True or false

Question 1

lysomes are involves in protien synthesis

Answer 1

false

Question 2

nucleic acids consist of nucleotides linked together with ionic bonds

Answer 2

false

Question 3

cyanide is reversible inhibitor that binds cytochrome oxidase

Answer 3

false

Question 4

bases generally have a low PH

Answer 4

false

Question 5

all protiens are an assemblhy of varius combinations of 20 amino acids

Answer 5

true

Question 6

competitive inhibition is where an enzymatic reaction is regulated by the product of the reaction

Answer 6

false

Question 7

water diffuses from an area of high solute concentration to an area of low water concentration

Answer 7

false

Question 8

an insomer is a molecule wuth the same formula, but different arrangement of atoms

Answer 8

false

Question 9

an example of neutralization would be HCL+ NaOH -> NaCl +H2O

Answer 9

true

Question 10

the enzyme catalse found in vacuoles is used to convert hydrogen peroxide into water and oxegyn

Answer 10

false

Question 11

a buffer maintains your blood pH in the range of 7.35-7.45

Answer 11

True

Question 12

The force of attraction between atoms or ions within a compound is known as a van der waals force

Answer 12

true

Question 13

water is able to cling to surfaces because of ionic bonda

Answer 13

false

Question 14

cells that have a low requirement for energy generally have many mitochondria

Answer 14

false

Question 15

carbon can only form a single and double bonds

Answer 15

false

Question 16

a Na /K pump simultaneously three Na ions out of a cell and pumps three K ions into the cell

Answer 16

false

Question 17

the cell membrane is a dynamic barrier surrounding the cytosol

Answer 17

false

Question 18

cholestrol has a hydrophillic OH group at one end and a Hydrophobic region at the other end

Answer 18

true

Question 19

if a red blood cell is placed in an isotonic solution, there will be no net movement of water

Answer 19

true

Question 20

the transmembrane exchange of materials involves the plasma membrane only

Answer 20

false

Question 21

a triglyceride is made of glycerol attached to one fatty acid

Answer 21

false

Question 22

protiens that are embedded in the lipid bilayer are called peripheral membrane protiens

Answer 22

false

Question 23

the heme group in hemoglobin is an example of an R group

Answer 23

false

Question 24

a vacuole takes up 50 to 90% of an animal cells interior

Answer 24

false

Question 25

molecules that are best able to. move across a membrane unassisted are small polar molecules

Answer 25

false

Question 26

the R groups of non polar amino acids are hydrophilic

Answer 26

false

Question 27

a cell is placed in a hypertonic solution this means the concentration of water is higher in the solution

Answer 27

false

Question 28

membrane protiens have four functions, transport, enzymatic activity, triggering signals, and communication

Answer 28

false

Question 29

lipids are hydrophillic

Answer 29

false

Question 30

scientists are researching the use of nanobots to diagnose and treat cancer

Answer 30

true

Question 31

the transport of ions is facillitated by carrier protiens

Answer 31

false

Question 32

carbohydrates provide more energy than fats do

Answer 32

false

Question 33

in growing peptide strand amino acids are added to the -NH2 group

Answer 33

false

Question 34

most peripheral protiens are founf on the cytoskeleton side of the membrane

Answer 34

true

Question 35

cillia are hair like structures that create movement

Answer 35

true

Question 36

phospholipid molecules in a membrane are arranged with their non polar fatty acid tails facing the exterior

Answer 36

false

Question 37

enzyme inhibitors increase the rate at which an enzyme catalyst a reaction

Answer 37

false

Question 38

poly peptide chains are formed int the ribosomes and enter the smooth Er where they are modified into final form

Answer 38

false

Question 39

a red blood cell that is placed in a hypertoni solution will expand false

Answer 39

false

Question 40

a nucleotide consists of a sugar- lipid- nitrogenous base

Answer 40

false

Question 41

a hydroxyl group is R-COOH

Answer 41

false

Question 42

osmosis is a form of active membrane transport

Answer 42

false

Question 43

pseudopods are used in some eukaryotic cells to move the cell and engulf prey

Answer 43

true

Question 44

peripheal membrane protiend are held to membrane surfaces by covalent bonds

Answer 44

false

Question 45

sucrose is made of glugose and glactose

Answer 45

false- B fructose, B glucose

Question 46

the phosopholipid bilayer is very solid

Answer 46

false

Question 47

subunits of ribosomes are assembled in the rough ER

Answer 47

false

Question 48

a carbon has 6 protons 7 neutrons

Answer 48

false- 4 protons, 4 neutrons

Question 49

cholesterol is only found in the membrane of plant cells

Answer 49

false