lecture 1-5

Question 1

biosphere

Answer 1

collection of all ecosystems

Question 2

community

Answer 2

set of populations in a certain area

Question 3

ecosystem

Answer 3

all living and nonliving things in an area

Question 4

eukaryote

Answer 4

organism with cells that have nuclei and membranes

Question 5

macromolecule

Answer 5

large molecule made of smaller molecules

Question 6

molecule

Answer 6

chemical structure of at least 2 atoms

Question 7

organ

Answer 7

collection of related tissues performing a function

Question 8

organ system

Answer 8

related organs functioning together

Question 9

organelle

Answer 9

small structures within cells that carry out functions

Question 10

population

Answer 10

all individuals in a specific area

Question 11

prokaryote

Answer 11

single celled organism that lacks organelles and no nuclei

Question 12

acid

Answer 12

increase concentration

Question 13

adhesion

Answer 13

attraction between water and molecules

Question 14

anion

Answer 14

negative ion formed by gaining electrons

Question 15

base

Answer 15

decreases concentration

Question 16

buffer

Answer 16

prevents change in ph

Question 17

capillary action

Answer 17

water molecules are attracted to charge causes them to stick

Question 18

cation

Answer 18

positive ion formed by atom losing electrons

Question 19

chemical bond

Answer 19

interaction between molecules

Question 20

cohesion

Answer 20

how bugs can stand on water (tension)

Question 21

covalent

Answer 21

bond between elements

Question 22

dissociation

Answer 22

release of an ion from a molecule

Question 23

electronegativity

Answer 23

ability to attract electrons

Question 24

hydrogen bond

Answer 24

weak bond between slightly positive charged and slightly negative charged atoms

Question 25

ionic

Answer 25

chem bond between ions of opposite charges

Question 26

nonpolar covalent

Answer 26

between atoms when electrons are shared equally

Question 27

organic molecule

Answer 27

any molecule with carbon

Question 28

ph scale

Answer 28

lower = higher concentration

Question 29

polar covalent

Answer 29

unequal sharing of electrons between atoms

Question 30

disacharide

Answer 30

two sugar monomers in a glycosidic bond

Question 31

lipid

Answer 31

macromolecule that is nonpolar and insoluble in water

Question 32

monosaccharide

Answer 32

single unit or monomer of carb

Question 33

phospholid

Answer 33

two fatty acids and a phospate

Question 34

polysaccharide

Answer 34

long chain on monosacharides

Question 35

primary structure

Answer 35

linear sequence of amino acids in protein

Question 36

quaternary structure

Answer 36

association of discrete polypeptide subunits in a protein

Question 37

tertiary structure

Answer 37

protein 3d conformation

Question 38

wax

Answer 38

lipid comprised of long chain fatty acid

Question 39

chromatin

Answer 39

chromosome building material

Question 40

nuclear envelope

Answer 40

double membrane structure constitutes outermost portion of nucleus

Question 41

nucleolus

Answer 41

assembling ribosome subunits

Question 42

unified cell theory

Answer 42

one or more cell comprise all organisms