Montgomery College BIO 150 Lecture Test 1 - Chs. 1-5, 8.4-8.5 Questions And Answers Already Graded A+
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Montgomery College BIO 150 Lecture
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Montgomery College BIO 150 Lecture
dependent: a variable whose value is measured during an experiment to see if it is
influenced by changes in the independent variable.
independent: a variable whose value is controlled and manually changed during an
experiment to reveal effects on the dependent. - ️️define: dependent vs.
ind...
Montgomery College BIO 150 Lecture
Test 1 - Chs. 1-5, 8.4-8.5
dependent: a variable whose value is measured during an experiment to see if it is
influenced by changes in the independent variable.
independent: a variable whose value is controlled and manually changed during an
experiment to reveal effects on the dependent. - ✔️✔️define: dependent vs.
independent variables
living organisms have cells, movement, reproduction and growth abilities. -
✔️✔️compare living organisms with nonliving objects.
viruses have DNA. however, they are not made of cells and cannot extract energy from
the environment. - ✔️✔️explain why viruses are difficult to classify as living or
nonliving.
1. biosphere, 2. ecosystems, 3. communities, 4. populations, 5. organisms, 6.
organs/organ systems, 7. tissues, 8. cells, 9. organelles, 10. molecules - ✔️✔️outline
the major levels of biological organization.
novel properties emerge that are absent from the preceding level. example:
photosynthesis occurs in organized chloroplast but not in a tube of everything in a
chloroplast separated - ✔️✔️discuss the meaning of the phrase 'emergent properties.'
give an example.
there is unity in the kinship among species that descent from common ancestors. ex:
the extremely different types of eukaryotes still have the same cilia - ✔️✔️discuss the
unity that underlies the diversity of life. give an example.
from conclusions about individuals varying from traits, populations producing more
offspring than their next generation, and species adapting to environments, Darwin
decided that the environment selecting te best to survive was evolution's mechanism for
descent with modification. - ✔️✔️outline Charles Darwin's theory of evolution by natural
selection. include the phrase 'descent with modification.'
1. make observation, 2. ask question, 3. formulate hypothesis, 4. design experiments to
test hypothesis - ✔️✔️outline the steps of the scientific method.
it is the study of the natural and physical world; supernatural and religious questions are
outside the bounds of science - ✔️✔️discuss the limits of science.
is there a God? - ✔️✔️give examples of questions that cannot be answered by
science.
, the scientific study of life. - ✔️✔️define: biology
the new properties that arise with each step upward in the hierarchy of life, owing to the
arrangement and interactions of parts as complexity increases. - ✔️✔️define: emergent
properties
descent with modification; the idea that living species are descendants of ancestral
species that were different from the present-day ones; also defined more narrowly as
the change in the genetic composition of a population from generation to generation. -
✔️✔️define: evolution
the steady-state physiological condition of the body. - ✔️✔️define: homeostasis
qualitative: categorical measurement expressed by means of a natural language
description.
quantitative: information that can be measured and written down with numbers -
✔️✔️define: qualitative vs. quantitative data
a testable explanation for a set of observations based on the available data and guided
by inductive reasoning. a hypothesis is narrower in scope than a theory. - ✔️✔️define:
hypothesis
an explanation that is broader in scope than a hypothesis, generates new hypotheses,
and is supported by a large body of evidence. - ✔️✔️define: theory
an element is one substance and cannot be broken down, a compound is a substance
with two or more different elements combined in a fixed ratio. - ✔️✔️distinguish
between an element and a compound.
oxygen (O), carbon (C), hydrogen (H), nitrogen (N) - ✔️✔️list the four elements that
make up 96% of the weight of organisms.
can be used for biological research and medicine, such as being used with imaging
instruments like the PET scanner. they can also be negative when radiation from
decaying isotopes is released. - ✔️✔️discuss some useful applications of radioisotopes
as well as some of the risks involved with their use.
there are three shells. the closer to the nucleus, the less energy there is. the chemical
behavior of an atom depends on distribution of electrons in shells. - ✔️✔️explain
energy shells and how they affect the behavior of atoms.
orbitals are 3D space where an electron is found 90% of the time. spherical (s) orbitals
and dumbbell-shaped (p) orbitals both affect the shape of the molecules they are in
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