Chapter-1 (Studying Life)
BIOL. 1305 – Spring 2011 (CRN# 22530)
1. The basic structural and physiological unit of all living organisms is the
2. A cell
a. can be composed of many types of tissues.
b. is found only in plants and animals.
c. is the smallest entity studied by biologists.
d. may be a distinct entity or a building block of a more complex organism.
e. All of the above
3. A species consists of
a. all the organisms that live together in a particular area.
b. morphologically similar organisms that cannot interbreed.
c. morphologically similar organisms capable of interbreeding.
d. an adult organism and all of its offspring.
e. morphologically similar organisms that live in the same area.
4. A key point in Darwin’s explanation of evolution is that
a. the biological structures most likely to be inherited are those that have become best suited to the
environment through constant use.
b. all mutations that occur are those that will help future generations better fit into their environments.
c. any trait that confers even a small increase in the probability that its possessor will survive and
reproduce will be strongly favored and will spread through the population.
d. genes change in order to help organisms cope with problems encountered within their
e. extinction is nature’s way of weeding out undeserving organisms.
5. Which of the following represents a correct ordering of the levels of complexity at which life is
studied, from most simple to most complex?
a. Cell, tissue, organ, organism, population, community
b. Community, population, organism, organ, tissue, cell
c. Cell, organ, tissue, organism, population, community
d. Cell, tissue, organ, population, organism, community
e. Tissue, organ, cell, population, organism, community
6. Earth is approximately _______ years old.
a. 4–5 billion