The Chemical Basis of Life-Science

Question 1

why do all living things need water

Answer 1

because it is the universal solvent

Question 2

what is polarity

Answer 2

uneven charge distribution on a compound

Question 3

a solvent ______, a solute _________

Answer 3

dissolves something, gets dissolved

Question 4

what is dissolving

Answer 4

when molecules get smaller, but bonds are not broken

Question 5

what happens when ionic bonds are dissociated

Answer 5

they move away from each other and bonds remain

Question 6

every single cell makes its own __________

Answer 6

energy

Question 7

water is used to make ________

Answer 7

enzymes

Question 8

what are ionic solutes

Answer 8

made of ions; charged atoms; one negative, one positive

Question 9

an element is a ______ and is __________ throughout only one kind of matter present

Answer 9

pure substance, homogeneous

Question 10

compounds are:

Answer 10

homogeneous, pure substance

Question 11

two or more compounds that are physically put together, can be seperated

Answer 11

mixture

Question 12

something dissolved in water is a _______

Answer 12

solution

Question 13

different throughout, no specific ratio

Answer 13

heterogeneous

Question 14

same throughout

Answer 14

homogeneous

Question 15

what will a solute eventually do in a suspension

Answer 15

it will evenetually settle out of the solution

Question 16

pieces that get stuck in proteins, helps to clot

Answer 16

platelets

Question 17

a special solute in which the polarity has changed

Answer 17

colloid

Question 18

contains hydrogen ions; has ph between 1-6.9; tastes sour

Answer 18

acid

Question 19

what will a base always do

Answer 19

nuetralize an acid

Question 20

amino acids, enzymes, cell structure, peptide bonds, cellular repair, genes, and muscular formation are all included in _______

Answer 20

proteins

Question 21

if there is no nitrogen base between adedin and thymine and aytocin and guamine, they will not ______

Answer 21

attract

Question 22

most reactions in our bodies are _________

Answer 22

exothermic