Chapter 1- Living Things Flashcards

0
Q

Cell

A

Basic unit of structure & function made in living things

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1
Q

Organism

A

A living thing

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2
Q

Unicellular

A

Made of a single cell

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3
Q

Multicellular

A

Consists of many cells

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4
Q

Development

A

The process of change that occurs during an organisms life to produce a more complex organism

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5
Q

Stimulus

A

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

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6
Q

Response

A

an action or change I’m behavior that occurs as a result of a stimulus

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7
Q

Metabolism

A

Combination of chemical reactions through which an organism builds up or breaks down

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8
Q

Spontaneous generation

A

The mistaken idea that living things arise from nonliving sources

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9
Q

Controlled experiment

A

An experiment in which only one variable is manipulated at a time

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10
Q

Asexual reproduction

A

A reproductive process that involves only one parent and produces offspring that are genetically identical to the parent.

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11
Q

Autotroph

A

An organism that is able to capture energy from sunlight or chemicals and use it to produce its own food.

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12
Q

Heterotroph

A

An organism that cannot make its own food and gets food by consuming other living things.

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13
Q

Sexual reproduction

A

A reproductive process that involves two parents that combine their genetic material to produce a new organism which differs from both parents.

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14
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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15
Q

Classification

A

The process of grouping things based on their similarities.

16
Q

Taxonomy

A

The scientific study of how living things are classified.

17
Q

Binomial nomenclature

A

The classification system in which each organism is given a unique, two-part scientific name indicating its genus and species.

18
Q

Genus

A

A classification grouping that consists of a number of similar, closely related species.

19
Q

Species

A

A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.

20
Q

Evolution

A

Change over time; the process by which modern organisms have descended from ancient organisms.

21
Q

Branching tree

A

A diagram that shows probable evolutionary relationships among organisms and the order in which specific characteristics may have evolved.

22
Q

convergent evolution

A

The process by which unrelated organisms evolve similar characteristics.

23
Q

Nucleus

A

In cells, a large oval organelle that contains the cell’s genetic material in the form of DNA and controls many of the cell’s activities.

24
Q

Prokaryote

A

A unicellular organism that lacks a nucleus and some other cell structures.

25
Q

Eukaryote

A

An organism whose cells contain a nucleus.

26
Q

Shared derived characteristic

A

Trait that similar organisms share indicating common ancestor