Biology Unit 3 Test

Question 1

Convent Bond

Answer 1

atoms share electrons

Question 2

Hydrogen Bond

Answer 2

weaker bond, occurs between water molecules, due to partial charges

Question 3

Evaporation

Answer 3

water becomes vapor

Question 4

Condensation

Answer 4

vapor cools to liquid

Question 5

Transpiration

Answer 5

Plants release water vapor

Question 6

Precipitation

Answer 6

water falls (Rain snow hail, etc)

Question 7

Percolation

Answer 7

water filters into groundwater

Question 8

Human impact of the water cycle

Answer 8

pollution and deforestation disrupts the cycle

Question 9

Polarity

Answer 9

water has slight positive and negative charges, attracting other molecules

Question 10

Universal Solvent

Answer 10

water dissolves many substances

Question 11

Surface Tension

Answer 11

Water molecules create a “film” on surfaces

Question 12

Cohesion

Answer 12

makes water molecules stick to each other

Question 13

Adhesion

Answer 13

helps them stick to other surface

Question 14

Density

Answer 14

Ice is less dense so it floats

Question 15

Specific Heat

Answer 15

water absorbs heat slowly stabilizing enviroments

Question 16

What is the importance Carbon

Answer 16

Forms the backbone of all living organism

Question 17

Cellular Respiration

Answer 17

Release carbon dioxide (CO2)

Question 18

Photosynthesis

Answer 18

Plants use CO2 to make glucose

Question 19

Decompostion

Answer 19

Dead organisms return carbon to the environment

Question 20

Fossilization

Answer 20

dead material becomes fossils

Question 21

Combustion

Answer 21

burning fossil fuels release CO2

Question 22

Human Impact of fossil fuels

Answer 22

fossil fuels and deforestation increase CO2 affecting climate

Question 23

Major Elements

Answer 23

Carbon
Nitrogen
Oxygen
Phosphorus
Sulfur
(CNOPS)

Question 24

Carbohydrates

Answer 24

provides energy found in sugars and starches

Question 25

Lipids

Answer 25

Store energy make up cell membranes (fats and oils)

Question 26

Proteins

Answer 26

Building body structure, speed up reaction

Question 27

Nucleic Acids

Answer 27

DNA and RNA store genetic info

Question 28

Kwashiorkor

Answer 28

Protein deficency

Question 29

Scurvy

Answer 29

Vitamin C deficiency

Question 30

Diabetes

Answer 30

Blood sugar imbalance

Question 31

High Blood Sugar

Answer 31

Linked to high salt/fat

Question 32

Obesity

Answer 32

from excess calorie intake

Question 33

Enzymes

Answer 33

speed up reactions

Question 34

Lastase

Answer 34

breaks down lactose

Question 35

Pepsin

Answer 35

digests protein

Question 36

Amylase

Answer 36

breaks down carbs

Question 37

Lab examples

Answer 37

Catalase breaks hydrogen peroxide: bromelain breaks down proteins in jello

Question 38

Monomer

Answer 38

small parts of a larger structure

Question 39

Polymer

Answer 39

Larger structure made of smaller parts

Question 40

Saturated

Answer 40

Fats without double bonds (solid at room temp)

Question 41

Unsaturated

Answer 41

Fats with double bonds (solid or liquid at room temp)

Question 42

Amino Acids

Answer 42

building block of proteins

Question 43

Nucleotide

Answer 43

building block of nucleic acids (DNA/RNA)

Question 44

Hydrolysis

Answer 44

Water breaks down molecules

Question 45

Dehydrate Synthesis

Answer 45

water is removed to join molecules