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7th Grade - Life Science > Living Characteristics > Flashcards

Living Characteristics Flashcards

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Biology 101 flashcards
1
Q

What are the four characteristics of Life

A
  • Made of Cells
  • Contains similar chemicals and use energy
  • respond to surroundings
  • grow, develop and reproduce
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2
Q

What is an organism

A

Any living thing

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3
Q

What is a cell

A

The basic unit of structure and function in living things

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4
Q

What is unicellular vs multicellular

A
  • unicellular - one celled organism
  • multicellular - many celled organism
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5
Q

What are similar chemicals

A
  • water
  • carbohydrates
  • proteins
  • lipids (fats)
  • nucleic acid (dna)
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6
Q

What are growth and development

A
  • growth - becoming larger
  • development - change that leads to maturity
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7
Q

What do multicellular organisms do to become larger or replace cells that have died

A

Make new cells

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8
Q

What is a stimulus

A

A change or signal in the environment that can make an organism react in some way

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9
Q

What is a response

A

An action or change in behavior

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10
Q

Give an example of stimulus and response

A

Stimulus - touching baby’s hand
Response - hand / fingers curl

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11
Q

What is reproduction

A
  • creating offspring similar to parent
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12
Q

Compare asexual to sexual reproduction

A
  • asexual - only one parent
  • sexual - two parents
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13
Q

Give an example of asexual reproduction

A

Hydra

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14
Q

What organisms reproduce sexually

A
  • mammals, birds, most plants
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15
Q

What is spontaneous generation

A
  • the mistaken idea that living things arise from non living sources
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16
Q

What experiment destroyed the idea of spontaneous generation? When was this experiment conducted

A
  • Redis experiment watching maggots hatch from meat after observing flies on them
  • 1600s
17
Q

What is the second major experiment to debunk spontaneous generation

A

-Pasteurs experiment
- boiled broth, exposed some broth to bacteria after, some not exposed to bacteria..
- broth with bacteria became cloudy

18
Q

What is a control group

A
  • group that is exposed to all variables as the experimental, except for the variable being tested
19
Q

What is an experimental group

A
  • group exposed to all variable of an experiment, including variable being tested
20
Q

Compare autotrophs and heterotrophs

A
  • autotroph - make their own energy - use suns energy to convert water and a gas into food
  • heterotroph - consumers - eat autotroph
  • auto - self
  • hetero- other
  • troph - feeder
21
Q

What is homeostasis

A

The maintenance of a stable internal condition

7th Grade - Life Science (1 decks)

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