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BIO 156 EXAM 1 QUESTIONS AND CORRECT ANSWERS | RATED A+ | UPDATED 2025
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BIO 156 EXAM 1 QUESTIONS AND CORRECT ANSWERS | RATED A+ | UPDATED 2025
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BIO 156 EXAM 1 QUESTIONS ANDCORRECT ANSWERS | RATED A+ |
UPDATED 2025
List features that distinguish living organisms from nonliving matter. - ANSWER
consists of one or more cells, movement (require energy and nutrients),
homeostasis, reproduction (DNA),
Describe the levels of organization in the living world. - ANSWER atoms -
molecules - cells- tissue- organs- organ system- organism - population -
community - ecosystem- biosphere
List the three domains of life and distinguish between each domain - ANSWER
Bacteria - do not contain a nucleus, single cell
Archaea - do not contain a nucleus have a different cell wall then bacteria, single
cell
Eukarya - cells contain a nucleus, single or multi cell
List four kingdoms within the domain Eukarya and distinguish between them -
ANSWER Protista - mostly unicellular, have chloroplast and cellulose (slime
mold, amoeba, kelp)
Plantea -multicellular with cell walls made of cellulose. They have chloroplasts and
prepare their own food through photosynthesis. ( plants, flowers, and mosses)
Animalia - Animalia are multicellular. However, they are lacking chloroplasts and
cell walls. Can not prepare their own food (Heterotrophs). ( insects, fishes,
mammals, and reptiles)
, Fungi- have chitin in their cell walls and they are heterotrophs. ( mushrooms and
yeasts)
List and describe the steps involved in solving a problem using hypothesis-based
science - ANSWER Observation - simple statement that can be tested
Hypothesis - Simple statement of expected outcome (Null Hypothesis: There is no
difference.........)
Experiment - Testing Hypothesis
Control Group - no change made, reference group
Experimental Group - once variable (independent variable) changed and
compared to control group
Conclusion - reject or fail to reject hypothesis,if fail to reject null hypothesis is
proven true
Explain how electron configuration influences the chemical properties of an atom.
- ANSWER The valence (outer shell) electrons want the outer shell to be full. In
order to achieve this, they will react to either lose or gain or share electrons
Describe the formation of a hydrogen bond and explain how it differs from a
covalent or ionic bond - ANSWER A hydrogen bond forms when hydrogen is
covalently bonded to one atom while also being attracted to another. Covalent
and ionic bonds are intramolecular (between atoms of a molecule), while
hydrogen bonds are intermolecular (between whole molecules).
Describe how water contributes to the fitness of the environment that supports
all life - ANSWER Water contributes to all life on earth. Many organisms are
made up of mostly water. All cells are about 70% water. The abundance of water
makes life on earth possible.
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