Biology 107 Exam Questions and Answers 100% Solved
The scientific method 1. Observe and formulate question
2. Form a hypothesis: a possible explanation for the research question.
3. Make an experiment: Controlled vs Comparative
4. Measure and collect data
5. Analyze data to form conclusion
What is a controlled experiment? One or more variables are being manipulated and
tested.
Independent Variable FACTOR being controlled.
Dependent Variable RESPONSE that is being tested.
What is a comparative experiment? Compares unmanipulated data gathered from
different sources.
What has to be true for something to be considered a living organism? 1. Made up of
cells
2. Undergo Metabolism
3. Respond to External environments
4. Maintain homeostasis
,5. Reproduce
6. Evolve
What is metabolism? biochemical reactions that convert energy from one form to
another to allow organisms to grow, reproduce, etc. And also is the sum total of all chemical
reactions occurring in a biological system at a given time.
What is homeostasis? maintain relatively stable and constant internal environment.
What is evolution? Changes in the genetic makeup of biological population through time.
What is Natural selection? differential survival and reproduction among individuals in a
population.
what are the two ways evolution can occur? 1. Mutations: create new VERSIONS of
genes
2. Reproduction: create new COMBINATIONS of genes.
Mutation vs reproduction? what is the difference? Mutations create new VERSIONS of
genes
and Reproduction create new COMBINATIONS of genes
, Name the "building blocks" of living organisms. (smallest to largest) Atom (smallest),
molecule, macromolecule, cell, organism (largest)
What is matter? Matter has volume (takes up space) and mass (substance)
e.g. Table, computer, book, me
What is matter made up of? Atoms
What makes up an atom? 1. Protons (positive charge)
2. Neutrons (neutral charge)
3. Electrons (negative charge)
A Bohr model is .. a depiction of an atom. It contains the protons and neutrons in the
middle and the electrons are surrounding it.
The mass # is equal to?
The Atomic # is equal to? The mass number is equal to Protons and neutrons since
neutrons and protons make up the nucleus.
The atomic number is equal to the number of protons.
What is empty space? (non -matter) it has no volume (does not take up space)
no mass (no substance)
The scientific method 1. Observe and formulate question
2. Form a hypothesis: a possible explanation for the research question.
3. Make an experiment: Controlled vs Comparative
4. Measure and collect data
5. Analyze data to form conclusion
What is a controlled experiment? One or more variables are being manipulated and
tested.
Independent Variable FACTOR being controlled.
Dependent Variable RESPONSE that is being tested.
What is a comparative experiment? Compares unmanipulated data gathered from
different sources.
What has to be true for something to be considered a living organism? 1. Made up of
cells
2. Undergo Metabolism
3. Respond to External environments
4. Maintain homeostasis
,5. Reproduce
6. Evolve
What is metabolism? biochemical reactions that convert energy from one form to
another to allow organisms to grow, reproduce, etc. And also is the sum total of all chemical
reactions occurring in a biological system at a given time.
What is homeostasis? maintain relatively stable and constant internal environment.
What is evolution? Changes in the genetic makeup of biological population through time.
What is Natural selection? differential survival and reproduction among individuals in a
population.
what are the two ways evolution can occur? 1. Mutations: create new VERSIONS of
genes
2. Reproduction: create new COMBINATIONS of genes.
Mutation vs reproduction? what is the difference? Mutations create new VERSIONS of
genes
and Reproduction create new COMBINATIONS of genes
, Name the "building blocks" of living organisms. (smallest to largest) Atom (smallest),
molecule, macromolecule, cell, organism (largest)
What is matter? Matter has volume (takes up space) and mass (substance)
e.g. Table, computer, book, me
What is matter made up of? Atoms
What makes up an atom? 1. Protons (positive charge)
2. Neutrons (neutral charge)
3. Electrons (negative charge)
A Bohr model is .. a depiction of an atom. It contains the protons and neutrons in the
middle and the electrons are surrounding it.
The mass # is equal to?
The Atomic # is equal to? The mass number is equal to Protons and neutrons since
neutrons and protons make up the nucleus.
The atomic number is equal to the number of protons.
What is empty space? (non -matter) it has no volume (does not take up space)
no mass (no substance)
