Unit 1 Test

Question 0

What is science?

What is it not?

Answer 0

Science IS the best possible explanation based on evidence.

Science IS NOT a search for truth.

Question 1

What is biology?

Answer 1

The scientific study of life

Question 2

What are the characteristics of living things?

Answer 2

Order- cells, dna
Growth/Development
Reproduction
Energy usage, metabolism
Evolve/Adapt
Response to stimuli
Regulation**HOMEOSTASIS
ex) sweating, shivering

Question 3

What is the name of the process by which organisms keep their internal conditions relatively stable?

Answer 3

HOMEOSTASIS

Question 4

What characteristic of life explains why birds fly south for the winter?

Answer 4

FOR THE FUNZIEZZZZ IDK

Question 5

What term means that living things change slowly over time?

Answer 5

Evolution

Question 6

What is the term that refers to how organisms use energy (the sum of all their chemical reactions)?

Answer 6

Metabolism

Question 7

What are the levels of organization from atom to organism?

Answer 7

Atom
Molecule
Macromolecule 
Organelle
Cell
Tissue
Organ
Organ system
Organism

Question 8

What are the levels of organization from organism to biosphere?

Answer 8

Organism
Population
Community
Ecosystem
Biome
Biosphere

Question 9

What is the term for a group of organisms of one type living in the same place?

Answer 9

Population

Question 10

What is the term for the land, water and air on earth?

Answer 10

Biosphere

Question 11

Whoa is a community combined with its abiotic factors?

What is ABIOTIC?

Answer 11

Ecosystem

A non living component of an ecosystem such as air, water, or temperature

Question 12

What is

k h da m d c m

Answer 12

Kilometer
Hectometer
Dekameter
Meter
Decimeter
Centimeter
Millimeter
Micrometer

Question 13

What are the basic units of length, volume, and mass in the metric system?

Answer 13

Length- meter
Volume- liter
Mass- grams

Question 14

Are inches, feet, yards, etc units in the metric system?

Answer 14

No

Question 15

How many meters are in 3.5 km? cm?

Answer 15

3,500 meters

0.035 centimeters

Question 16

Convert 4 L of water in milliliters, deciliters, and liters.

Answer 16

4,000 milliliters
40 deciliters
4 liters

Question 17

What is the first step in the scientific process?

Answer 17

Ask a question

Determine problem

Question 18

What is a theory?

Answer 18

• a hypothesis that has been tested repeatedly and supported by enormous amounts of evidence
• it can be disproven by a single experiment (so it may be modified or changed)

Question 19

What is an observation?

Answer 19

• information that can be obtained through the senses
• it may be Qualitative (noting a characteristic) OR
• it may be Quantitative (noting a numerical value)

Question 20

What is an inference?

Answer 20

A logical conclusion based on observation that utilizes prior knowledge

Question 21

What is the difference between a qualitative and quantitative observation?

Answer 21

Qualitative- having a specific characteristic

Quantitative- has numerical component

Question 22

What is a hypothesis?

Answer 22

• an educated guess
• it must be testable
• it does not need to be correct to be valuable
• it should be in the form of a statement (not a question)

Question 23

What does a hypothesis become when it is supported by enough experimental data?

Answer 23

A theory

Question 24

Must a hypothesis be testable?

Answer 24

YAAAAASSSS

Question 25

Can a hypothesis be disproved by a single experiment?

Answer 25

No. It must have multiple testings

Question 26

What would be a hypothesis for why a plant is dying?

Answer 26

If the plant is out in the sun too long, then it will shrivel up and die

Question 27

Can a theory be revised or replaced?

Answer 27

Yes. Theories are tested constantly over time, but all science is open to a better answer

Question 28

Use the scientific method to draw valid conclusions. WHAT IS IT

Answer 28

1) ask a question 2) background research 3) create hypothesis 4) test with an experiment 5) record results (analysis) 6) compare hypothesis to conclusion

Question 29

What are the parts of an atom?

Answer 29

Proton (p+) inside nucleus Neutron (n•) inside nucleus Electron (e-) outside of nucleus

Question 30

How to find proton electron and neutron amount?

Answer 30

Proton- atomic number Electron- matches proton Neutron- atomic weight minus proton amount

Question 31

How is iron important to human health?

Answer 31

- forms hemoglobin in RED BLOOD CELLS | - carries oxygen

Question 32

What is an iron associated disorder?

Answer 32

(2 much) damaged arteries leading to heart disease (2 little) anemia!!!!!! symptoms- pale skin, fatigue, high heart rate, hair loss, low hemoglobin

Question 33

What is an iron source?

Answer 33

``` Meat Poultry Fish Beans Green veggies ```

Question 34

How is sodium important to human health?

Answer 34

-controls blood pressure, regulates function of muscles and nerves

Question 35

What are sodium associated disorders?

Answer 35

(2 little) low sodium levels in blood, HYPONATREMA (2 little) high blood pressure, increased risk of stomach cancer, fragile bones, HYPERTREMA

Question 36

What are sources of sodium?

Answer 36

SAAAALLLTTT, almost everything

Question 37

How is magnesium important to human health?

Answer 37

ADJUSTS CHOLESTEROL LEVELS!!!!! And releases it into blood stream -produces energy

Question 38

What are magnesium associated disorders?

Answer 38

(2 little) hypomagnasaemia, appetite loss, vomiting, weakness, irritability (2 much) excessive urination, hypermagnasaemia

Question 39

What are sources of magnesium?

Answer 39

``` Nuts Seeds Dark greens Fish Bananas DARK CHOCOLATE ```

Question 40

Why is potassium important to human health?

Answer 40

Builds protein, breaks down carbs, builds muscle, balances acid levels

Question 41

What are potassium associated disorders?

Answer 41

(2 little) hypokalemia, low blood levels, weak muscles (2 much) hyperkalemia, blood level increase, kidney issues

Question 42

What are sources of potassium?

Answer 42

POTATOOOO babas White beans

Question 43

Why is calcium important to human health?

Answer 43

CONTRACTS MUSCLES, helps form and maintain healthy teeth and bones, stabilizes heart rate

Question 44

What are calcium associated disorders?

Answer 44

(2 little) OSTEOPOROSIS- brittle bones, hypocalcemia (2 much) hypercalcemia, wear bones, kidney stones, excessive thirst

Question 45

Sources of calcium?

Answer 45

``` DAIRY PRODUCT Water cress Cabbage Tofu Almonds Cannes fish- sardines Leafy greenzzzz ```

Question 46

Why does heart rate increase?

Answer 46

If you are exercising | -causing more blood to pump

Question 47

What tools are used to measure which things?

Answer 47

``` Temperature- thermometer Time- stop watch Weight- scale Length- meter stick Angles- protractor Volume- graduated cylinder ```

Question 48

What happens to fractures when they heal?

Answer 48

- they fill up empty space | - build more tissue to ensure that it doesn't break again

Question 49

What are parts of an experiment?

Answer 49

``` Controlled variable Control group Independent/manipulated variable Dependent/responding variable Controlled experiment ```

Question 50

Controlled variable?

Answer 50

All of the variables that do NOT change

Question 51

Control group?

Answer 51

Group that is unchanged, normal

Question 52

Independent/manipulated variable?

Answer 52

ONE variable that the scientist changes intentionally

Question 53

Dependent/responding variable?

Answer 53

The change that results from independent variable

Question 54

What safety procedures must you follow because of the fact that you come into contact with organisms that you cannot see?

Answer 54

``` Gloves Goggles Hair out of face Listen to teacher Report and broken pieces Report spills ```