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Biology > Unit 1 Test > Flashcards

Unit 1 Test Flashcards

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0
Q

What is science?

What is it not?

A

Science IS the best possible explanation based on evidence.

Science IS NOT a search for truth.

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1
Q

What is biology?

A

The scientific study of life

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2
Q

What are the characteristics of living things?

A 
Order- cells, dna
Growth/Development
Reproduction
Energy usage, metabolism
Evolve/Adapt
Response to stimuli
Regulation**HOMEOSTASIS
ex) sweating, shivering
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3
Q

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

A

HOMEOSTASIS

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4
Q

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

A

FOR THE FUNZIEZZZZ IDK

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5
Q

What term means that living things change slowly over time?

A

Evolution

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6
Q

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

A

Metabolism

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7
Q

What are the levels of organization from atom to organism?

A 
Atom
Molecule
Macromolecule 
Organelle
Cell
Tissue
Organ
Organ system
Organism
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8
Q

What are the levels of organization from organism to biosphere?

A 
Organism
Population
Community
Ecosystem
Biome
Biosphere
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9
Q

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

A

Population

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10
Q

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

A

Biosphere

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11
Q

Whoa is a community combined with its abiotic factors?

What is ABIOTIC?

A

Ecosystem

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

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12
Q

What is

k h da m d c m

A 
Kilometer
Hectometer
Dekameter
Meter
Decimeter
Centimeter
Millimeter
Micrometer
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13
Q

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

A

Length- meter
Volume- liter
Mass- grams

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14
Q

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

A

No

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15
Q

How many meters are in 3.5 km? cm?

A

3,500 meters

0.035 centimeters

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16
Q

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

A

4,000 milliliters
40 deciliters
4 liters

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17
Q

What is the first step in the scientific process?

A

Ask a question

Determine problem

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18
Q

What is a theory?

A
  • 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)
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19
Q

What is an observation?

A
  • information that can be obtained through the senses
  • it may be Qualitative (noting a characteristic) OR
  • it may be Quantitative (noting a numerical value)
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20
Q

What is an inference?

A

A logical conclusion based on observation that utilizes prior knowledge

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21
Q

What is the difference between a qualitative and quantitative observation?

A

Qualitative- having a specific characteristic

Quantitative- has numerical component

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22
Q

What is a hypothesis?

A
  • 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)
23
Q

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

A

A theory

24
Q

Must a hypothesis be testable?

A

YAAAAASSSS

25
Q

Can a hypothesis be disproved by a single experiment?

A

No. It must have multiple testings

26
Q

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

A

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

27
Q

Can a theory be revised or replaced?

A

Yes.

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

28
Q

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

A

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

29
Q

What are the parts of an atom?

A

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

30
Q

How to find proton electron and neutron amount?

A

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

31
Q

How is iron important to human health?

A
  • forms hemoglobin in RED BLOOD CELLS

- carries oxygen

32
Q

What is an iron associated disorder?

A

(2 much) damaged arteries leading to heart disease

(2 little) anemia!!!!!!
symptoms- pale skin, fatigue, high heart rate, hair loss, low hemoglobin

33
Q

What is an iron source?

A 
Meat
Poultry
Fish
Beans
Green veggies
34
Q

How is sodium important to human health?

A

-controls blood pressure, regulates function of muscles and nerves

35
Q

What are sodium associated disorders?

A

(2 little) low sodium levels in blood, HYPONATREMA

(2 little) high blood pressure, increased risk of stomach cancer, fragile bones, HYPERTREMA

36
Q

What are sources of sodium?

A

SAAAALLLTTT, almost everything

37
Q

How is magnesium important to human health?

A

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

38
Q

What are magnesium associated disorders?

A

(2 little) hypomagnasaemia, appetite loss, vomiting, weakness, irritability

(2 much) excessive urination, hypermagnasaemia

39
Q

What are sources of magnesium?

A 
Nuts
Seeds
Dark greens
Fish
Bananas
DARK CHOCOLATE
40
Q

Why is potassium important to human health?

A

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

41
Q

What are potassium associated disorders?

A

(2 little) hypokalemia, low blood levels, weak muscles

(2 much) hyperkalemia, blood level increase, kidney issues

42
Q

What are sources of potassium?

A

POTATOOOO
babas
White beans

43
Q

Why is calcium important to human health?

A

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

44
Q

What are calcium associated disorders?

A

(2 little) OSTEOPOROSIS- brittle bones, hypocalcemia

(2 much) hypercalcemia, wear bones, kidney stones, excessive thirst

45
Q

Sources of calcium?

A 
DAIRY PRODUCT
Water cress
Cabbage
Tofu
Almonds
Cannes fish- sardines
Leafy greenzzzz
46
Q

Why does heart rate increase?

A

If you are exercising

-causing more blood to pump

47
Q

What tools are used to measure which things?

A 
Temperature- thermometer
Time- stop watch
Weight- scale
Length- meter stick
Angles- protractor
Volume- graduated cylinder
48
Q

What happens to fractures when they heal?

A
  • they fill up empty space

- build more tissue to ensure that it doesn’t break again

49
Q

What are parts of an experiment?

A 
Controlled variable
Control group
Independent/manipulated variable
Dependent/responding variable
Controlled experiment
50
Q

Controlled variable?

A

All of the variables that do NOT change

51
Q

Control group?

A

Group that is unchanged, normal

52
Q

Independent/manipulated variable?

A

ONE variable that the scientist changes intentionally

53
Q

Dependent/responding variable?

A

The change that results from independent variable

54
Q

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

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

Biology (13 decks)

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