cells

Question 1

who invented the microscope and what year

Answer 1

robert hooke 1665

Question 2

why isi t that’s light microscopes are limited to what they allow us to see

Answer 2

due to the wavelength of the light

Question 3

electron beams have …….. wavelength than beams of light so allow more detail

Answer 3

a much shorter t

Question 4

what are the structures that can be seen with a light microscope

Answer 4

dnA , plasma membrane, ribosomes and cytoplasm

Question 5

what do eukaryotic cells contain

Answer 5

organelles

Question 6

what are organelles

Answer 6

structures in cells with specialised functions

Question 7

what is the function of the plasma membrane

Answer 7

• it protects the cell from its surroundings
• regulates the movement of substances in and out of the cell

Question 8

what does the rER (rough endoplasmic reticulum do )

Answer 8

proteins are made here

Question 9

structure of rough endoplasmic reticulum

Answer 9

a series of single flattened sacs which is enclosed by the membrane
has ribosomes on the surface

Question 10

structure of the smooth endoplasmic reticulum

Answer 10

series of single tubular sacs made of membrane

Question 11

function of sER

Answer 11

lipids are made here

Question 12

what does sER mean

Answer 12

smooth endoplasmic reticulum

Question 13

what does rER stand for

Answer 13

rough endoplasmic reticulum

Question 14

what is the function of the nucleolus

Answer 14

makes ribosomes and is the region of dense dna and protein

Question 15

what is a vesicle

Answer 15

a small membrane bound sac

Question 16

function of a vesicle

Answer 16

it transports and stores substances in the cell

Question 17

nucleus

Answer 17

is surrounded by a double membrane (an envelope) and has pores(holes) in the nuclear envelope

Question 18

the function of the centrioles

Answer 18

makes the spindle in cell division

Question 19

structure of the centrioles

Answer 19

2 hollow cylinders that are arranged at right angles to each other

Question 20

what is the function of lysosomes

Answer 20

destroys old organelles and pathogens

Question 21

structure of lysosome

Answer 21

enclosed by a single membrane
containing digestive enzymes

Question 22

function of golgi apparatus

Answer 22

modifies proteins and packages them in vesicles for transport

Question 23

structures of golgi apparatus

Answer 23

series of single curved sacs enclosed by a membrane
many vesicles cluster around the golgi apparatus

Question 24

eukaryotic 80s ribosomes

Answer 24

site of protein synthesis

Question 25

structure of the mitochondria

Answer 25

surrounded by a double membrane the inner membrane is folded into a finger like projections called cristae

Question 26

what does mitochondrion contain

Answer 26

70s robisomes, dna

Question 27

function of mitochondrion

Answer 27

site of respiration

Question 28

function of cytoplasm

Answer 28

site of many metabolic processes

Question 29

structure of cytoplasm

Answer 29

fluid that fills a cell, many molecules are dissolved in solution