RIO BIO 156 EXAM 1 FINAL EXAM 2024|BRAND NEW EXAM QUESTIONS AND CORRECT ANSWERS ALL GRADED A+|GUARANTEED SUCCESS|LATEST UPDATE
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RIO BIO 156
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RIO BIO 156
RIO BIO 156 EXAM 1 FINAL EXAM 2024|BRAND NEW EXAM QUESTIONS AND CORRECT ANSWERS ALL GRADED A+|GUARANTEED SUCCESS|LATEST UPDATE
List features that distinguish living organisms from nonliving matter. - ANSWER-1. Cellular basis - All living things consist of one or more cells
2. R...
RIO BIO 156 EXAM 1 FINAL EXAM
2024|BRAND NEW EXAM QUESTIONS AND
CORRECT ANSWERS ALL GRADED
A+|GUARANTEED SUCCESS|LATEST UPDATE
2024-2025
List features that distinguish living organisms from nonliving matter. - ANSWER-✅1.
Cellular basis - All living things consist of one or more cells
2. Requirement for energy and nutrients - Life is sustained by ongoing inputs of
energy and nutrients
3. Homeostasis - Living things sense and respond to change
4. DNA is hereditary material - Genetic information in the form of DNA is passed to
offspring
Describe the levels of organization in the living world. - ANSWER-✅Atoms → cells →
tissues → organs → organ systems → organism → population → community →
ecosystem → the biosphere
List the three domains of life and distinguish between each domain. - ANSWER-
✅Prokaryotes are bacteria and archaea.
Domain Bacteria: unicellular no nucleus
Domain Archaea: unicellular no nucleus but closer to eukarya
Domain Eukarya: have nucleus
List four kingdoms within the domain Eukarya and distinguish between them. -
ANSWER-✅1. Fungi can be single or multicellular but digest food outside their body.
2. Plants are multicellular and are photosynthetic.
3. Animals are multicellular and eat other organisms for nutrients.
4. Protists are the unicellular organisms that have a nucleus but do not fit any other
category.
List and describe the steps involved in solving a problem using hypothesis-based
science - ANSWER-✅observation
hypothesis
experimental
,conclusion
Describe the concept "an organism is more than the sum of its parts." - ANSWER-
✅organism is part of a more complex organization. These emergent properties go
beyond itself.
By definition, distinguish between a population, a community, and an ecosystem. -
ANSWER-✅1. Population: multiple organisms in a single spot
2. community: is made up of populations of different organisms
3. ecosystem: is the interactions between the community and the non-living
environment that surrounds it
Distinguish between a producer, a consumer and a decomposer. - ANSWER-
✅producer:photosynthetic organisms that trap light and convert that light energy
into chemical bond energy. such as some bacteria, protists, and all plants
consumer: organisms that feed on already-stored food
decomposer: bacteria and fungi recycle the dead molecules throughout the
bioshpere.
Distinguish between a hypothesis and a prediction. - ANSWER-✅hypothesis:
testable explanation of a natural phenomenon.
prediction: statement based on hypothesis about a condition that should exit if the
hypothesis is correct.
What is meant by the phrase potentially falsifiable hypothesis? - ANSWER-✅a
hypothesis can be proven that is false
Define the term control group and explain the value of a control group in an
experiment. - ANSWER-✅Group of individuals identical to an experimental group
except for the independent variable under investigation
To provide a basis of comparison to the experimental group
Define the term theory and explain the point in which a hypothesis becomes a
theory. - ANSWER-✅Suppose a hypothesis stands even after years of tests.
It is consistent with all data ever gathered, and it has helped us make successful
predictions about other phenomena.
Explain how electron configuration influences the chemical properties of an atom. -
ANSWER-✅Each cloud can hold a determinant number of electrons. When the
electron number changes, ions are formed. The number of electrons influences the
bonding between atoms.
hydrogen bond - ANSWER-✅The electron from the hydrogen spends most of its
time around the oxygen atom creating a partial positive charge on each hydrogen.
The presence of additional electrons makes the oxygen partially negative.
, covalent bond - ANSWER-✅two atoms share a pair of electrons, so that each atom's
vacancy
becomes partially filled
ionic bond - ANSWER-✅Type of chemical bond in which a strong mutual attraction
links ions of opposite charge.
Describe how water contributes to the fitness of the environment that supports all
life. - ANSWER-✅1. an excellent solvent
2. has cohesion (insect on water, water roots)
3. stabilize temperature (cool surface)
Explain the basis for the pH scale. - ANSWER-✅The basis for the pH scale is the
amount of H+ and OH- ions in a solution. More H+ ions means a solution is more
acidic, while more OH- ions means the solution is more basic.
List and describe the four major classes of organic compounds. - ANSWER-
✅carbohydrate
lipid
protein
nucleic acids
Describe the structure of an atom - ANSWER-✅protons
neutrons
electrons
Explain why radioisotopes are important to biologists. - ANSWER-✅Atoms of a
radioisotope have an unstable nucleus that breaks up spontaneously.
radioisotopes can be used as or in tracers, which are substances with a detectable
component.
PET scan
Explain how an acid differs from a base. - ANSWER-✅The more concentrated the
hydrogen ions are, the lower the pH of the solution.
What is the cause and environmental consequence of acid rain? - ANSWER-
✅Burning fossil fuels such as coal releases sulfur and
nitrogen compounds that affect the pH of rain and other forms of precipitation.
drastically changes the pH of water in soil, lakes, and streams.
Describe carbohydrates - ANSWER-✅Simple sugars are called monosaccharides
( Glucose and fructose).
sucrose is disaccharide.
polysaccharides.
provide energy and structural support for living systems.
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