ch 3 test

Question 1

what is the latin saying thing and its translation

Answer 1

omnes cellula e cellula
all cells come from cells

Question 2

6 parts of cell theory (3 original and 3 modern)

Answer 2

1) all living things are made of cells
2) cell is the fundamental unit of structure and function for living things
3)cells arise from pre-existing cells
4) energy flow occurs in cells
5) hereditary information is passed from cell to cell
5) all cells have the same basic chemical composition

Question 3

2 types of cells

Answer 3

prokaryote
-no nucleus
-no separate membrane bound organelles

eukaryote
-DNA is in nucleus
-membrane bound organelles

Question 4

robert hooke vs. Leeuwonhoek discoveries

Answer 4

hooke
-observed dead cork cells
-coined the term ‘cell’

Leeuwonhoek
-made a more powerful microscope
-observed living cells and called them ‘animalcules’

Question 5

Dutrochet and Dumortier

Answer 5

Dutrochet
-declared cells as the fundemental unit and structure of life

Dumortier
-cells come from cells (division of pre existing cells)
-cell division accounts for growth of entire organism

Question 6

schlieden and Schwann

Answer 6

-worked togeather and said all living things are made of cells
-believed in spontaneous generation

Question 7

robert remark and Rudolph virchow

Answer 7

Remark
- did not believe in spontaneou generation, published works against it

Virchow
-coined a long list of terms and popularized Remark’s work

Question 8

ribosomes

Answer 8

-on RER and in cytoplasm
-have no membrane
-made of RNA and proteins
-site of protein synthesis

Question 9

Golgi Apparatus

Answer 9

-stacks of separate membranes -modify packages and send out packages of proteins

Question 10

Central Vacuole

Answer 10

-only in plants
-holds water
-provides structure and rigidity for plant cells by exerting pressure against the cell wall

Question 11

active vs, passive transport

Answer 11

Active
-needs energy ATP
-moves against the concentration gradient (from low to high)
-3 types: primary, secondary, bulk

passive
-no energy needed
-moves with concentration gradient(high to low)
-(not osmosis)equalizes concentration, volume stays the same, solvant and salute move
-3 types: simple diffusion, ficilitated diffusion, osmosis

Question 12

contrast

Answer 12

using a dye to add differance in color to a specimine to see things more clearly

Question 13

4 biomolecules

Answer 13

carbohydrates, lipids, proteins, nucleic acids