Biol 108 midterm topic 9-13

Question 1

Macromolecules of life

Answer 1

Nucleic acids,
proteins, polysaccharides, and lipid

Question 2

Polymer

Answer 2

Large molecule with repeated units of the same structure

Question 3

Characteristic of life Organization

Answer 3

structurally composed of one or more cells

Question 4

Characteristic of life Homeostasis

Answer 4

Maintenance of internal environment despite external variations

Question 5

Characteristic of life metabolism

Answer 5

system of management of materials and energy in the form of chemical reactions

Question 6

Response to stimuli-characteristic of life

Answer 6

changes in growth alteration of alteration of chemical reactions or movement

Question 7

Adaption-characteristic of life

Answer 7

ability to change over time in response to the environment

Question 8

Reproduction characteristic of life

Answer 8

ability to produce new individual offsprings

Question 9

Viruses and viroids

Answer 9

Both-infectious parasitic

Question 10

Deep Time

Answer 10

Geological or cosmic time

Question 11

Geological record and eons

Answer 11

Archaen
proeterozoic
phanerzoic
-Paleozoic Era
-Mesozoic Era
-Cenozoic Era

Question 12

Body fossils

Answer 12

Actual remains of the organism after being replaced by minerals

Question 13

Preserved fossils

Answer 13

Actual remains of organisms with some percentage of organic material sub fossils have a high percentage of organic material

Question 14

Cast

Answer 14

sedimental in fills of space previously occupied by an organism

Question 15

Trace fossils

Answer 15

records of biological activities left by organisms

Question 16

Relative dating

Answer 16

sequence of fossils from old to young corresponding to sedimentary strata
-numerical number absent
-based on sedimentary formations

Question 17

Index fossil

Answer 17

remains of organism that only existed for a short period of time fill in gaps

Question 18

Absolute dating

Answer 18

using evidence to estimate numerical age before the present

Question 19

Radiometric dating

Answer 19

based on the decay of radioactive isotopes
half life- time for 50% of it to be gone

Question 20

Dendrochronology

Answer 20

based on growth in trees

Question 21

Amino acid racemization

Answer 21

based on generalized process of protein decay after death

Question 22

Plate tectonics

Answer 22

Crust of the earth move and collide to reshape earths landscape cause continental drift
oceanic plates- under oceans
continental plates-rock mass above and below sea

Question 23

epicontenental sea

Answer 23

body of water above the continental plate

Question 24

End permian

Answer 24

Mass extinction 95 % of species greatest magnitude out of all extinctions
cause extra terrestrial impact and mass volcanic activities

Question 25

end Cretaceous

Answer 25

mass extinction 78 percent of species
extra terrestrial impact (crater)

Question 26

Primordial soup theory

Answer 26

life on earth likely arised from chemical reactions that gave rise to molecules of life

Question 27

polymerization

Answer 27

repeated units of small molecules called monomers become chemically linked into a long chain of called polymers

Question 28

Prokaryotes and characteristics

Answer 28

earliest life forms on earth form a paraphyletic group with archeae and bacteria domains