Bio 111- Exam 3

Question 1

Universe began with big bang

Answer 1

13.7 bya

Question 2

Our solar system began

Answer 2

4.6 bya

Question 3

The earth is how old

Answer 3

4.55 byold

Question 4

Earth cooled enough for outer layers to solidify and oceans to form

Answer 4

4bya

Question 5

Life emerged

Answer 5

Between 4 and 3.5 bya

Question 6

Hadean

Answer 6

No life

Question 7

Archaean

Answer 7

Only prokaryotes

Question 8

Proterozoic

Answer 8

First eukaryotes

Question 9

Phanerozoic

Answer 9

(Starts with cambrian explosion of animals; land plants came later)

Question 10

When did multicellular eukatyotes arise?

Answer 10

1.5 bya

Question 11

First fossils in archaean period were how old

Answer 11

3.5 bya

Question 12

sphere shaped

Answer 12

cocci

Question 13

rod shaped

Answer 13

baccilli

Question 14

spiral shaped

Answer 14

spiralchaetes

Question 15

comma shaped

Answer 15

vibrios

Question 16

gram positive

Answer 16

thick purple

Question 17

gram negative

Answer 17

thin pink

Question 18

discoba

Answer 18

possess highly modified mitochondria

Question 19

land plants and relatives

Answer 19

plants, green algae and red algae all have common ancestor; based on plastid evolution

Question 20

alveolata

Answer 20

sac-like membranous vesicles

Question 21

stramenopila

Answer 21

strawlike hairs on surface of flagellum

Question 22

rhizaria

Answer 22

have thin hairlike extensions of the cytoplasm called filose pseudopia

Question 23

amoebozoa

Answer 23

pseudopia; slime mold

Question 24

opisthokonta

Answer 24

animal and fungal kingdoms and related protists