microscope making yields
3) specimen he observed
4) described the observation as _____/______ or _____
5) coined it as _____ from the latin word ______ meaning _____

Answer 6

1) Robert Hooke
2) 1665
3) thin slice of cork
4) room/ cell or honeycomb
5) cell, cellula, little rooms

Question 7

A scottish botanist who observed a plant cell and observed a ______ structure and named it _____ from the latin term ______

Answer 7

-Robert Brown
-rounded structure
-nucleus
-kernel

Question 8

In the year ____ Brown’s colleague ____________ a botanist conclude that “__________________” and “_____________________”

Answer 8

1838
Matthias Schleiden
all plant tissues are composed of cells
an embryonic plant always arise from a single cell

Question 9

In ____ a German cytologist ________ focused on animal tissues
-he discredited the early speculations that _____________
-why did the scientitst speculate this?

Answer 9

-1839, Theodor Schwann
-plants and animals do not resemble the same structure of cell
-due to the observable outline in plant cell which makes them distinct as they have cell wall which is lacking in animal cell

Question 10

In the year ______ he examined animal _____ also known as _____
he observed that they have well-defined and thick deposits of _______
function of collagen fibers ____________

Answer 10

-1839, cartilage, chondrocytes
-collagen fibers
-gives outline to the cartilage cells

Question 11

Theodor schwann developed
-it was first developed in the mid _______ unit the years of ____-____

Answer 11

-single unified theory of cellular organization
-1800’s to 1838-1839

Question 12

First two principles of cell theory in _____ are
1.
2.

Answer 12

1839
1) all organisms are consists of one or more cells
2) cell is the basic unit of life

Question 13

after ____ years the third principle was added by a German physiologist named _______
-he concluded the third principle from his predecessor _____
-Upon observing the nuclei described he observed _____
in the year _____ he conclusded that “_______________” from the observation of _____ and ______

Answer 13

• 20 years, Rudolf Virchow
• Karl Nageli
• cell division
  -1855, all cells arise from the division of other cell, Brown and Nageli

Question 14

Virchow concluded that
“_________________________”
from the latin phrase “_______________________”

Answer 14

all cells arise from pre-existing cells
-omnis cellular e cellula

Question 15

Three early cell theory
Three additional concepts in Modern cell theory

Answer 15

1. All organism are made up of one or more cells
2. The cell is the fundamental unit of life
3. All cells came from pre-existing cells
4. All cells have the same basic chemical composition
5. All cells use energy
6. All cells contain duplicated DNA which is passed on each as cell divides.