HUMAN BIOLOGY CHAPTER 1 EXAM
QUESTIONS AND ANSWERS
organisms levels of organization - Answer-atoms, molecules, cells, tissues, organs,
organ systems, organisms, populations, community, ecosystem and biosphere.
organisms - Answer-take materials and energy from the environment
reproduce
grow and develop
are homeostatic
respond to stimuli
have an evolutionary history and are adapted to a way of life
Humans differ from other mammals by their,... - Answer-highly developed brains
completely upright stance
creative language
ability to use a wide variety of tools
Humans are members of the biosphere - Answer-Humans depend on the biosphere
for its many services, such as, absorption of pollutants, sources of water and food,
prevention of soil erosion, and natural beauty.
The Scientific method - Answer-1. observation
2. hypothesis
3. experiment/ observations
4. conclusion
5. scientific theory
How the cause of Ulcers was discovered - Answer-Dr. Marshall followed Koch's
postulates to show that Heliobacter pylori causes ulcers. When he was unable to
infect an animal with the bacterium, he and another volunteer infected themselves.
His persistence led to clinical studies that showed antibiotics can cure ulcers.
How to do a controlled study - Answer-1. a large number of subjects are divided
randomly into groups;
2. the test group is exposed to an experimental variable;
3. a control group is not exposed to an experimental variable and is given a placebo;
4. all groups are otherwise treated the same, and it is best if the subjects and
technicians do not know what group they are in; and
5. the results and conclusion are published in a scientific journal.
Statistical data - Answer-The standard error tells us how uncertain a particular value
is. The statistical significance tells us how trustworthy the results are. The lower the
statistical significance, the less likely the results are due to chance and the more
likely they are due to the experimental variable.
The total number of species within the biosphere - Answer-biodiversity
QUESTIONS AND ANSWERS
organisms levels of organization - Answer-atoms, molecules, cells, tissues, organs,
organ systems, organisms, populations, community, ecosystem and biosphere.
organisms - Answer-take materials and energy from the environment
reproduce
grow and develop
are homeostatic
respond to stimuli
have an evolutionary history and are adapted to a way of life
Humans differ from other mammals by their,... - Answer-highly developed brains
completely upright stance
creative language
ability to use a wide variety of tools
Humans are members of the biosphere - Answer-Humans depend on the biosphere
for its many services, such as, absorption of pollutants, sources of water and food,
prevention of soil erosion, and natural beauty.
The Scientific method - Answer-1. observation
2. hypothesis
3. experiment/ observations
4. conclusion
5. scientific theory
How the cause of Ulcers was discovered - Answer-Dr. Marshall followed Koch's
postulates to show that Heliobacter pylori causes ulcers. When he was unable to
infect an animal with the bacterium, he and another volunteer infected themselves.
His persistence led to clinical studies that showed antibiotics can cure ulcers.
How to do a controlled study - Answer-1. a large number of subjects are divided
randomly into groups;
2. the test group is exposed to an experimental variable;
3. a control group is not exposed to an experimental variable and is given a placebo;
4. all groups are otherwise treated the same, and it is best if the subjects and
technicians do not know what group they are in; and
5. the results and conclusion are published in a scientific journal.
Statistical data - Answer-The standard error tells us how uncertain a particular value
is. The statistical significance tells us how trustworthy the results are. The lower the
statistical significance, the less likely the results are due to chance and the more
likely they are due to the experimental variable.
The total number of species within the biosphere - Answer-biodiversity
