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biology test
freshman year
47 cards·by buttwipe47
What is the goal of Science?
to use data to support a particular point of view.
The work of scientists usually begins with
careful observations.
Information gathered from observing a plant grow 3 cm over a two-week period results in
data
A hypothesis
may be disproved by a single experiment
In science a hypothesis is only useful if
it can be tested
What is the best way to test an experiment using variables?
Testing them in different climates/areas.
A controlled experiment allows the scientist to isolate and test
a single variable.
Scientists publish the details of important experiments so that
their work can be repeated, the experimental procedures can be reviewed and others can try to
reproduce the results
The ability to reproduce results is important part of any
experiment
When enough experimental data support a hypothesis, the hypothesis becomes a
theory
A theory
may be revised or replaced
A well-tested explanation that unifies a broad range of observations is a
theory
Biology is the study of
the living world
What is not a characteristic of all living things?
the ability to move
What best explains why birds fly south for the winter?
Living things respond to their environment
Cell specialization in multicellular organisms allows cells to
perform different functions
The amount of light and temperature are examples of
factors to which living things respond
The process by which organisms keep their internal conditions fairly constant is called
homeostasis
What level of organization includes all the living things on Earth?
the biosphere
What is the term for a group of organisms of one type living in the same place?
population
Which level of organization includes all the other levels?
ecosystem
In the metric system, the basic unit of length is the
metre
On the Celcius temperature scale, what is the boiling point of water?
100 degrees
What is not a unit of measurement in the Metric system?
inch
The basic unit of mass is
the gram
What is the term given to a group of cells that develops from a single original cell?
cell culture
Pollen grains are produced by
male reproductive structures
In angiosperms, reproduction takes place in
flowers
The tough outer layer of a seed is called the
seed coat
The light, winged structure that contains a maple seed at its centre forms from
the ovary wall and the flower stem
A ripened ovary that contains angiosperm seeds is called a
fruit
What is true of all fruits?
All fruits contain seeds
What fruit-eating animal likely would ensure the widest dispersal of a plant's seeds?
a bird
A seed that is dispersed to an area far away from the parent plant might face less
competition with the parent plants
Seeds that are dispersed by wind and water typically are
lightweight
An example in which the entire aboveground part of the plant acts as a seed delivery system is
the
tumbleweed
Seeds of temperate plants tend to germinate in
spring
A period during which the embryo of a seed is alive but not growing is
dormancy
A period of dormancy can allow seeds to germinate
under ideal conditions
The early growth stage of a plant embryo is called
germination
During an experiment, measuring the height of a plant in centimetres would be an example of
collecting _____________________ data
quantitative
The information you gather during an experiment is called your
data
The name given to the idea that life could arise from nonliving matter is
spontaneous generation
The combination of chemical reactions through which an organism builds up or breaks down
materials as it carries out its life processes is
metabolism
What is an inference?
Logical interpretation based on prior knowledge and experience
What are the differences between sexual and asexual reproduction?
Sexual reproduction needs a second parent
What structures are included in the level of organization called groups of cells?
tissues, organs and organ systems are included in this system