BIOL 100 Quiz: (BIO 100) Exam #1 Study Guide

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Course: BIO 100
Exam #1 Study Guide
Chapter 1: Humans in the World of Biology
(1) What are the characteristics of life?
1. living things contain nucleic acids, proteins, carbohydrates, and lipids
2. living things are composed of cells
(2.1) What are cells?
the smallest units of life
(2.2) What are the two types of cellular organisms?
(1) unicellular organisms- organisms that only have a single cell
(2) multicellular organisms- organisms with trillions of cells
3. living things grow and reproduce
4. living things use energy and raw materials
(4.1) What is a metabolism?
all chemical reactions that occur within the cells of living things
maintains life and allows organisms to grow
5. living things respond to their environment
(5.1) stimulus leads to response
6. living things maintain homeostasis
(6.1) What is homeostasis?
the relatively constant and self-correcting internal environment
of a living organism
7. populations of living things have adaptive traits and evolve
(7.1) What are adaptive traits?
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traits that help it survive and reproduce in its natural
environment
(7.2) this is also known as natural selection
(7.3) What are epiphytes?
plants rooted on the surfaces of other plants
(2) All organisms came from the first cells, but through evolution, diversity arose
(3) Organisms with the greatest similarity are grouped together in domains
(3.1) What are the domains of organisms?
Domain Bacteria
unicellular prokaryotic organisms
Domain Archaea
unicellular prokaryotic organisms
most live in extreme environments
Domain Eukarya
eukaryotic cells that contain a membrane-bound nucleus and
internal compartments (i.e. organelles)
(3.2) What are the kingdoms in the domain eukarya?
1. Protists
protozoans
algae
diatoms
2. Fungi
molds
mushrooms
3. Plants
mosses
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ferns
seed plants
4. Animals
invertebrates
vertebrates
humans are vertebrates
What are vertebrates?
animals with a nerve cord protected
by a backbone
humans are mammals
What are the characteristics of mammals?
we have hair
we feed our young milk produced by
mammary glands
humans are primates
What are the characteristics of primates?
forward-looking eyes
a well-developed brain
opposable thumbs
(4) What is an atom?
a unit of matter that cannot be further broken down
(5) What is a molecule?
the chemical components of cells
(6) What is an organelle?
a component within the cell that carries out specific functions
(7) What is a cell?
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