Terms Glossary Flashcards

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1
Q

Absolute value

A

A bracket function that turns any value within its brackets positive; for example, |3 -5|= | -2|=2

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2
Q

Acid

A

A sour, corrosive chemical that ionizes in water to form H+ ions and has a ph of below 7.0

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3
Q

Adaptation

A

In evolution, a change in form brought about by a mutation that results In an advantage for a organism

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4
Q

Adjective

A

A word that modifies a noun or pronoun

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5
Q

Adverb

A

A word that modifies a verb, adjective, or another adverb

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6
Q

Allele

A

A from of a gene that codes for proteins that produce given traits

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7
Q

Amino acid

A

One of 20 small nitrogen-containing organic acids that serve as a building block for all proteins

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8
Q

Antecedent

A

In grammar the noun to which a pronoun refers

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9
Q

Antibody

A

A blood protein that is made by B cells to bind to foreign antigens that enter the body so they can be eliminated

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10
Q

Antigen

A

A toxin or foreign substance that produces an immune response in the body

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11
Q

Artery

A

A blood vessel that carries blood away from the heart

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12
Q

Atom

A

The fundamental unit of matter that makes up the 118 different elements, or forms of matter; An atom consist of a central nucleus containing protons, neutrons, and other outer electrons

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13
Q

Atomic mass

A

The mass of a single atom, usually expressed in atomic mass units (amu)

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14
Q

Atomic number

A

The number that identifies a particular element on the periodic table; it tells how many protons and electrons that atom has

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15
Q

Atomic radius

A

The distance from an atom’s nucleus to its outermost electron

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16
Q

atrium

A

One of the top chambers of the heart that receives blood from the body

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17
Q

Axon

A

The long thin, conductive part of the neuron that conducts impulses away from the neuron cell body

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18
Q

B- cells

A

A type of white blood cell that produces antibodies

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19
Q

Base

A

A chemical that produces OH -1 ions in solution, has a pH of greater than 7.0, and reacts with acids

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20
Q

Bases

A

One of the four “alphabet letters “ that make up the genetic code for DNA: A ( adenine) T ( thymine) C (cytosine) and G ( guanine)

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21
Q

Battery

A

An electrochemical cell; technically, a battery is more than one cell connected in series

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22
Q

Bias

A

A prejudice that is typically based on a faulty opinion

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23
Q

Biome

A

One of the earths major biological regions; for example grassland, tundra, or desert

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24
Q

Biotic

A

A factor in an ecosystem that is biological in origin such as plants animals fungus

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25
Q

Capillary

A

A very tiny blood vessel that can be either an artery or a vein

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26
Q

Cell

A

The basic biological unit of all living things

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27
Q

Cellular respiration

A

The process of cells burning oxygen to obtain energy and giving off carbon dioxide as waste product

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28
Q

Central nervous system

A

The part of the nervous system that includes the brain and spinal cord

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29
Q

Chemical change

A

A change in the composition of atoms or molecules as a result of a chemical reaction; for example, when H20 is broken into H 2 and O 2 , the composition of atoms has changed

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30
Q

Chromosomes

A

Structures in the cell nucleus that are made of DNA and contain the genetic code for an organism; humans have 23 pairs of chromosomes

31
Q

Circuit

A

An electrical system in which current flows in a circular path

32
Q

Circulatory system

A

The body system that includes the heart and blood vessels

33
Q

Clause

A

A group of words that include a noun and verb

34
Q

Community

A

All of the different species of organisms that exist in a particular area of the ecosystem

35
Q

Compound

A

A pure substance such as methane (CH4) or water ( H2O) that is made up of two or more elements

36
Q

Concentration

A

The amount of solute that is dissolved in a solution with a high concentration has a large amount of solute dissolved

37
Q

Consumers

A

Biological organisms that cannot make their own food, such as animals or fungi

38
Q

Covalent bonds

A

Chemical bonds in which electrons are shared equally

39
Q

Dendrites

A

The parts of a neuron that receive input from other neurons

40
Q

Diabetes

A

A disease in which the body does not secrete a sufficient amount of insulin into the bloodstream and the body cells become starved because they cannot take in glucose

41
Q

Diffusion

A

The process in which material flows from a more concentrated area to a area that’s less concentrated

42
Q

Digestive system

A

The body s

43
Q

ABiotic

A

The nonbiological factors in an ecosystem such as air, water, soil, and rock

44
Q

Displacement

A

A change of position typically the result of movement

45
Q

DNA

A

A genetic molecule that makes up chromosomes in the cell and forms the genetic code DNA transmits information for the proteins that help carry out all important life processes

46
Q

Dominant

A

In genetics an allele with a trait that prevails when it is present and the other allele is recessive

47
Q

Ecosystem

A

An environment that includes both biotic and abiotic ( air, soil, water, ) factors

48
Q

Electric current

A

Is the movement of electrons

49
Q

Electron negativity

A

The tendency of an atom to attract electrons

50
Q

Electrons

A

Negatively charged fundamental particles that exist outside of the nucleus of every atom

51
Q

Element

A

A substance such as carbon nickel or chlorine that is made of a single type of atom

52
Q

Embryo

A

A growing organism that is incomplete and unborn

53
Q

Endocrine

A

Pertaining to hormones that secrete internally into the blood stream

54
Q

Endothermic

A

A reaction that takes in energy

55
Q

Energy

A

The ability to do work

56
Q

Enzyme

A

A protein that facilitates a chemical reaction

57
Q

Evolution

A

The process by which biological organisms change in form over time because of adaptations that produce different levels of survivability within an environment

58
Q

Excretory system

A

The body system that removes cellular waste that is expelled from the body after being processed in the kidneys

59
Q

Exothermic

A

A reaction that gives off energy

60
Q

F = ma

A

An expression of Newton’s second law in which force ( F) is equal to mass (m) times acceleration (a)

61
Q

Gas

A

The state of matter in which atoms or molecules move freely as a fluid and fill up any space that they inhabit

62
Q

Gene

A

A section of a chromosome typically a gene codes for particular protein

63
Q

Genotype

A

The genetic makeup of an organism with regard to its alleles an organism with dominant and recessive “T” and “S” genes might have genotype TtSs or ttSs among others

64
Q

Glomerulus

A

A functional unit of the kidney that controls excretion

65
Q

Homeostasis

A

The tendency of an organism to find a safe stable for all body functions within its internal environment

66
Q

Hypertonic

A

An area in which matter is concentrated and tends to diffuse to a less concentrated area

67
Q

Hypotonic

A

An area in which a substance is less concentrated a substance that tends to diffuse into hypotonic area from an area of higher concentration

68
Q

Impulse

A

Force applied over a period of time

69
Q

Liquid

A

The state of matter in which particles are attracted but still can move somewhat freely

70
Q

Litmus paper

A

Paper used to determine the pH acidity of a chemical blue litmus paper turns red in an acid and red litmus paper turns blue in a base

71
Q

Meiosis

A

A type of cell division in which gametes
( egg and sperm cells ) are formed that have only a single set ( 1 n) of chromosomes rather than the normal double (2 n) set of chromosomes that all other body cells have

72
Q

Mitosis

A

Process in which cells divide to grow

73
Q

Molarity

A

The number of moles of a chemical per liter of solution a solution of 2M contains 2 moles of the chemical for every liter of solution

74
Q

Mutation

A

A mistake in the copying of DNA that usually results in faulty proteins that are lethal but can sometimes result in beneficial adaptations