Human Biology - Ch. 1 Intro to Human Biology
Study online at https://quizlet.com/_joau98
1. Atoms The basic units of a chemical element and the smallest unit of
all things. Join together to make a molecule
2. Molecules Molecules join together to make up a cell
3. Multicellular Made up of many cells like animals and plants
4. Tissue Group of similar cells that preform a particular function
5. Organs Several types of tissue. These also belongs to an organ sys-
tem.
6. Organ System A group of organs that work together in performing vital body
functions
7. Species group of interbreeding organisms
8. Population Group of interbreeding organisms of the same species that
live in a given area
9. Organism Any living thing that has a collection of organ systems
10. Community The interaction of all organisms (more than one population)
living in an area
11. Ecosystem A community of populations interacting with that abiotic en-
vironment
12. Biosphere All of the ecosystems on earth where life exists
13. Levels of organization
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, Human Biology - Ch. 1 Intro to Human Biology
Study online at https://quizlet.com/_joau98
14. Why must we consume? To acquire materials and energy or nutrient molecules in food
to maintain organization of the cells and of the organisms
15. Characteristics of Life - Reproduction and growth
- Take in materials and energy
-Made of cells
- Homeostasis
- Sense and Responsd to internal and external stimuli
- Evolutionary history through which organisms change
(evolve)
16. Reproduce To create a copy of themselves through DNA, which contains
hereditary information, and ensure the continuance of their
own kind
17. Homeostasis process by which organisms maintain a relatively stable inter-
nal environment for cells through the workings of the organ
system
18. Examples of homeostasis - We shiver when cold to generate heat and maintain internal
body temp
- We sweat when hot to decrease internal body temp
- Respiratory system exchanges gasses with environment
- Cardiovascular system distributes nutrients and oxygen to
the cells and picks up their waste
- Nervous system and endocrine systems coordinate the
2/6
Study online at https://quizlet.com/_joau98
1. Atoms The basic units of a chemical element and the smallest unit of
all things. Join together to make a molecule
2. Molecules Molecules join together to make up a cell
3. Multicellular Made up of many cells like animals and plants
4. Tissue Group of similar cells that preform a particular function
5. Organs Several types of tissue. These also belongs to an organ sys-
tem.
6. Organ System A group of organs that work together in performing vital body
functions
7. Species group of interbreeding organisms
8. Population Group of interbreeding organisms of the same species that
live in a given area
9. Organism Any living thing that has a collection of organ systems
10. Community The interaction of all organisms (more than one population)
living in an area
11. Ecosystem A community of populations interacting with that abiotic en-
vironment
12. Biosphere All of the ecosystems on earth where life exists
13. Levels of organization
1/6
, Human Biology - Ch. 1 Intro to Human Biology
Study online at https://quizlet.com/_joau98
14. Why must we consume? To acquire materials and energy or nutrient molecules in food
to maintain organization of the cells and of the organisms
15. Characteristics of Life - Reproduction and growth
- Take in materials and energy
-Made of cells
- Homeostasis
- Sense and Responsd to internal and external stimuli
- Evolutionary history through which organisms change
(evolve)
16. Reproduce To create a copy of themselves through DNA, which contains
hereditary information, and ensure the continuance of their
own kind
17. Homeostasis process by which organisms maintain a relatively stable inter-
nal environment for cells through the workings of the organ
system
18. Examples of homeostasis - We shiver when cold to generate heat and maintain internal
body temp
- We sweat when hot to decrease internal body temp
- Respiratory system exchanges gasses with environment
- Cardiovascular system distributes nutrients and oxygen to
the cells and picks up their waste
- Nervous system and endocrine systems coordinate the
2/6
