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7th Grade Life Science > Test 1 > Flashcards

Test 1 Flashcards

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Biology 101 flashcards
1
Q

Three organisms

A

(Just name three living things)

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2
Q

6 characteristics of living things

A 
Cellular organization
Containing similar chemicals
Using energy
Responding to surroundings
Growing and developing 
Reproduction
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3
Q

How small is a cell?

A

So small that over 1million can fit in this period.

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4
Q

Name an unicellular organism

A

Bacteria

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5
Q

What do cells in a multicellular organism do?

A

They let you move, think and stay alive

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6
Q

What are the 5 chemicals of life?

A 
Water 
Proteins 
Lipids 
Nucleic acids 
Carbohydrates
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7
Q

Why do we need water

A

To function

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8
Q

Why do we need proteins and lipids

A

They make up cells

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9
Q

Why do we need nucleic acids

A

To direct the cells

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10
Q

Why do we need carbohydrates?

A

For energy

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11
Q

Why do cells need energy

A

To do their job

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12
Q

What is there difference between growth and development?

A

Growth makes you bigger

Development makes you more complicated

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13
Q

Spontaneous generation is not correct because

A

Living things do not come from dead things

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14
Q

What are the 4 needs of living things?

A

Water
Food
Living space (not shelter)
Stable internal conditions

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15
Q

How do autotrophs get energy?

A

They get energy from the sun

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16
Q

How do heterotrophs get energy?

A

From eating autotrophs or other heterotrophs that ate autotrophs.

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17
Q

Why do scientists need to classify living things?

A

Biologists use classification to organize living things into groups so that the organisms are easier to study.

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18
Q

How did the scientist Linnaeus classify living things? What was this called?

A

Linnaeus classified organisms based on observable features.

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19
Q

How is a scientific name created? What does each part mean?

A

A scientific name is the genus name and the species name combined. The genus name is a classification grouping that contains similar closely related organisms. The species name is a group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.

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20
Q

Why do scientists use binomial nomenclature?

A

Binomial nomenclature is a unique 2 part naming system to give each organism a scientific name.

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21
Q
  1. List the eight major levels from broadest to most specific.
A

Domain, Kingdom, Phylum, Class, Order, Family, Genus, & Species

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22
Q

When 2 organisms share many of the same classification levels what does that say about those 2 organisms?

A

The more classification levels that two organisms share, the more characteristics they have in common.

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23
Q
  1. What phylum does the great horned owl belong to? Family? Scientific name?
A

Phylum- Chordata Family- Strigidae Scientific name- Bubo virginianus

24
Q
  1. What is a field guide?
A

Field guides are books with illustrations that highlight differences between similar looking organisms.

25
Q
  1. What is a taxonomic key?
A

Taxonomic keys are a series of paired statements that describe the physical characteristics of different organisms.

26
Q

Explain Darwin’s theory.

A

Two groups of a single species can accumulate enough differences over a long period of time to eventually become two separate species. This process is called evolution.

27
Q
  1. What is the importance of a common ancestor when determining evolutionary history?
A

When an organism shares a common ancestor they share an evolutionary history.

28
Q

List 2 ways to determine evolutionary history.

A

Comparing structure and chemical make-up

29
Q

Why would scientists study the chemical makeup of an organism?

A

The more closely two species are related, the more similar the chemicals that make up their cells.

30
Q

What are the three domains into which organisms are classified?

A

Bacteria, Archaea, Eukarya

31
Q
  1. How are organisms placed into domains and kingdoms? Hint, there are 3.
A 
Cell type  (prokaryote or eukaryote)
Ability to make food (autotroph or heterotroph)
Number of cells in their bodies  (unicellular or multicellular)
32
Q
  1. Members of the domain Bacteria are what?
A

Prokaryotes

33
Q
  1. A prokaryote is what?
A

A prokaryote is an organism whose cell lacks a nucleus.

34
Q

A nucleus is what?

A

A nucleus is a dense area in a cell that contains nucleic acids.

35
Q
  1. How is the nucleus of prokaryotes different from other organisms?
A

There is not a nucleus in a prokaryote. Or nucleic acids are not contained in the nucleus.

36
Q

Members of the domain Archaea can be found in what types of environments?

A

Extreme environments including hot springs, very salty water, swamps, intestines of cows.

37
Q
  1. Archaea comes from the Greek word meaning what?
A

Ancient

38
Q

How are archaea like bacteria?

A

Archaea and bacteria are alike because they are unicellular prokaryotes.

39
Q
  1. How are archaea different from bacteria?
A

Archaea are different from bacteria but there are important differences in the structure and chemical makeup of their cells.

40
Q
  1. Organisms in the domain Eukarya all have what in common?
A

All the cells have a nucleus.

41
Q
  1. What kingdoms do scientist classify organisms in the Eukarya domain? Hint, there are 4.
A

Protist, Fungi, Plant, & Animal

42
Q
  1. Why is the protist kingdom sometimes call the “odds and ends” kingdom?
A

The members of this kingdom are so different from one another.

43
Q
  1. Describe how protists obtain their energy? Hint, autotroph, heterotroph, or both.
A

Both

44
Q
  1. Describe the different cellular organizations of protists. Hint, unicellular, multicellular, or both
A

both.- mainly unicellular but some multicellular seaweeds.

45
Q
  1. Describe how fungi obtain their energy? Hint, autotroph, heterotroph, or both.
A

Heterotroph

46
Q

Describe the different cellular organizations of fungi. Hint, unicellular, multicellular, or both.

A

both. - mainly multicellular but yeast can be unicellular

47
Q
  1. Describe how plants obtain their energy? Hint, autotroph, heterotroph, or both.
A

Autotroph

48
Q

Describe the different cellular organizations of plants. Hint, unicellular, multicellular, or both

A

Multicellular

49
Q
  1. Describe how animals obtain their energy? Hint, autotroph, heterotroph, or both.
A

Heterotroph

50
Q
  1. Describe the different cellular organizations of animals. Hint, unicellular, multicellular, or both.
A

Multicellular

51
Q
  1. Which two kingdoms consist only of heterotrophs?
A

Fungi & Animals

52
Q
  1. Which two domains include only organisms that are prokaryotes?
A

Bacteria & Archaea

53
Q
  1. What do the cells of protists, fungi, plants, and animals have in common?
A

They all have a nucleus (eukaryotic)

54
Q
  1. How are protists and plants similar?
A

They both can be autotrophs or they both are eukaryotic (have a nucleus)

55
Q
  1. How are protists and plants different?
A

Protists can be unicellular and plants are multicellular. Some protists are heterotrophs while plants can only be autotrophs.

56
Q
  1. You learn that the Venus flytrap is in the same kingdom as pine trees. What characteristics do these organisms share?
A

Multicellular, have a nucleus, autotroph

7th Grade Life Science (3 decks)

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