biology

Question 1

why is it called a simple microscope

Answer 1

it is a microscope that has one lense

Question 2

what was leeuwenhoeks microscope mainly used for

Answer 2

mainly bacteria, yeast and other microscopic organisms

Question 3

what were leeuwenhoeks drawings of his discovery’s called

Answer 3

animalcules

Question 4

what did leeuwenhoek invent?

Answer 4

the simple microscope

Question 5

how much lenses does the compound microscope use

Answer 5

it has two lenses

Question 6

what do the two lenses do on the compound microscope do

Answer 6

one enlarges the object and the other magnifies it

Question 7

how much lenses did Robert Hooke’s microscope have

Answer 7

it used a three lens system

Question 8

robert hooke coined the term?

Answer 8

cells

Question 9

how did a light microscope work

Answer 9

the light passes through the the object then the lenses magnifies

Question 10

how high can a light microscope magnify

Answer 10

1000 times

Question 11

how does an electron microscope work

Question 12

how high can a electron microscope magnify biological materials

Answer 12

100 000 times

Question 13

how high can a electron microscope magnify non biological materials

Answer 13

1 000 000 times (1 mil)

Question 14

how does a scanning electron microscope work

Answer 14

electrons bounce off the object

Question 15

what can a scanning electron microscope see

Answer 15

three dimensional pictures

Question 16

how must object be in order to work with the scanning electron microscope

Answer 16

must be very thin

Question 17

how high can a scanning electron microscope magnify up to

Answer 17

300 000

Question 18

how does a transmission microscope work

Answer 18

a beam of electrons is transmitted through the object

Question 19

how must objects be in order to work with the transmission electron microscope

Answer 19

must be very thin

Question 20

how high can a transmission microscope magnify up to

Answer 20

up to 1 500 000 (1.5 mil)

Question 21

how is total magnification calculated

Answer 21

ocular lens( magnifying power of the objective lens)

Question 22

what is the field of diameter/ field of view

Answer 22

the area that can be seen when looking through the lens of a microscope

Question 23

how does the field of view decrease

Answer 23

it decreases as you increase the magnification

Question 24

the field of view is usually calculated in

Answer 24

micrometers

Question 25

1000um =?

Answer 25

= 1 mm

Question 26

how do yuou convert from um -> mm?

Answer 26

divided by 1000

Question 27

how to convert from mm -> um

Answer 27

times 1000

Question 28

how is the size of an object calculated?

Answer 28

FOV divided by FIT

Question 29

contrast is the difference between the____ and ____?

Answer 29

backroad and object

Question 30

contrast is the ability to see_________ between ________

Answer 30

differences between structures

Question 31

what does contrast do to objects?

Answer 31

it makes invisible structures visible

Question 32

resolution is the ability to distinguish between_____ structures that are very____ together

Answer 32

two structures that are very close together

Question 33

resolution is also called?

Answer 33

resolving power

Question 34

low power objective ____mm

Answer 34

4mm

Question 35

medium power objective ____mm

Answer 35

1.6mm

Question 36

high power objective ____mm

Answer 36

0.4mm

Question 37

size=

Answer 37

= field over fit number

Question 38

what is the first cell theory?

Answer 38

that all living things are made up of one or more cells and the materials produced by these cells

Question 39

what is the second cell theory?

Answer 39

all life functions take place in cells, making them the smallest unit of life

Question 40

what is the third cell theory?

Answer 40

all cells are produced from pre existing cells through the process of cell division

Question 41

cells are open systems carry out what of life processes?

Answer 41

intake of nutrients, movement, growth, response to stimuli, exchange of gasses and waste removal

Question 42

what organisms are cells?

Answer 42

multicellular organisms

Question 43

how is specialization accomplished by?

Answer 43

by turning off parts of the cells DNA

Question 44

name all of the organelles in animal cell

Answer 44

nuroplansm, nucleaus, nucleartpore, smoother, cutoplasm, rough er, ribosome, cell wall, vacule, midocondria, chloroplast, golgi apparatus and lysomes

Question 45

what is the cell membrane

Answer 45

a protective barrier for the cell

Question 46

what does the nucleus do

Answer 46

contains DNA, and controlls all celular activities

Question 47

what is the fluid in the nucleus called

Answer 47

the nucleoplasm

Question 48

what is the DNA in the nucleus called?

Answer 48

cromatin

Question 49

what does chromatin condense into

Answer 49

chromosomes

Question 50

what is the cytoplasm

Answer 50

a gel like substance inside the cell membrane

Question 51

organelles are____ in the cytoplasm

Answer 51

suspended

Question 52

what is the movement of molecules and organelles in the cell

Answer 52

cytoplasmic streaming

Question 53

where are chloroplasts found

Answer 53

only in plant cells

Question 54

what is the formula for photosynthesis

Answer 54

6co2+ 6H2O->c6H12O6+602

Question 55

what is the endoplasmic reticulum

Answer 55

small tubes that are involved with transport

Question 56

what does the endoplasmic reticulum act like

Answer 56

like highways or roads

Question 57

what does ribosomes do

Answer 57

granules attached to the endoplasmic reticulum and assemble acids into proteins

Question 58

what does the endoplasmic reticulum look like

Answer 58

looks like dots on a road

Question 59

what are lysomes

Answer 59

a membrane bound sac where digestion can occur

Question 60

what is the Golgi apparatus do

Answer 60

packages up substances and transports them

Question 61

what is the mitochondria reffered to as

Answer 61

the powerhouse

Question 62

what does the mitochondria do

Answer 62

converts energy in sugars into cells through cell division

Question 63

what is cellular respiration the opposite of

Answer 63

photosynthesis