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Biology > biology quest 1 > Flashcards

biology quest 1 Flashcards

1
Q

characteristics of life

A

organization and cells, reproduction, homeostasis, metabolism, growth and development, change through time, response to stimuli

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2
Q

organization and cells

A

unicellular or multicellular (cells, tissues, organs, organ systems, organisms)

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3
Q

reproduction

A

sexual or asexual

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4
Q

homeostasis

A

maintain stable internal conditions

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5
Q

metabolism

A

take in and transform energy and materials from env.

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6
Q

growth and development

A

change in size and form (sometimes metamorphosis)

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7
Q

change through time

A

evolution via natural selection

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8
Q

response to stimuli

A

interaction with env. (an organisms reaction or response to chemical or physical change in env.)

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9
Q

diversity

A

variety of species

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10
Q

unity

A

genetic code/dna

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11
Q

tree of life

A

(domains and kingdoms) common ancestor-bacteria, archea and eukaryota (eukaryota- fungi, plantae and animalia) (archea- archea) (bacteria- bacteria)

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12
Q

evolution

A

characteristics of a pop of animals that changes over time (Descent with modification)

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13
Q

natural selection

A

organisms that have favorable traits are more likely to survive and reproduce)

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14
Q

adaptation

A

product of natural selection (favorable traits that are passed down)

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15
Q

three unifying themes in biology

A

the diversity and unity of life, interdependance of living things and the evolution of life

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16
Q

organs

A

structures that carry out specialized jobs within an organ system

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17
Q

tissues

A

group of cells that have similar abilities and allow the organ to function

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18
Q

organelles

A

tiny structures that carry out functions necessary for the cell to stay alive

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19
Q

magnification

A

makes object larger

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20
Q

resolution

A

power to show details clearly

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21
Q

leeuwenhoek

A

first to see alive cell (bacteria)

22
Q

hooke

A

first person to see cells (under microscope) they were dead- cork cells; coined the word cell

23
Q

matter

A

anything that takes up space and has mass

24
Q

mass

A

quantity of matter that an object has

25
Q

weight

A

depends on gravity

26
Q

atom

A

basic building blocks of matter

27
Q

nucleus

A

center

28
Q

orbital

A

energy levels/electron shell

29
Q

element

A

pure substance made up of only one kind of atom

30
Q

isotope

A

same element but has different amt of neutrons (unstable and radioactive)

31
Q

compound

A

2 or more different elements bonded in a fixed proportion

32
Q

ionic

A

type of bonding of elements (transfer of electrons)

33
Q

ion

A

element that has either lost or gained electron(s) will have a charge

34
Q

molecule

A

2 or more atoms (can be same element or different) bound in a fixed proportion (covalently)

35
Q

covalent

A

shared electrons

36
Q

polar

A

when electrons aren’t shared evenly; uneven distribution of electrical charge (slight charge)

37
Q

adhesion

A

when water sticks to unlike surfaces ie) glass

38
Q

cohesion

A

when water sticks to itself

39
Q

capillary action

A

water “climbs” up a tube (attracted to itself and the sides of the tube)

40
Q

solutions

A

homogeneous mixtures- particles are uniformly distributed

41
Q

solute

A

substance being dissolved (lesser amt)

42
Q

concentration

A

amt. of solute being dissolved in solution

43
Q

saturated solution

A

solution where no more solute can be dissolved

44
Q

aqueous solution

A

water based solutions

45
Q

mixtures

A

heterogeneous- particles aren’t uniformly distributed

46
Q

acids

A

release H+/(H3)O+ into solution (sour)

47
Q

base

A

releases OH- (hydroxide ion) into solution (bitter and slimy)

48
Q

ionization of water

A

(H2)O molecules in solution bounce off each other which causes them to come apart (dissociate) (water becomes H+ and OH-) (H+ and water becomes (H3)O+

49
Q

PH scale

A

(power of hydrogen) bases will be higher on the scale (>7) b/c they have a greater OH- concentration; acids are lower (greater H+/(H3)O+ concentration)

50
Q

buffers

A

substances that can neutralize small amts of acids or bases (ex: limestone or marble)

Biology (10 decks)

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