Finals Flashcards

0
Q

Series of steps that biologists and other scientists use to gather information and answer questions; include observing and hypothesizing, experimenting, and fathering and interpreting results

A

Scientific method

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1
Q

Designing an experiment (hypothesis, control, experiment, conclusion)

A

Experimental design

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2
Q

Group of ecosystems with the same climax communities; biomes on land are called terrestrial, on water are called aquatic

A

Biomes

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3
Q

Organism in a food chain that represents a feeding step in the passage of energy and materials through an ecosystem

A

Trophic levels

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4
Q

Model that expresses all the possible feeding relationships at each trophic level in a community

A

Food web

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5
Q

Organisms that use energy from the sun

A

Autotroph

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6
Q

Consumers

A

Heterotroph

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7
Q

Makes own energy

A

Producer

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8
Q

Orderly, natural changes, and species replacements that take place in ecosystem communities over time

A

Succession (1st and 2nd)

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9
Q

Association of different species

A

Symbiosis

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10
Q

One harms another

A

Parasitism

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11
Q

One benefits, one neither benefits or is harmed

A

Commensalism

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12
Q

Both benefit

A

Mutualism

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13
Q

Number of organisms of one species that an environment can support; populations below increase, above, decrease

A

Carrying capacity

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14
Q

Variety of a life in an area

A

Biodiversity

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15
Q

Occur when predators in a food web suppress the abundance or alter traits of their prey, thereby releasing the next lower trophic level from predation

A

Trophic cascade

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16
Q

The arrangement or spread of people living in a given area

A

Population distribution

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17
Q

Carbon, nitrogen, water, phosphorous cycles

A

Nutrient cycles

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18
Q

+ charged center of an atom, contains protons and neutrons

A

Nucleus

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19
Q

Positively charged particles, inside nucleus

A

Protons

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20
Q

Negatively charged particles in electron cloud

A

Electrons

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21
Q

Neutrally charged particles inside nucleus

A

Neutrons

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22
Q

= protons

A

Atomic number

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23
Q

= protons + neutrons

A

Atomic mass

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24
Chemical bond formed when two atoms combine by sharing electrons
Covalent bond
25
Chemical bond formed by the attractive force between two ions of opposite charge
Ionic bond
26
Atoms of the same element that have different numbers of neutrons in the nucleus
Isotope
27
Special characteristics of water
Polar, transports things, resists temperature changes
28
Movement of particles from higher to an area of lower
Diffusion
29
Diffusion of water across a selectively permeable membrane depending on the concentration of solutes on either side of the membrane
Osmosis
30
Molecule with an unequal distribution of charge, resulting in the molecule hVing a positive end and a negative end
Polar molecule
31
Large, complex polymer essential to all life composed of carbon, hydrogen, oxygen, nitrogen, and usually sulfur; provided structure for tissues and organs and helps carry out cell metabolism
Proteins
32
Main source for the body to gain energy ; carbon, hydrogen, oxygen
Carbohydrates
33
Insulate the body to maintain normal body temp, cushion internal organs for protection
Lipids
34
Complex macromolecules such as rna and DNase, that store genetic information in cells in the form of a code
Nucleic acid
35
Basic building blocks of protein molecules
Amino acids
36
Covalent bond formed between amino acids
Peptide bond
37
Type of protein found in all living things that increases the rate of chemical reactions
Enzyme
38
Unicellular or multicellular organisms such as yeast, plants, and animals, composed of eukaryotic cells, which contain a true nucleus and membrane bound organelles
Eukaryotes
39
Unicellular organisms, such as bacteria, composed of prokaryotic cells. They lack internal membrane bound structures
Prokaryote
40
Membrane bound structures within eukaryotic cells
Organelles
41
Clear, gelatinous fluid inside a cell
Cytoplasm
42
ER is the site of chemical reactions. Areas where ribosomes do not attach to ER
Smooth ER
43
ER has ribosomes attached
Rough ER
44
Membrane bound fluid filled space in the cytoplasm of plant cells used for the temporary storage of materials
Vacuole
45
Eukaryotic membrane bound organelles that transform energy stored in food molecules into atp; has a highly folded inner membrane that produces energy storing molecules
Mitochondria
46
Chlorophyll containing cell organelles found in the cells of green plants and some protists; capture light energy from the sun, which is converted to chemical energy in food molecules
Chloroplasts
47
In eukaryotic cells, the central membrane bound organelle that manages cellular functions and contains DNA
Nucleus
48
Organelles that contain digestive enzymes; digest excess or worn out organelles, food particles, and engulfed viruses or bacteria
Lysosomes
49
Firm, fairly rigid structure located outside the plasma membrane of plants, fungi, most bacteria, and some protists; provides support and protection
Cell wall
50
The boundary between the cell and it's environment, to slow a steady supply of these nutrients to come into the cell no matter what the external conditions are
Cell membrane/ plasma membrane
51
Critical for the formation and function; fatty acid rails are no polar, head of the phosphate is polar
Phospholipid bilateral
52
Homeostasis
The process of maintaining balance within the cell
53
Adaptation
Evolution of a structure, behavior, or internal process that enables an organism to respond to stimuli and better survive in an environment
54
Carbohydrates
Main source for the body to gain energy, make up cell walls in plants
55
Nucleus
Leader of the eukaryotic cell, contains the directions to make proteins
56
Prokaryote
Cells lacking internal membrane bound structures, unicellular organisms, bacteria
57
Ribosomes
Non membrane bound organelles in the nucleus where enzymes and other proteins are assembled
58
Phospholipid bilayer
Two layers of phospholipids back to back (lipids with a phosphate group--phosphorous and oxygen)
59
Compare/contrast plant and animal cells
Animal cells have vacuoles | Plant cells are larger than animal cells, and have cell walls and chloroplasts