Life Kn Extreme Environments

Question 1

Average air temp on earth is

Answer 1

57f (14c)

Question 2

Avg ocean surface temperature

Answer 2

68f (20c)

Question 3

When radiation effected cells try to divide

Answer 3

They are destroyed

Question 4

Radioactivity less impact on insects because

Answer 4

Cells divide less frequently

Question 5

Humans produce _ new cells daily

Answer 5

Billions

Question 6

One of the toughest microorganisms

Answer 6

Deinococcus radiodurans

Question 7

_ one of the toughest microorganisms can survive vacuum

Answer 7

Deinococcus radioduran

Question 8

Heat causes proteins to

Answer 8

Denature

Question 9

Denature means protein loses its

Answer 9

Normal structure

Question 10

Heat resistant protein has _ bond

Answer 10

Cross-linking stabilizer

Question 11

_ have heat resistant protein

Answer 11

Thermophiles

Question 12

Thermophiles can survive water between _ and _

Answer 12

100-176f

Question 13

Usually proteins, such as _, when exposed to heat denature

Answer 13

Enzymes

Question 14

With cold _ in cells expand and rupture it

Answer 14

Ice crystal

Question 15

Cold-resistant cells contain

Answer 15

Antifreeze protein

Question 16

Cold lovers are

Answer 16

Psychrophiles

Question 17

Psychrophiles include _ spend winter in frozen water

Answer 17

Frogs

Question 18

Ice crystals are inside cell’s

Answer 18

Cytoplasm

Question 19

Cytoplasm in Psychrophiles contain

Answer 19

Cryoprotectants

Question 20

Cryoprotectants, or antifreeze proteins, ensure that

Answer 20

Ice only forms tiny crystals