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BIO 156 Exam 1 Practice Questions –
Questions and Answers
The smallest unit of any substance is the ___.
a. atom
b. molecule
c. cell - Answers✓✓a. atom
The smallest unit of life is the ___.
a. atom
b. molecule
c. cell
d. organism - Answers✓✓c. cell
Organisms require ___ and ___ to maintain themselves, grow, and reproduce.
a. DNA; energy
b. food; sunlight
c. nutrients; energy
d. DNA; cells - Answers✓✓c. nutrients; energy
By sensing and responding to change, organisms keep conditions in the internal environment
within ranges that cells can tolerate. This process is called ___.
a. reproduction
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b. development
c. homeostasis
d. inheritance - Answers✓✓c. homeostasis
DNA ___.
a. guides form and function
b. is the basis of traits
c. is transmitted from parents to offspring
d. all of the above - Answers✓✓d. all of the above
___ is the transmission of DNA to offspring.
a. Reproduction
b. Development
c. Homeostasis
d. Inheritance - Answers✓✓a. Reproduction
A butterfly is a(n) ___ (choose all that apply).
a. organism
b. domain
c. species
d. eukaryote
e. consumer
f. producer
g. prokaryote
h. trait - Answers✓✓a. organism
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d. eukaryote
e. consumer
___ move around for at least part of their life.
a. Living organisms
b. Animals
c. Species
d. Eukaryotes - Answers✓✓b. Animals
A bacterium is ___ (choose all that apply).
a. an organism
b. single-celled
c. an animal
d. a eukaryote - Answers✓✓a. an organism
b. single-celled
Bacteria, Archaea, and Eukarya are three ___. - Answers✓✓domains
A control group is ___.
a. a set of individuals that have a certain characteristic or receive a certain treatment
b. the standard against which an experimental group is compared
c. the experiment that gives conclusive results - Answers✓✓b. the standard against which an
experimental group is compared