unit 3

Question 1

who was the first person to see dead cells?

Answer 1

Robert Hooke

Question 1

who was the first person to see living cells?

Answer 1

Anton von Leeuwenhoek

Question 2

who thought plants are made up of cells?

Answer 2

Matthias Schleiden

Question 3

who thought animals were made up of cells and then concluded that all organisms were made up of cells?

Answer 3

Theodor Schowann

Question 4

who thought that all cells come from other cells?

Answer 4

Rudolph Virchow

Question 5

what is the old cell theory?

Answer 5

1. all living things are made of cells
2. cells are the basic units of living things
3. new cells come from pre-existing cells

Question 6

true or false: as technologies advanced and new discoveries were made about cells, the cell theory has been modified.

Answer 6

true

Question 7

what is the modern cell theory?

Answer 7

1. all living things are made of cells
2. cells are the basic units of organisms
3. new cells come from pre-existing cells
4. energy flows within cells
5. cells contain hereditary information (DNA) that is passed on from cell to cell during cell division
6. cells of similar species have the same chemical compositions

Question 8

what are some new technologies and discoveries allowed for additions to The Cell Theory?

Answer 8

1. biochemical studies
2. electron microscopes
3. DNA structure and technologies

Question 9

define cell diversity.

Answer 9

cell diversity are different types of cells form different tissues, which perform different jobs in the body.

Question 10

red blood cells–

Answer 10

are round and flexible to fit through the round blood vessels

Question 11

muscle cells–

Answer 11

are long and thin to move bones

Question 12

neurons–

Answer 12

are nervous cells

Question 13

fat cells–

Answer 13

provide energy storage

Question 14

the shape of the cell is related to the job (________) of the cell

Answer 14

the missing word is function.

Question 15

organelles–

Answer 15

cell structures inside cells that specific structures and functions in the cell.

Question 16

what are the organelles cellular boundaries and support?

Answer 16

cell wall, plasma or cell membrane, cytoplasm, and cytoskeleton

Question 17

what type of cells have a cell wall?

Answer 17

plants, bacteria, fungus, and protists

Question 18

what is the job of the cell wall?

Answer 18

supports, gives structure and protects cells

Question 19

what types of cells have a cell membrane or plasma membrane?

Answer 19

all of them

Question 20

what is the job of the cell membrane or plasma membrane?

Answer 20

it control what goes in and out of the cell and is semipermeable; some materials can cross and others cannot

Question 21

what types of cells have cytoplasm in them?

Answer 21

all of them

Question 22

what is the job of cytoplasm?

Answer 22

it fills the cell and supports cell processes, has a cytoskeleton that gives the cell its shape, chemical reactions occur, and substances move around in it

Question 23

what is cytoplasm made of?

Answer 23

its a jelly-like substance containing mostly water

Question 24

what types of cells have cytoskeleton in them?

Answer 24

all of them

Question 25

what is the cytoskeleton made of?

Answer 25

proteins

Question 26

the cytoskeleton is complex in which types of cells?

Answer 26

animal and plant

Question 27

what is the job of the cytoskeleton?

Answer 27

it helps the movement of vesicles, supports cell division, maintains the cell shape

Question 28

which oraganelles are for cellular boundaries and support?

Answer 28

cell wall, plasma or cell membrane, cytoplasm, and cytoskeleton

Question 29

which organelle are for cellular control?

Answer 29

nucleus, DNA (chromosomes), nucleolus, nuclear membrane (envelope)

Question 30

All cells have what…..

Answer 30

DNA, Cytoplasm, ribosomes, and cell membrane