multiple choice

Question 1

Which compound would you expect to find in greater amoiunts in the cell membrane eof a fish that lived in very cold watter versus a fish that lived in warmer water

Answer 1

cholesterol

Question 2

if a cell has a higher concentration of salt outside of the cell than inside what will happen

Answer 2

water will move out of the cell and the cell will shrink

Question 3

in what type of inhibation does the inhibitor bind to an enzyme at a site other than the active site

Answer 3

noncompetitive inhibation

Question 4

according to the induced fit model how does an enzyme accommodate its substrate

Answer 4

the enzyme changes its shape

Question 5

what statement about startch is true about its linkages

Answer 5

its a chain of alpha glucose molecules joined by a1-4 glydocidic bonds.

Question 6

the four major types of chemical reactions that are common in. biological processes are

Answer 6

dehydration, synthesis, hydrolysis, neutralization

Question 7

what statement best describes a radioisotope

Answer 7

an isotope that is unstable and breaks down into smaller atoms releasing energy

Question 8

which is the most stable part of the cytoskeleton

Answer 8

intermidiate filaments

Question 9

what happens to a strong acid in solution

Answer 9

it completly ionizes in solution to produce many H ions

Question 10

Why are 8 out of 20 amino acids considered to be essential for humans

Answer 10

they can be obtained only in the foods we eat

Question 11

what organelle is associated with the production of ribosomes

Answer 11

nucleous

Question 12

which factor will increase with the fluidity of lipid bilayers

Answer 12

increasing the length of the fatty acids

Question 13

Which structure is a part of the endomembrane system

Answer 13

nucleous

Question 14

what is the forces of attraction between hydrocarbon

Answer 14

London dispersion

Question 15

What type of molecule contaains the hydroxyl functional group

Answer 15

nucleic acids

Question 16

what is the function of ribosomes

Answer 16

ribosomes translate RNA into polypeptide chains

Question 17

what is an example of purine

Answer 17

adenine guanine

Question 18

what is denaturation

Answer 18

may occur due to excess hydronium ions

Question 19

what are the charecteristics of a hydrogen bond

Answer 19

they are weker then covalent, responsible for the suraface tension properties of water, they are responsible for relativley high boiling point of water

Question 20

what is a prosthetic group

Answer 20

a non protien group that binds to a polypeptide to make it into a functional protien

Question 21

increasing the distace between molecules results in what change to the intermolecular force

Answer 21

decrease

Question 22

which 2 monosachrides make up sucrose

Answer 22

glucose and fructose

Question 23

how does cellulose link

Answer 23

B1,4 gydocidic bonds

Question 24

omega 3 or omega 6 is the term that refers to which type of molecule

Answer 24

fatty acid

Question 25

compared to saturated fats unsaturated fars contain less...

Answer 25

hydrogen

Question 26

which molecules contain nitrogen

Answer 26

chitin

Question 27

what is a charecteristic about functional groups

Answer 27

they influence the physical properties of the molecule

Question 28

the function of glycogen is to

Answer 28

keep glucose available for humans

Question 29

what fatty acids do solid fats such as butter and lard contain

Answer 29

saturated fatty acids

Question 30

what are protiens polymers of

Answer 30

amino acid monomers

Question 31

a molecule such as a amino acid that has one end that can donate a hydrogen ion and one end can accept is known as a

Answer 31

amphiprotic

Question 32

which carbon has a different molecule attatchment depeneing on weather it is ribose sugar or deoxyribose

Answer 32

2

Question 33

compared to saturated fats unsaturated fats contain less,,,

Answer 33

hydrogen

Question 33

what substances are always produced in a neutralization reaction

Answer 33

water and salt

Question 33

in term maintaining the shape of a molecule the strongest binds involve

Answer 33

covalent

Question 34

what type of biomolecule is gycerol found in

Answer 34

lipids

Question 35

what functional grouos are acidic

Answer 35

carboxyl, phosphate

Question 36

what monosachrides make up lactose

Answer 36

galactose b glucose

Question 37

waxes contain what functional group

Answer 37

ester

Question 38

sulfhydryl group is most simalar to a

Answer 38

hydroxyl

Question 39

cholesterol is an example of what type of lipid

Answer 39

sterol

Question 40

the function of cellulose is

Answer 40

build structural cell walls in plants

Question 41

which organelle attatches to protiens

Answer 41

golgi body

Question 42

what role does the mitochondria play in the cell

Answer 42

cellular respiration

Question 43

what type of plastid is colorless and contains startch

Answer 43

amyloplast

Question 44

which statement about plastids is correct

Answer 44

chloroplasts are a common type of plastid in eukaryotic plant cells

Question 45

which part of plant cells contains microfillaments

Answer 45

cytoskeleton

Question 46

which part of plant cell contains microfilaments

Answer 46

cytoskeleton

Question 47

subunits of ribosomes are assembled in

Answer 47

nucleous

Question 48

endomembrane system includes the

Answer 48

plasma membrane, nucleous, er, vesciles, and golgibodies

Question 49

the enzyme catalyste are found in the ____ and used to convert hydrogen peroxide into water and oxegyn

Answer 49

peroxisomes

Question 50

once and polypeptides chains are assembles they enter the ___ and are put into final form

Answer 50

rough ER

Question 51

ECM is composed largely of ______ in animals

Answer 51

crabohydrates and protiens

Question 52

besides the nucleous which organells contain DNA

Answer 52

chloroplasts and mitochodria

Question 53

what is the purpose of cell junction

Answer 53

allow for chemical communication between cells and or the enviorment

Question 54

if a chemical a cell wall was exposed to destroyed , its smooth ER would result in

Answer 54

inactivation of toxins

Question 55

flagella is made of

Answer 55

microtubles

Question 56

what is the nuclear envelope

Answer 56

made up of 2 bilaywers, continous wuth the membrane of the ER, it contains pores that allow water and suspended substances to enter and exit the nucleous

Question 57

which organelle attatches carbphydrates to protiens

Answer 57

golgibody

Question 58

which organelle does not have a membarane

Answer 58

ribosome

Question 59

what are the function of ribosomes

Answer 59

translate RNA into polypeptide chains

Question 60

what is the extracellular matrix is a mix of _____ that suppourts the cell

Answer 60

protiens and carbs

Question 61

what is negative ffedback inhibition

Answer 61

a product acts as an allosteric inhibitor of an early enzyme in metabolic pathway

Question 62

glucose storage polysachride in animals

Answer 62

glycogen

Question 63

what are examples of pyrimidines

Answer 63

thymine, cytosine and uracial

Question 64

which organelles found in all cells

Answer 64

plasma membrane

Question 65

the key point of oxidization is that it is a prosess in which

Answer 65

there is a loss of elctrons