Chemistry

Question 1

how many different elements from periodic table of elements comprise the human body

Answer 1

25

Question 2

top left # on element char is the

Answer 2

atomic #

Question 3

bottom # on element chart

Answer 3

atomic mass/ number of protons

Question 4

how do you find the number of neutrons in an element

Answer 4

subtract atomic number from atomic mass

Question 5

t/f atoms have the same number of protons as electrons

Answer 5

true

Question 6

protons have a Positive charge

Answer 6

true

Question 7

electrons have a negative charge

Answer 7

true

Question 8

the first ring of an atom holds how many protons

Answer 8

2

Question 9

2nd ring of atom holds how many protons

Answer 9

8

Question 10

Id the 5 phases of the nuclear cycle IPMAT

Answer 10

interphase, prophase, metaphase,anaphase,telephase

Question 11

mitosis is when the cell is dividing

Answer 11

true during PMAT phases

Question 12

define ionic bond

Answer 12

2 atoms transfer electrons in outer shell

Question 13

covalent bonds

Answer 13

shares electrons

Question 14

when the small positive charge from one molecule attracts a negative charge of another molecule this bond is called

Answer 14

hydrogen bond ( weakest type of bond)

Question 15

order of strength of types of bonds

Answer 15

covalent (because atoms outer layers are full) ionic (transferring electrons to achieve stability, two electrically attracted atoms) and hydrogen ( attracted molecules)

Question 16

organic compounds the building blocks are called monomers and finished products called polymers t/f

Answer 16

true

Question 17

monosaccharaides (simple sugars) are known as

Answer 17

glucose

Question 18

multiple glucose turns monosaccharaides into

Answer 18

polysaccharides

Question 19

fatty acids build up into

Answer 19

lipids/fats

Question 20

amino acids build into

Answer 20

protein

Question 21

nucleotides build into

Answer 21

nucleic acid

Question 22

sugars (carbs) 1g= how many calories?

Answer 22

4

Question 23

enzymes are proteins that make things happen….

Answer 23

faster

Question 24

multiple glucose stores as

Answer 24

glycogen

Question 25

1000 or more glucose makes

Answer 25

glycogen

Question 26

starch is ____ or more glucose linked together (found in plants)

Answer 26

1000

Question 27

cellulose is also called____ and cannot be broken down by the human body.

Answer 27

fiber

Question 28

a simple vs a complex carb is determined by…..

Answer 28

rate at which sugar is broken down and enters the blood stream

Question 29

the higher the fiber content the more complex the carb is

Answer 29

true

Question 30

fatty acids are aka..

Answer 30

monomers

Question 31

lipids are aka..

Answer 31

polymers

Question 32

triglycerides are 3 monomers and provide the body with..

Answer 32

energy, insulation and cushion for organs

Question 33

another type of fat is known as steroids name 3 examples

Answer 33

cholesterol, sex hormones (testosterone, estrogen) and phospholipids

Question 34

phospholipids are found in tissue in the

Answer 34

phospholipid bi-layer

Question 35

unsaturated fat is

Answer 35

good

Question 36

saturated fat is bad because it has too much hydrogen

Answer 36

true. also trans, hydrogenated.

Question 37

protein is 50 or more______ linked togther

Answer 37

amino acids

Question 38

how many different types of amino acids are there?

Answer 38

20

Question 39

how many different types of cells are there

Answer 39

200

Question 40

name and define the unit used to measure cell size

Answer 40

micrometers 1= one-millionth of a meter or 1/25,000th of an inch

Question 41

list the 3 basic principals of cell theory

Answer 41

cells are the building blocks of all life,produced by divisions from pre-existing cells, smallest living units