BIL 150 DiResta Final || QUESTIONS & ANSWERS 100% VERIFIED
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Course
BIL 150
Institution
BIL 150
Suppose you were leading a team looking for extraterrestrial life on distant planets. You find something that you suspect might be a living organism. Which characteristic would be a requirement in order for it to be classified as a living organism? correct answers Ability to self-replicate
Evide...
BIL 150 DiResta Final || QUESTIONS & ANSWERS
100% VERIFIED
Suppose you were leading a team looking for extraterrestrial life on distant planets. You find
something that you suspect might be a living organism. Which characteristic would be a
requirement in order for it to be classified as a living organism? correct answers Ability to
self-replicate
Evidence indicated that all life on Earth today correct answers has a single common ancestor
Which structure is/are necessary in the forming of a cell? correct answers Membrane
Natural selection acts correct answers through differential probabilities of survival and
reproductive success
Which statement about the scientific method is true? correct answers After forming a
hypothesis, scientists apply logic to make predictions from the hypothesis.
A rapid decline of amphibian populations has been observed worldwide. Which of the
following could not be a reasonable hypothesis to explain this decline? correct answers
Deaths from natural causes.
Many possible applications of scientific knowledge raise ethical issues for some people.
Which application, however, would be rejected by all responsible scientists? correct answers
Using the scientific method to dictate how the world ought to be
Eukaryotic cells differ from prokaryotic cells in that euk cells hace correct answers a nucleus
Organelles such as mitochondria and chloroplasts are hypothesized to have originated by
__________________, a process by which larger cells engulfed smaller cells. correct answers
endosymbiosis
which statement supports the idea that biological systems are dynamic, not static? correct
answers A small percentage of the atoms present in a human infant are present in the human
at age 80.
The information needed to produce proteins is contained in correct answers genes
the nucleotide sequence of a portion of a gene encoding eye color in fruit flies is shown in the
top row of the table. Below it is the sequence after a mutation occurred. What conclusion can
be drawn from this information? correct answers The mutation may change the protein
encoded by the gene
Which is not a major step in the methods used to conduct scientific inquiry? correct answers
Expressing an opinion
How does science differ form non-science? correct answers Science involves developing
explanations that can be tested, wheras non-science deals with explanations that cannot be
tested.
,A covalent bond is the sharing of _______ between atoms, whereas an ionic bond is the
_____________ . correct answers Electrons; transfer of electrons from one atom to another
What determines if a molecule is polar, non-polar, or ionic? correct answers the differences in
the elctronegatitvities of the atoms
Which statement regarding the functional groups of carbon-based molecules is false? correct
answers They repel each other
Molecules containing a large number of hydroxyl groups are correct answers soluble in water
which statement about condensation (dehydration) reactions is false? correct answers They
consume water as a reactant. THEY RELEASE WATER
Starch and glycogen, which are both polysaccharides, differ in their function in that starch is
__________ , whereas glycogen ________ . correct answers the principal energy storage
compound of plants; is the main energy storage of animals
You look at the label on a container of shortening and see the words"hydrogenated vegetable
oil". This means that during processing, the number of carbon-carbon double bonds in the oil
was decreased. What is the result of decreasing the number of double bonds? correct answers
The oil is now solid at room temperature
The portion of a phospholipid that contains the phosphorus group has one or more electric
changes, which make this region correct answers Hydrophilic
Which of the following is responsible for water's high heat capacity, high surface tension,
strong cohesion, and strong adhesion properties? correct answers Hydrogen bonding between
molecules
The figures show structures of amino acids, which are small biological molecules found in
living cells. Each amino acid has a unique side chain, shown in the boxed portion of each
figure. Which amino acid or acids have hydrophobic side chains? correct answers leucine and
phenylalanine
(NON-POLAR)
Cellulose, starch, and glyogen are all polymers of glucose. Animals can hydrolyze starch and
glycogen but can't hydrolyze cellulose because it correct answers contains different
glycosidic linkages than starch or glycogen.
Three fats were analyzed for their saturated and unsaturated fatty acid content. The results are
summarized in the table. One of the fats is an oil at room temperature, while the other two are
solids. Use the data to identify the two solids and predicts which has the higher melting point.
correct answers A and C are solids; A has the higher melting points
Nucleotides in RNA are connected to one another in the polynucleotide chain by correct
answers covalent bonds between sugar and phosphate.
, Which statement about DNA and RNA is true? correct answers DNA contains deoxyribose
and RNA contains ribose
What is the nucleotide sequence of the complementary strand of the DNA molecule 5'-
AATGCGA-3'? correct answers 3'-TTACGCT-5'
A macro molecule isolated from the bone of dinosaurs is found to have primary chains of
nitrogen-carbon-carbon repeats. It would bne classified as what type of molecule? correct
answers polypeptide
The side of leucine is a hydrocarbon. In a folded protein, leucine would likely not be found
correct answers on the exterior of a cytoplasmic enzyme
The tertiary structure of a protein is determined by its correct answers interactions among R
groups
the primary structure of proteins is the ________ . The primary structure contains the
information necessary for the formation of secondary structure, including the ________ and
the _________. Secondary structure of proteins is stabilized by formation of _______ bonds.
correct answers amino acid sequence; a helix; b pleated sheet; hydrogen
Two polynucleotides of unknown type were analyzed for their purine and pyrimidine base
content. Based on this information, how can these unknowns be classified? correct answers
Unknown 1 can be classified as DNA, while Unknown 2 is RNA
Most cells are small because correct answers a larger surface area-to-volume ratio increases
the efficiency of processes within the cell.
Which statement about the structure of a protein is true? correct answers A gene mutation
that causes a single amino acid substitution in the primary structure of a protein can cause
significant change in the protein's tertiary structure.
If a cell lacked ribosomes, it would not be able to correct answers make proteins
If a cell is making a protein that is then going to modified and package for export out of the
cell, what is the order of structures it will most likely pass through correct answers Rough
ER; Golgi apparatus; vesicles.
Mitochondria and chloroplasts differ in that correct answers mitochondria harvest chemical
energy, whereas chloroplasts convert light energy into chemical energy
Lysosomes are important to many eukaryotic animal cells because they contain correct
answers digestive enzymes
Components of the cytoskeleton can be linked to all of the following functions of eukaryotic
cells except correct answers
A protein that forms an ion channel through a membrane is most likely correct answers
transmembrane protein
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