The Principles of Biology Exam 1 Questions
with Answers
What are the three domains of all life on earth? - -1. Bacteria
-They are single celled, meaning they are prokaryotic cells
-No nucleus
2. Archaea
-Live in extreme conditions and that includes the level of the ocean where sunlight is weak
-They are single celled, meaning they are prokaryotic cells
-No nucleus
3. EuKaryotic
-They have a nucleus, meaning they are multi celled.
-And they are basically the Protista, Plants, Animals, and Fungi
-Which domains have only single-celled microbes? - -1. Bacteria
2. Archaea
-What don't those cells have that the other domain's cells do? - -The prokaryotes don't
have nucleus and other organelles
-What are the four kingdoms in Domain Eukarya? - -1. Protista
2. Plantae
3. Animalia
4. Fungi
-Which kingdom gave rise to the other three kingdoms? - -Protista-Because organisms in
this one are similar to the other kingdoms. It also has a mix of life forms, unicellular
(prokaryotic) and multicellular (Eukaryotic)
-What is science? - -Science is a body of knowledge; a collection of unified insights about
nature, the evidence for which is an array of facts.
-What is a theory in science? - -It is a general set of principles, supported by evidence, that
explains some aspect of nature
-This knowledge is built over years. It can be used as a predictive tool to test hypotheses
Three theories:
1. Atomic theory-The structure of a atom
2. Cell Theory
3. Evolution Theory
, -What is the atomic theory? - -It's the theory that states that atoms are made up of three
particles; the nucleus and the protons ( + charge) at the center orbited by any number of
electrons (- charge)
-What is the cell theory? - -It's the theory that states that cells are the smallest units of life
and that cells come from other cells
-What is the theory of evolution? - -It's the theory that states living things gradually
modify over time sometimes resulting in the development of new species
-Give the parts of the Scientific method - -1. Observation-Initial questioning of nature
-scientists are skeptics which lead to inquires
2. Hypothesis-Precise statement to test or experiment (you have to be able to test it)
3. Conclusion-If one can be reached it is drawn solely from the test or experiment
-Define a hypothesis and give an example - -A tentative statement we want to test about
nature
-It's a statement that could be true and it has to be testable
Example-A hypothesis about how much sunlight and water certain plants need to bloom
-Give three characteristics of Science - -1. Statements are challenged and revisited
continually
-scientists are skeptics which leads to inquires
2. Hypotheses have to be shown as true or false
3. Natural phenomena have natural explanations, and the human mind is capable of
understanding these
-Aristotle
-Biology is the study of life. Give 8 characteristics of life. - -1. Assimilate energy
2. Respond to their environment
3. Maintain a relatively constant internal environment
4. Reproduce
5. Possess an inherited information base, encoded in the DNA
6. Are composed of one or more cells
7. Are evolved from other living things
8. Are highly organized to inanimate (nonmoving) objects
-Life can also be looked at as a hierarchy. Describe that hierarchy. - -1. Atom (hydrogen)
2. Molecule (water)
3. Organelle (nucleus)
4. Cell (neuron)
5. Tissue (nervous tissue)
6. Organ (brain)
7. Organ system (respiratory system)
8. Organism (sea lion)
9. Population (colony)
with Answers
What are the three domains of all life on earth? - -1. Bacteria
-They are single celled, meaning they are prokaryotic cells
-No nucleus
2. Archaea
-Live in extreme conditions and that includes the level of the ocean where sunlight is weak
-They are single celled, meaning they are prokaryotic cells
-No nucleus
3. EuKaryotic
-They have a nucleus, meaning they are multi celled.
-And they are basically the Protista, Plants, Animals, and Fungi
-Which domains have only single-celled microbes? - -1. Bacteria
2. Archaea
-What don't those cells have that the other domain's cells do? - -The prokaryotes don't
have nucleus and other organelles
-What are the four kingdoms in Domain Eukarya? - -1. Protista
2. Plantae
3. Animalia
4. Fungi
-Which kingdom gave rise to the other three kingdoms? - -Protista-Because organisms in
this one are similar to the other kingdoms. It also has a mix of life forms, unicellular
(prokaryotic) and multicellular (Eukaryotic)
-What is science? - -Science is a body of knowledge; a collection of unified insights about
nature, the evidence for which is an array of facts.
-What is a theory in science? - -It is a general set of principles, supported by evidence, that
explains some aspect of nature
-This knowledge is built over years. It can be used as a predictive tool to test hypotheses
Three theories:
1. Atomic theory-The structure of a atom
2. Cell Theory
3. Evolution Theory
, -What is the atomic theory? - -It's the theory that states that atoms are made up of three
particles; the nucleus and the protons ( + charge) at the center orbited by any number of
electrons (- charge)
-What is the cell theory? - -It's the theory that states that cells are the smallest units of life
and that cells come from other cells
-What is the theory of evolution? - -It's the theory that states living things gradually
modify over time sometimes resulting in the development of new species
-Give the parts of the Scientific method - -1. Observation-Initial questioning of nature
-scientists are skeptics which lead to inquires
2. Hypothesis-Precise statement to test or experiment (you have to be able to test it)
3. Conclusion-If one can be reached it is drawn solely from the test or experiment
-Define a hypothesis and give an example - -A tentative statement we want to test about
nature
-It's a statement that could be true and it has to be testable
Example-A hypothesis about how much sunlight and water certain plants need to bloom
-Give three characteristics of Science - -1. Statements are challenged and revisited
continually
-scientists are skeptics which leads to inquires
2. Hypotheses have to be shown as true or false
3. Natural phenomena have natural explanations, and the human mind is capable of
understanding these
-Aristotle
-Biology is the study of life. Give 8 characteristics of life. - -1. Assimilate energy
2. Respond to their environment
3. Maintain a relatively constant internal environment
4. Reproduce
5. Possess an inherited information base, encoded in the DNA
6. Are composed of one or more cells
7. Are evolved from other living things
8. Are highly organized to inanimate (nonmoving) objects
-Life can also be looked at as a hierarchy. Describe that hierarchy. - -1. Atom (hydrogen)
2. Molecule (water)
3. Organelle (nucleus)
4. Cell (neuron)
5. Tissue (nervous tissue)
6. Organ (brain)
7. Organ system (respiratory system)
8. Organism (sea lion)
9. Population (colony)
