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Explain the common similarity between prokaryotic and
eukaryotic cells in at least 2 sentences. - ANSWER-The
fundamental similarity between prokaryotic and eukaryotic
cells is the presence of a plasma membrane. This structure
separates life from non-life. It acts as a barrier to the
surrounding environment, but contains proteins that permit
select molecules to enter and exit the cell.
Would a scientist be more likely to find an element such as O in
a biomolecule or W? Explain which they would more likely find
and give specific physical/chemical properties. - ANSWER-A
scientists would be more likely to find an element such as O in
a biomolecule. Larger elements such as W tend to form ionic
bonds, while smaller elements like O tend to form more stable
covalent bonds. Therefore, elements such as O are more
favored by biomolecules because they tend to form stronger
bonds by sharing electrons and forming significant overlap
with other elements. As a result, these stronger bonds require a
substantial amount of energy to break them and allows the
bonds to withstand insults, such as thermal and mechanical
stress.
,Describe at least 3 properties of carbon the permit it to be the
basis of life. - ANSWER-1. Carbon can form strong covalent
bonds with a variety of different elements.
2. Carbon can also form double and triple bonds with other
carbons atoms as well as with other elements, such as
nitrogen and oxygen.
3. Carbon can form long chains through bonding with other
carbons to create long polymers.
4. Carbon can also form cyclic structures, also referred to as
ring compounds.
What is the definition of inorganic chemistry? How does it
different from organic chemistry - ANSWER-Inorganic
chemistry is the study of minerals, metals, and other non-
carbon compounds.
Organic chemistry is the study of the chemical and
physical properties of
carbon.
Biochemists study the communication within and around
organisms. According to the module, what are 2 other aspects
of living organisms that biochemists study? - ANSWER-1. The
relationship between structure and function of biomolecules
2. Chemical reactions of organisms (metabolism)
3. Communication within and among organisms
Water is considered a polar solvent due to attractive forces
known as hydrogen bonds. A hydrogen bond is: - ANSWER-an
, attractive force between molecules where partially positive
hydrogen atoms are attracted to partially negative atoms of F,
O, or N
What is a London force? - ANSWER-a temporary attraction
between atoms due
to electron
alignment
What is a dipole-dipole force? - ANSWER-an attraction
between the positive
end of one polar molecule and the negative end
of another
What attributes contribute to water's unusual properties?
- ANSWER-1.
geometry of the
molecule
2. polarity of the -OH
bonds
3. ability of water molecules to
hydrogen bond
4. body angle of water molecules to
H bond
The H+ concentration of a solution is 7.9 x 10^-13 M. What
is the pH? -
ANSWER-
12.1