Cell Qiuz Flashcards Preview

7th Grade Science > Cell Qiuz > Flashcards

Flashcards in Cell Qiuz Deck (28):
1

Cells

Basic unit of all living things

2

First scientist to see living cells in Pondwater using microscope

Leowenhoek

3

Flexible bilayer boundary of the cell of phospholipid molecules with protein molecules embedded in it

Plasma membrane

4

Made of glycerol, two Fatty acid chains in phosphate group

Phospholipid

5

Uses energy from food to make high-energy compounds

Mitochondria

6

Modifies sorts and packages proteins that come from the endoplasmic reticulum

Golgi apparatus

7

Maintain cell shape with a network of protein filaments

Cytoskeleton

8

Uses energy from sunlight to make food molecules

Chloroplast

9

Controls most cell processes and contains DNA

Nucleus

10

Sites were lipids for membranes are assembled for membrane, has two types – rough and smooth

Endoplasmic reticulum

11

Site of protein synthesis

Ribsomes

12

Provide support and protection for the cell

Cell wall

13

Having a higher osmotic pressure than a particular fluid, typically a body fluid or a intracellular fluid

Hypertonic

14

Having a lower osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid

Hypotonic

15

A solution having the same osmotic pressure As some other solution especially one in a cell or body fluid

Isotonic

16

Large particles engulfed in and close by cell membrane, moves into the cell

Endocytosis

17

Large particles are released from cell by secreting them

Exocytosis

18

Particles tend to move from an area where they are more concentrated to an area less concentrated

Diffusion

19

Cell theory

1) All living things are made of one or more cells
2) cells are the basic unit of structure and function in living things
3) all cells come from other cells

20

Prokaryotic

Pro-no
No nucleus

21

Eukaryotic

Eu-do
Has nucleus

22

Organs in cells

Organelles

23

What did the invention of the microscope make possible for scientist?

To view and study cells

24

Electron microscope

Allow object to be magnified up to 500,000 times using beam of electrons instead of light

25

Scanning electron microscope (sem)

Can help scientist see a cells three-dimensional shape

26

Transmission electron microscope (tem)

Allows scientists to see structures inside a cell

27

Scanning probe microscope

Produce images by tracing surfaces of cells or structures with the probe

28

First scientist who observed cork was made of tiny cells

Robert Hook