Exam Study

Question 1

emergent properties

Answer 1

new properties that arise with each step upward in the hierarchy of life

Question 2

eukaryotic cells

Answer 2

contain membrane-enclosed organelles and include a DNA containing nucleus

Question 3

prokaryotic cells

Answer 3

lack membrane closed organelles

Question 4

gene expression

Answer 4

process which information is encoded in DNA directs the synthesis of proteins

Question 5

genome

Answer 5

genetic material of an organism or virus

Question 6

producers

Answer 6

convert energy from sunlight to chemical energy

Question 7

consumer

Answer 7

organisms that feed on others or their remains

Question 8

feedback regulation

Answer 8

regulation of a process by its output or end product

Question 9

negative feedback

Answer 9

accumulation of end product slows its production

Question 10

positive feedback

Answer 10

an end product speeds up it’s own production

Question 11

elements

Answer 11

cannot be broken down chemically to other substances

Question 12

hydrolysis

Answer 12

breaking of water

Question 13

covalent bond

Answer 13

the sharing of a pair of valence electrons by two atoms

Question 14

electronegativity

Answer 14

an atoms attraction for the electrons in a covalent bond

Question 15

non polar covalent bonds

Answer 15

atoms share electrons equally

Question 16

polar covalent bonds

Answer 16

one atoms is more electronegative than the other and there is not equal sharing

Question 17

hydrogen bond

Answer 17

when hydrogen atom covalently bonds to an electronegative atom attracted to another atom

Question 18

ionic bonds

Answer 18

the sharing of electrons

Question 19

cohesion

Answer 19

hydrogen bonds hold water together

Question 20

hydrophilic

Answer 20

like water