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bio 115 exam 1 questions with accurate answers graded A+ passed
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bio 115 exam 1 questions with accurateanswers graded A+ passed
Emergent Properties - correct answer ✔✔Result from the arrangement and interaction of parts within a
system. Also, when two or more compounds come together to create something completely new.
Ex: - a functioning bicycle emerges only when all necessary parts connect in the correct way.
- H + O2 = water, hydrogen peroxide
- C,H,O = sugars, fats
Deductive Reasoning - correct answer ✔✔Can't be argued because the it's based on
logical/premises/facts. Takes known facts and find specific relationships from them; arrive at conclusion
that must be true based on facts.
Ex: Man is mortal (premise)
Socrates was a man (premise)
Socrates was mortal (conclusion)
Inductive Reasoning - correct answer ✔✔Can be argued because the premises may be false and
therefore must be tested. Takes specific pieces of information and produces a generalized statement,
reasoning or question to test.
Ex: Socrates was Greek
Most Greek eat fish
Need to test
The Scientific Method - correct answer ✔✔1. Make Observation
2. Ask a Question
3. Form a Hypothesis
4. Make a prediction from hypothesis
5. Test Prediction (Experiment)
,b. a community - correct answer ✔✔All the organisms on your campus make up
a. an ecosystem
b. a community
c. a population
d. a taxonomic domain
d. nervous system, brain, nervous tissue, nerve cell - correct answer ✔✔Which of the following is a
correct sequence of levels in life's hierarchy, proceeding downward from an individual animal?
a. organism, brain, organ system, nerve cell
b. organ system, nervous tissue, brain, nerve cell
c. organism, organ system, tissue, cell, organ
d. nervous system, brain, nervous tissue, nerve cell
a. Poorly adapted individuals never produce offspring. - correct answer ✔✔Which of the following is
NOT an observation or inference which Darwin's theory of natural selection is based?
a. Poorly adapted individuals never produce offspring.
b. There is heritable variation among individuals.
c. Because of overproduction of offspring, there is competition for limited resources.
d. A population can become adapted to its environment over time.
c. understand the behavior of entire biological systems by studying interactions among its component
parts. - correct answer ✔✔Systems biology is mainly an attempt to
a. analyze genomes from different species.
b. simplify complex problems by reducing the system into smaller, less complex systems.
c. understand the behavior of entire biological systems by studying interactions among its component
parts.
d. build high-throughput machines for rapid acquisition of biological data.
c. protists have a membrane-bounded nucleus - correct answer ✔✔Protists and bacteria are grouped
into different domains because
,a. protists eat bacteria
b. bacteria are not made of cells
c. protists have a membrane-bounded nucleus
d. protists are photosynthetic
c. the structure of DNA - correct answer ✔✔Which of the following best demonstrates the unity among
all organisms?
a. emergent properties
b. descent with modification
c. the structure of DNA
d. natural selection
b. tests experimental and control groups in parallel - correct answer ✔✔A controlled experiment is one
that
a. proceeds slowly enough that a scientist can make careful records of the results
b. tests experimental and control groups in parallel
c. is repeated many times to make sure the results are accurate
d. keeps all variables constant.
c. Hypotheses usually are relatively narrow in scope; theories have broad explanatory power. - correct
answer ✔✔Which of the following statements best distinguishes hypotheses from theories in science?
a. Theories and hypotheses that have been proved.
b. Hypotheses are guesses; theories are correct answers
c. Hypotheses usually are relatively narrow in scope; theories have broad explanatory power.
d. Theories are proven to be true; hypotheses are often contradicted by experimental results.
a. the fish swam in a zigzag motion - correct answer ✔✔Which of the following is an example of
qualitative data?
a. the fish swam in a zigzag motion
b. the contents of the stomach are mixed every 20 seconds
, c. the temperature decreased from 20 degrees to 15 degrees
d. the six pairs of robins hatched an average of three chicks each.
d. If my hypothesis is correct, I can expect certain test results. - correct answer ✔✔Which of the
following best describes the logic of scientific inquiry?
a. If i generate a testable hypothesis, tests and observations will support it.
b. If my prediction is correct, it will lead to a testable hypothesis.
c. If my observations are accurate, they will support my hypothesis
d. If my hypothesis is correct, I can expect certain test results.
Atomic Number - correct answer ✔✔Number of protons in its nucleus. (displayed in bottom left corner
of element)
Mass Number - correct answer ✔✔the sum of protons and neutrons in the nucleus (displayed in top left
corner of element)
Atomic Mass (Atomic weight) - correct answer ✔✔the atoms total mass, can be approximated by mass
number
Daltons - correct answer ✔✔Neutron mass and proton mass are almost identical and measured in
Daltons.
- Protons & Neutrons make up ATOMIC NUCLEUS
Radioactive (unstable) Isotope - correct answer ✔✔one in which the nucleus decays spontaneously,
giving off particles and energy.
- leads to a change in # of protons, and it transforms the atom to an atom of a different element
Ex: when an atom a Carbon-14 (14C) decays, it become an atom of Nitrogen (14N)
Alpha Particle - correct answer ✔✔(radioactive isotope) radium, uranium decay to radon; effects stop at
skin level
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