All

Question 1

What is a biological macromolecule

Answer 1

Essential molecules for all forms of life to survive

Question 2

3 examples of macromolecule

Answer 2

carbohydrates, proteins and lipids.

Question 3

What are nutrients?

Answer 3

Elements and compounds a organism need to reproduce, grow, and live

Question 4

What are macronutrients

Answer 4

Elements needed in large amounts for organisms

Question 5

What are micronutrients?

Answer 5

Elements needed in smaller amounts for organisms

Question 6

What are three things living things require to survive?

Answer 6

carbohydrates, proteins and
lipids

Question 7

What atoms make up all carbohydrates, proteins and
lipids macromolecules?

Answer 7

carbon, hydrogen, oxygen

Question 8

What are organic compounds?

Answer 8

Complex compounds that contain carbon

Question 9

3 examples of Organic Compounds

Answer 9

fossil fuels, natural gas, and coal

Question 10

True or False: Earth contains more inorganic molecules

Answer 10

False: On Earth,
these molecules far outnumber inorganic molecules.

Question 11

What are inorganic compounds

Answer 11

Substances that do not contain carbon and do not
come from living matter

Question 12

2 examples of inorganic compounds?

Answer 12

Baking soda and the mineral quartz

Question 13

What is biological magnification?

Answer 13

increasing concentration of a
substance

Question 14

Whats the concentration of chemicals in the environment
usually measured in?

Answer 14

parts per million (ppm)

Question 15

What is PPM

Answer 15

One part per million means that one unit of a substance (solute) can be found in one million units of solution (solvent).

Question 16

How to calculate PPM?

Answer 16

Amount of solute/Amount of solute = x/1000000

Question 17

What are pesticides?

Answer 17

Chemicals used to kills pest

Question 18

What are pests?

Answer 18

Organisms that harm people, crops, and structures

Question 19

What are the 3 types of pesticides?

Answer 19

Herbicides, insecticides, and fungicides

Question 20

What is Toxicity?

Answer 20

How poisonous a substance is to an organism

Question 21

What are Toxins?

Answer 21

substances that produce serious
health problems or death to a
organism.

Question 22

What are heavy metals?

Answer 22

(Can be Toxic) metals with the density thats five or more times heavier than an equal volume of water

Question 23

3 Examples of Heavy metals

Answer 23

copper, lead, and zinc,

Question 24

How do we compare toxins?

Answer 24

Using LD50

Question 25

What does LD50 mean?

Answer 25

Lethal dose 50%

Question 26

What is LD50

Answer 26

amount of a substance that causes 50% of animals to when exposed

Question 27

What is LD50 measured in?

Answer 27

mg/kg, which is equal to parts per million (ppm).

Question 28

What do Water Quality consist of

Answer 28

the chemical, physical, and biological characteristics of water, and its suitability for a specific use, such as drinking, swimming, or supporting aquatic life

Question 29

What is Biodegradation

Answer 29

decomposition of organic material (pollutants) by microorganisms such as bacteria.

Question 30

What is Aerobic?

Answer 30

When organisms requires oxygen to live

Question 31

What is Anaerobic?

Answer 31

When organisms live in little or no oxygen

Question 32

What factors affect the rate of biodegradation? (5)

Answer 32

Temperature (warm is better) Soil moisture (needed) pH Oxygen (for aerobic bacteria) Available nutrients

Question 33

What is an acidic substance?

Answer 33

Substances on the left side of the pH scale = pH < 7

Question 34

What are basic (alkaline) substances?

Answer 34

Substances on the right side of the pH scale = pH > 7

Question 35

What are the properties of acidic substances? (2)

Answer 35

acids have more hydrogen ions (H+) and taste sour

Question 36

What are the properties of basic (alkaline) substances? (3)

Answer 36

bases have less hydrogen ions (H+), taste bitter, and feel slippery

Question 37

What does the pH scale determine?

Answer 37

the concentration of hydrogen ions.

Question 38

What is spring acid shock?

Answer 38

when the ice and snow melt, the acid meltwater flows into aquatic systems, and dramatically lowers the pH of the water

Question 39

Using red litmus paper, which color do acids appear?

Answer 39

Red, no color

Question 40

Using blue litmus paper, which color do acids appear?

Answer 40

Blue

Question 41

Using red litmus paper, which color do bases (alkali) appear?

Answer 41

Blue

Question 42

Using blue litmus paper, which color do bases (alkali) appear?

Answer 42

Blue, No change