Final review semester one

Question 1

Over the last 4 billion years, how has oxygen changed In earth atmosphere?

Answer 1

The amount of oxygen has increased

Question 2

Biosphere

Answer 2

Living organisms

Question 3

Atmosphere

Answer 3

Air and clouds

Question 4

Geosphere

Answer 4

Solid earth

Question 5

Hydrosphere

Answer 5

Water

Question 6

How do scientist know how oxygen levels have changed over deep time?

Answer 6

They discovered ancient plants, photosynthesis, 02, bacteria

Question 7

As oxygen levels accumulated in the atmosphere what effect did this have on the biosphere?

Answer 7

Moore and larger animals

Question 8

While using oxygen is not a characteristic of living things, it is connected to one specifically which is this and why?

Answer 8

Requiring energy cellular respiration

Question 9

What are the four major macromolecules?

Answer 9

Carbohydrates, lipids, nucleic acid’s, proteins

Question 10

What is a monomer?

Answer 10

Hey single unit that makes up macromolecules are polymers

Question 11

What is the major role of carbohydrates in living organisms?

Answer 11

Carbohydrates are used for energy storage

Question 12

What is the major role of nucleic acid’s in living organisms?

Answer 12

Nucleic acid store genetic information

Question 13

What is the major role of fatty acids in living organisms?

Answer 13

Fatty acids create cell membrane

Question 14

What is the major role of amino acids?

Answer 14

Amino acids make structures and enzymes

Question 15

Fatty acids are the monomer that make what macromolecule?

Answer 15

Lipids

Question 16

Nucleotides are the monomer that make what macromolecule?

Answer 16

Nucleic acid’s

Question 17

Amino acids are the monomer that make what macromolecule?

Answer 17

Proteins

Question 18

Monosaccharides are the monomer that make what macromolecule?

Answer 18

Carbohydrates

Question 19

What is the relationship between the food we eat and ATP?

Answer 19

Food has glucose which gives ATP energy

Question 20

What is the role of enzymes?

Answer 20

They speed up chemical reactions and break things down

Question 21

What is osmosis?

Answer 21

The diffusion of water molecules only

Question 22

What is the diffusion?

Answer 22

When things move from high concentration to low concentration

Question 23

What do we call it when glucose enters the cell through a channel protein?

Answer 23

Facilitated defusion

Question 24

When water and oxygen travel between the inside of the cell and the outside of the cell they cross the

Answer 24

Phospholipid bilayer

Question 25

List three examples of how the body maintains homeostasis

Answer 25

Shivering to produce heat Throwing up to remove poisons you might have eaten Sweating to cool the body through evaporation Sneezing to get back to area and viruses and foreign material out of your nose