Living Things #1 Flashcards

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1
Q

Autotroph

A

An organism that uses the sun’s energy to convert water and gas into food.

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2
Q

Heterotroph

A

An organism that cannot make its own food; a consumer.

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3
Q

Characteristic

A

A feature that helps to identify something.

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4
Q

Organism

A

A living thing.

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5
Q

Cell

A

basic unit of structure and function in living things.

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6
Q

Unicellular

A

Made of a single cell.

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7
Q

Multicellular

A

Consisting of many cells

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8
Q

Stimulus

A

Any change or signal in the environment.

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9
Q

Response

A

An action or change in behavior that occurs as a result of a stimulus.

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10
Q

Spontaneous generation

A

The mistaken idea that living things arise from nonliving sources.

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11
Q

Homeostasis

A

The condition in which an organism’s internal environment is kept stable in spite of changes in the external environment.

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12
Q

Species

A

A species is a group of similar organism that can produce that can also mate and reproduce.

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13
Q

Classification

A

Classification is the process of grouping things based on there similarities.

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14
Q

Taxonomy

A

The study of how living are classified

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15
Q

Domain

A

The most basic level of organization in the classification of organisms.

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16
Q

Evolution

A

Change over time; the process by which modern organisms have descend from accent ones.

17
Q

Virus

A

A tiny, nonliving particle that enters and then reproduces inside a living cell.

18
Q

Host

A

An organism that a parasite lives with, in, or on and provides a source of energy or a suitable environment for the parasite to live.

19
Q

Vaccine

A

A substance used in a vaccination that consists of pathogens that have been weakened or killed but can still trigger the body to produce chemicals that destroy the pathogens.

20
Q

Bacteria

A

Single-celled organisms that lack a nucleus; prokaryotes.

21
Q

Protist

A

A eukaryotic organism that cannot be classified as plant, animal, or fungus.

22
Q

Parasite

A

An organism that benefits by living with, on, or in a host in a parasitism interaction.

23
Q

Resistant

A

Not affected, harmed, or destroyed by something.

24
Q

Tissue

A

A group of similar cells that perform that perform a specific action

25
Q

Vascular plants

A

A plant that has true vascular tissue for transporting materials.

26
Q

Nonvascular plants

A

A low-growing plant that lacks true vascular tissue for transporting materials.

27
Q

Vertebrate

A

An animal with a backbone.

28
Q

Invertebrate

A

An animal without a backbone.

29
Q

Organ

A

A body structure that is composed of different kinds of tissues that work together.

30
Q

Mammal

A

A vertebrate whose body temperature is regulated by its internal heat, and that had skin covered with hair or fur and glands that produce milk to feed its young.

31
Q

Symmetry

A

Having the characteristic of having closely identical feature on both sides of an imaginary center dividing line.