Chapter 1 Flashcards

1
Q

Biology

A

Study of life/living things

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2
Q

six kingdoms of organisms

A

Archaea, bacteria, protista, fungi, plantea, and animalia

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3
Q

Archaea

A

Kingdom of prokaryotes includes this methanogen, which manufactures methane.
(simple cells that do not have nuclei)

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4
Q

Bacteria

A

This group is the second of the two prokaryotic kingdoms.

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5
Q

Two kingdoms that belong to prokaryotes groups

A

Archaea and bacteria

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6
Q

Protista

A

Include most of the unicellular eukaryotes as well as multicellular algea
Whose cells contain a nucleus

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7
Q

Fungi

A

Contains nonphotosynthetic organisms, mostly multicellular

**These kingdoms digest their food externally such as mushrooms

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8
Q

Plantea

A

Contains photosynthetic multicellular organisms that are primarily terrestrial, such as flowering plants

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9
Q

Animalia

A

nonphotosynthetic multicellular organisms that digest their food internally such as a mountain goat

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10
Q

different ways to study the diversity of life

A

Live with gorillas, collect fossils, listen to whales, etc…, isolate bacteria, grow mushrooms and examine the structure of fruit flies, read messages encoded in the long molecules of heredity

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11
Q

Note***

A

the living world is very diverse, but all organisms share key properties. However each kingdom is profoundly different

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12
Q

Note***

A

All living things posses cells that carry out metabolism, mantain stable internal conditions, reproduce, and use dna to transmit hereditary informationto offspring

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13
Q

Five basic properties that are shared by living things

A
Cellular orgainzations
Metabolism
homeostasis
Growth and reproduction
Heredity
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14
Q

Cellular organization

A

all living things are composed of one or more cells

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15
Q

Membrane

A

A tiny compartment with a thin covering

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16
Q

Note***

A

Some cells have simple interiors, while others are complexly organized, but ALL are able to grow and reproduce

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17
Q

Note***

A

A human body can contain 10-100 trillion cells

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18
Q

Metabolism

A

The transfer of energy from one form to another in cells. All living things use energy, captured from sunlight by plants, algae, and certain bacteria through photosynthesis. to get energy that powers our lives, we extract it from plants or from animals that eat plants or that eat plant-eating animals

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19
Q

Notes* ex

A

A kingfisher bird obtains the the energy it needs to move, grow, and carry out its body processes by eating fish that eat algae. The bird metabolizes this food using chemical processes that occur within cells

20
Q

ATP

21
Q

Homeostasis

A

All living things maintain stable internal conditions so that their complex processes can be better coordinated

22
Q

Note** Homeostasis

A

Your body will try to maintain an internal temperature of around 37C/98.6F reguardless of how hot or cold the weather may be

23
Q

Growth and reproduction

A

All living things grow and reproduce. Bacteria will split into two as it increases in size approx every 15 minutes. More complex organisms grow by increasing the number of cells and reproduce sexually by producing gametes that combine giving rise to offspring

24
Q

Note***

A

The Bristlecone pine of california have reproduced after 4.600 years by increasing the number of cells and reproducing via gametes

25
Heredity
All organism posses a genetic system that is based on a long molecule called DNA The info that determines what an individual organism will be like is contained in a code that is dictated by the order of the subunits making up the DNA molecules
26
Gene
Each set of instructions within the DNA
27
DNA
Deoxyribonucleic Acid--a long molecule that includes the genetic system GET INFO
28
Hierarchy of increasing complexity | Complexity of life at three levels
Cellular level Organismal level Populational level
29
Cellular level from smallest to largest
``` Atoms Molecules Macromolecules organelles cells ```
30
Atoms
The fundmental elements of matter | ie: hydrogen, carbon, and nitrogen
31
Molecules
Atoms that are joined together into complex clusters | ie: Adenine
32
Macromolecules
Large complex molecules such as DNA that stores hereditary info ieDNA
33
Organelles
Complex bilogical colecules that are assembled into tiny compartments within cells such as nucleus within which the cell's DNA is stored ie: nucleus
34
Cells
Organelles and other elements that are assembled into membrane-bounded units Cells are the smallest level of organization that can be considered alive ie: Nerve cell
35
What is the smallest level of organization that can be considered "alive"
Cells
36
Four levels in organismal level
Tissues Organs Organ systems Organism
37
Tissues
Groups of similar cells that act as a functional unit * *the most basic level ie: nerve tissue composed of cells called neurons that carry electrical signals
38
Organs
grouped tissues which are body structures composed of several different tissues that form a structural and functional unit ie: your brain is an organ composed of nerve cells and a variety of connective tissues that form protective coverings and distribute blood
39
Organ System
Organs that are grouped into organ systems ie: The nervous system which consist of sensory organs, the brain and spinal cord, neurons that convey signals throughout the body, and supporting cells
40
Organism
organ systems that function together to form an organism | ie: A duck
41
Four levels in a population level
Population Species Community Ecosystem
42
Population
a group of organisms of the same species living in the same place ie: A flock of geese living together on a pond
43
Species
All the populations of a particular kind of organsim together form a species. Its members similar in appearence and able to interbreed. ie: All Canadain geese, whether found in Minnesota, Wisconsin, or Canada are basically the same members of the species Branta Canadensis Sandhill cranes are a different species
44
Branta Canadensis
Canadien Geese
45
Community
A higher level of biological organization. A communtiy living in the same place but are not similar in species ie: Geese living on the same pond with ducks, insects, and fish
46
Ecosystem
The highest tier of the biological organization, a biological community and the soil and water within which it lives together consitutes an ecological system or ecosystem
47
Emergent Properties
At each higher level in the living heirarchy, novel properties emerg, properties that were not present at the simpler level of organization. GET INFO