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Molecular & Cellular Biology > Characteristics of Life > Flashcards

Characteristics of Life Flashcards

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1
Q

Characteristic 1

A

Levels of Organization

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2
Q

Levels of Organization

A

-Biosphere
-Ecosystem
-Community
-Population
-Organism
-Organ system
-Organ
-Tissue
-Cell
-Organelle
-Molecule

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3
Q

Ecosystem Definition

A

All living things in an area + all nonliving physical components of the environment

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4
Q

Community Definition

A

All living things in an ecosystem

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5
Q

Population Definition

A

All the individuals of a species in a specified area

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6
Q

Organism Definition

A

An individual living thing

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7
Q

Organ System Definition

A

Group of several organs that work together to perform a function

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8
Q

Organ Definition

A

Structure that carries out a specific function within the organ system

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9
Q

Tissue Definition

A

Group of similar cells that carry out specific funtion within an organ

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10
Q

Cell Definition

A

Lowest level at which life exists

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11
Q

Organelle Definition

A

Membrane-Bounded structure that carries out a specific function within a cell

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12
Q

Molecule Definition

A

Group of atoms held together by chemical bonds

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13
Q

Characteristic 2

A

Regulation (Homeostasis)

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14
Q

Regulation Definition

A

Maintain constant internal environment. EX: Feedback mechanisms

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15
Q

Characteristic 3

A

Response to Environment

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16
Q

Response to Environment Definition

A

Respond to stimuli from external environment

17
Q

Characteristic 4

A

Energy Processing

18
Q

Energy Processing Definition

A

Take in materials and use them to build and repair structures

19
Q

Startegies for obtaining energy

A

Autotrophy, Heterotrophy

20
Q

Autotroph

A

Use light / simple chemicals from environment to make food (glucose)

21
Q

Heterotroph

A

Must obtain food from other organisms

22
Q

Food Web Levels

A

Producer, Consumer, Decomposer

23
Q

Producer

A

Provide food for rest of food web

24
Q

Consumer

A

Eat producers or other consumers

25
Q

Decomposer

A

Breaks down dead organic matter, releasing nutrients back into environment

26
Q

Energy Flow

A

Sun > Producers > Consumers > Decomposers

27
Q

Nutrient Flow

A

Inorganic Nutrient Pool > Producers > Consumers > Decomposers > Inorganic Nutrient Pool

28
Q

Characteristic 5

A

Growth & Development

29
Q

Growth

A

Increase in size

30
Q

Development

A

Changes in form and structures throughout life

31
Q

Characteristic 6

A

Reproduction

32
Q

Reproduction

A

Produce offspring. Sexually & Asexually

33
Q

Characteristic 7

A

Evolution

34
Q

Evolution

A

Living things change over time

35
Q

Taxonomy

A

System of classification

36
Q

Why is classification helpful?

A

Helps us to simplify, reduces large and complex systems into smaller, less complex systems

37
Q

Three-Domain System

A

Bacteria, Archaea, Eukarya

38
Q
A

Molecular & Cellular Biology (10 decks)

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