BIOD 101 FINAL EXAM 2|QUESTIONS WITH
100% CORRECT ANSWERS
Which of the main organic compounds serve as the primary source of fuel for organisms? -
✔️✔️carbohydrates
Explain what happens to a cell when it is placed in a hypertonic solution. - ✔️✔️When a cell is
placed in a hypertonic solution, water will flow out of the cell towards the area of higher solute
concentration. This will cause the cell to shrink.
Which of the nitrogenous bases can be found in RNA - ✔️✔️Cytosine
adenine
uracil
guanine
List the 7 most widely accepted characteristics of living organisms. - ✔️✔️(1) Order, (2)
Evolutionary Adaptation, (3) Regulation, (4) Energy Processing, (5) Growth and Development,
(6) Response to the Environment, and (7) Reproduction.
Describe evolutionary adaptation and give an example. - ✔️✔️specifically refers to smaller,
genetic changes that allow for better survival of an organism
-the color of an animal's fur
What is an adaptation? What characteristic of life would an adaptation fall into? - ✔️✔️adaption
is a change or process that allows an organism based to become better suited for its
environment
-Responsiveness to the environment
,Compare and contrast sexual and asexual reproduction. - ✔️✔️Sexual reproduction involves the
fusion of two gametes (one from each parent) that will unite and grow into a new offspring.
-Asexual reproduction, in contrast, gives rise to new offspring from a single organism.
A group of one particular species living within defined boundaries of a community best
describes a(n): - ✔️✔️population
A system of living and non-living things in a region best describes a(n): - ✔️✔️ecosystem
What are the 3 domains that comprise the Linnaean Classification system? - ✔️✔️(1) Archaea, (2)
Eubacteria, and (3) Eukarya
What is the purpose of a phylogenic tree? - ✔️✔️A visual representation that shows the
relationships between different organisms and their evolutionary history
True or False: Extremophiles are a small sub-set of the Archaea domain that live in extreme
environments. - ✔️✔️true
Bacteria that neither benefits from nor harms its host and are often part of the human flora are
considered: - ✔️✔️commensal
Bacteria that cause illness are considered: - ✔️✔️pathogenic
Describe what an exotoxin is and give an example. - ✔️✔️An exotoxin is a toxic substance that is
secreted by bacteria into the surrounding environment
Cholera
, Describe what an endotoxin is and give an example. - ✔️✔️A n endotoxin is a toxic component of
the outer membrane of a bacteria. The endotoxins are released when the bacteria dies
E. coli
Describe what a symbiotic relationship looks like between two organisms. - ✔️✔️A long term
relationship between two different organisms In which one or both organisms benefit from the
paired interaction
What are the 4 main Eukaryote Kingdoms? - ✔️✔️(1) Fungi, (2) Protista, (3) Plantae, and (4)
Animalia
Describe the process of binary fission and state whether it is a form of sexual or asexual
reproduction. - ✔️✔️Binary fission is an asexual form of reproduction. Binary fission occurs when
one cell splits in half to form two identical cells.
Compare and contrast 3 types of symmetry found in animal body plans. - ✔️✔️-Radial Symmetry:
symmetry around a center axis
-Bilateral Symmetry: when a line could split the body into two equal sides
-Spherical Symmetry: any cut through the center results two equal halves
Autotrophs are considered "primary producers". What does this mean? - ✔️✔️Primary Producers
support all other trophic levels by recycling organic matter from the environment
Herbivores are considered "primary consumers". What does this mean? - ✔️✔️Primary
consumers eat primary producers
You are considering a model system for research purposes. What are 6 guidelines you should
consider for this system? - ✔️✔️(1) Easy to maintain, (2) Physical size should be convenient, (3)
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