Untitled Deck Flashcards

1
Q

Definition of biology

A

The scientific study of life

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2
Q

7 processes all organisms share

A

Regulation
Reproduction
Evolutionary Adaption
Growth and Development
Response to environment
Order
Energy Processing

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3
Q

Five general themes (Biology)

A

Organization
Information
Energy and Matter
Interactions
Evolution

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4
Q

12 levels of biological organization

A

Biosphere
Ecosystem
Community
Population
Organism
Organ System
Organ
Tissue
Cell
Organelle
Molecule
Atom

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5
Q

Cell definition

A

Smallest unit of life that can perform all activities required for life

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6
Q

Prokaryotic cells are

A

Smaller and unicellular

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7
Q

Eukaryotic cells are

A

Larger, complex (because they contain organelles), and multicellular

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8
Q

Gene definition

A

sequence of DNA in a chromosome that is the unit of inheritance

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9
Q

Core theme of biology

A

Evolution

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10
Q

The eight Linnaean taxa

A

Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

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11
Q

Three domains of organisms

A

Bacteria
Archea
Eukarya

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12
Q

Darwin refers to evolution as “Decent with ______”

A

Modification

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13
Q

The times an experiment is completely repeated

A

Sample size

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14
Q

A statement based on repeated experimental observations. It is assumed to be true.

A

Scientific Law

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15
Q

A broad explanation that is supported by a large body of evidence. Usually assumed to be true

A

Scientific theory

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16
Q

Applying scientific knowledge for some specific purpose

A

Technology

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17
Q

Number of elements on the periodic table

A

118

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18
Q

Number of naturally occurring elements on the periodic table

A

92

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19
Q

Protons charge

A

Positive

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20
Q

Neutrons Charge

A

No charge

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21
Q

Electrons Charge

22
Q

An atom’s mass is determined by the number of

A

Protons and neutrons

23
Q

Estimate of the mass of an average atom of an element is the

A

Atomic number

24
Q

Isotope

A

an atomic form of an element with a specific number of neutrons

25
Radioactive isotopes
The nuclei of some isotopes of some elements spontaneously decay more than others
26
Half-life
The time it takes for 50% of a sample to radioactively decay
27
An orbital
The 3-D space an electron is in 90% of the time
28
Chemical Bonds
What the formation and function of molecules depends on / Strong bonds that involve sharing electrons
29
Molecule
Two or more atoms held together by a covalent bond
30
Compound
Two or more atoms of different elements bonded together
31
Nonpolar molecules
Share electrons evenly
32
Polar covalent molecules
Share electrons unevenly
33
Cations are
Positive
34
Anions are
Negative
35
Kinetic energy is the energy of
Movement
36
Thermal Energy
The kinetic energy associated by the random movement of molecules
37
Temperature is a measure of
Thermal energy
38
The solvent of life
Water
39
_____ substances are hydrophilic
Polar
40
_____ substances are hydrophobic
Nonpolar
41
Compounds with the same number of atoms of elements but different structures and properties
Isomers
42
Three classes of life's organic compounds (macromolecules) that are polymers
Carbohydrates Proteins Nucleic Acid
43
The fourth classes of life's organic compounds, not a polymer
Lipid
44
Macromolecule that serves as fuel and building materials
Carbohydrates
45
Monomer for Carbohydrates
Monosaccharides
46
Three general types of lipids
Steroids Phospholipids Fats
47
What kind of chemical reactions join monomers
Dehydration
48
What kind of chemical reactions disassemble polymers
Hydrolysis
49
An atoms chemical behavior is determined by the distribution of
Electrons in the valence shell
50
What is the two step process that forms ionic bonds
1) Transfer of electrons makes anions and cations 2) Opposite charges attract so anions and cations form bonds
51
In non polar covalent bonds between hydrogen and highly electronegative atoms the hydrogen gets slight positive charge. It's attracted to negatively charged atoms.
Hydrogen bonds
52