Lecture 1

Question 1

What is an organism

Answer 1

an assembly of molecules functioning as a stable whole that exhibits life

Question 2

Describe the cell theory

Answer 2

1. All organisms are composed of one or more cells
2. The cell is the basic structural and functional unit of all living organisms
3. Cells arise only from the division of preexisting cells

Question 3

What did antonie van leeuwenhoek

Answer 3

one of the first people to observe microorganisms through a microscope of his own design

Question 4

What did Robert hooke do

Answer 4

the first to use a microscope to observe living things; The “cell” was first discovered by him in 1665

Question 5

Magnification

Answer 5

is the ratio of the object’s image size to its real size

Question 6

Resolution

Answer 6

is a measure of the clarity of the images; it is the minimum distance that two points in the specimen can be separated and still be seen as two points

Question 7

What structures do all cells have in common

Answer 7

Plasma membrane, dna, ribosome,cytoplasm

Question 8

What similarities do cells have

Answer 8

• use energy
  -respond to there environment
  -Pass on hereditary info
  -Most are microscopic

Question 9

Similarities between eukaryotic and prokaryotes

Answer 9

-Plasma membrane
-Cytoplasm
-Ribosomes
-DNA

Question 10

How do unicellular organisms carryout activitys

Answer 10

they carry out all activitys nessasary for life

Question 11

Light microscopes

Answer 11

use light to illuminate specimen
-Reflected light
-Transmitted light
-fluorescence

Question 12

Electron microscopes

Answer 12

use electrons to illuminate the specimen
-Transmission
-Scanning