標題: [試題] 94上 普生乙 期中考 蔡珊珊 + 林讚標
時間: Tue Dec 13 01:05:44 2005
課程名稱︰普通生物學乙
課程性質︰系定必修
課程教師︰蔡珊珊+林讚標
開課系所︰農化一
考試時間︰2005/11/21
以下為蔡老師出題部分(70%)
之選擇題部分，佔50%
試題 :
Biology Midtern Exam
I.MATCH THE FOLLOWINGS:(2% each)
1.What are homologous chromosomes?
a.chromosomes that are similar in their size, shape
and gene content
b.similar chromosomes that are found in different
individuals of the same sepcies
c.the two "threads" in a replicated chromosomes
(they have identical copies)
d.the products of the crossing over, which contain a
combination of segments from maternal chromosomes
and segments from paternal chromosomes
2.Phospholipids can form all of the following structures
in water EXCEPT which one?
a.micelles
b.bilayers
c.monolayers
d.vesicles
3.Which of the following is NOT true of osmosis?
a.It is a special case of diffusion.
b.It is an energy-demanding or "active" process.
c.Water moves from areas of high concentration to
areas of low concentration.
d.It occurs whenever solutions are separated by a
semipermeable membrane.
4.What is the most likely role of a cell that contains
an extensive smooth ER?
a.It plays a role in storage.
b.It synthesizes large quantities of lipids.
c.It actively exports protein molecules.
d.It plays a role in immune function.
5.What is the site of synthesis of proteins for export?
a.free ribosomes
b.ribosomes that attach to the endoplasmic reticulum
c.the Gulgi complex
d.ribosomes that are attached to the outer mitochondrial
membrane
6.What is the function of the nuclear pore complex?
a.regulates movement of materials across the nuclear
membrane
b.assembles ribosomes from raw materials that are
synthesized in the nucleus
c.communicates with components of the endomembranal
system
d.synthesizes and repairs DNA, the unit of genetic
information.
7.Transport of materials across a cell membrane:
a.is selective
b.always takes place from a region of greater
concentration to a region of lesser concentration
c.is an energy-requiring process regardless of the
chemical properties of the substance being transported
d.requires a carrier molecule in the membrane
8.A parent cell divides to form two genetically
identical daughter cells in the process of mitosis.
For mitosis to take place:
a.The parent cell must first be fertilized.
b.The parent cell must replicate its entire genome
prior to mitosis.
c.The parent cell must reproduce its DNA during
telophase.
d.The parent cell must divide its DNA in half so each
daughter cell gets only the genes needed to carry
out its functions. In this way, differentiation
occurs.
9.The first gap in the cell cycle(G1) corresponds to:
a.normal growth and functioning
b.the period in which DNA is being replicated
c.the begining of mitosis
d.the stage between DNA replication and the M phase
10.A key difference between mitosis and meiosis is:
a.synapsis of homologous chromosomes in mitosis
b.synapsis of homologous chromosomes in meiosis
c.synapsis of nonhomologous chromosomes in mitosis
d.synapsis of nonhomologous chromosomes in meiosis
11.During interphase of the cell cycle, just prior to
mitosis or meiosis,
a.DNA recombines.
b.Sister chromatids move to opposite poles.
c.The nuclear membrane disappears.
d.DNA content essentially doubles.
12.Genetic variation, provided through sexual
reproduction, offers more opportunity for offspring
to survive in changing environments. What two aspects
of meiosis provide sources of such variation?
a.mutation and fertilization
b.crossing over and allelic exclusion
c.segregation and independent assortment
d.crossing over and independent assortment of chromosomes
13.Mendel crossed yellow-seeded and green-seeded pea
plants and then allowed the offspring to
self-pollinate to produce an F2 generation. The
results were as follows: 6022 yellow and 2001 green
(8023 total). The allele for green seeds has what
relationship to the allele for yellow seeds?
a.dominant
b.incompletely dominant
c.recessive
d.semidominant
14.The alleles found in haploid organisms cannot be
dominant or recessive. Why?
a.Dominance and recessiveness describe interactions
between two alleles of the same gene in the same
individual.
b.Because only one allele is present, alleles in haploid
organisms are always dominant.
c.Alleles in haploid individuals are transmitted like
mitochondrial DNA or chloroplast DNA.
d.Most haploid individuals are bacteria, and bacterial
genetics is completely different from eukaryotic
genetics.
15.According to the structure of DNA, what component of
that structure is most directly associated with
encoding genetic information?
a.the sequence of phosphates
b.nitrogenous bases and their sequence
c.the arrangement of phosphodiester linkages
d.the order of the deoxyribose sugars
e.all of the above are correct
16.What did one-gene-one-enzyme hypothesis state?
a.Genes are composed of stretches of DNA.
b.Genes are made of protein.
c.Genes code for ribozymes.
d.A single gene codes for a single protein.
17.As scientists were attempting to determine the
structure of the genetic code, Crick and co-workers
found that when three base additions or three base
deletions occurred in a single gene, the wild-type
phenotype was sometimes restored.
These data indicated:
a.The code is triplet.
b.The code contains internal punctuation.
c.AUG is the initiating triplet.
d.The code is overlapping.
e.There are three amino acids per base.
18.What is an anticodon?
a.the part of an RNA message that signals the termination
of translation
b.the part of an RNA message that signals the start of
translation
c.the part of a tRNA message that binds to a
complementary codon in mRNA
d.the part of a tRNA that accepts an amino acid, via a
reaction catalyzed by tRNA synthetase
19.The relationship between a gene and a messenger RNA
is as follows:
a.Genes are made from mRNAs.
b.mRNAs are made from genes.
c.mRNAs make proteins which then code for genes.
d.All genes are made from mRNAs.
e.Messenger RNA is directly responsible for making
Okazaki fragments.
20.Which of the following mutations would have the
greatest negative impact on the protein product of a
gene?
a.a base-pair substitution
b.a deletion of three bases near the middle of the gene
c.a single base insertion near the start of the coding
region of the gene
d.a single base deletion close to the end of the coding
region of a gene
21.When considering the general action of RNA polymerases
in eukaryotes, all of the following macromolecules
are transcribed directly from DNA EXCEPT:
a.tRNAs
b.Exons
c.Introns
d.Proteins
e.mRNAs
22.Which component is not directly involved in the
process known as translation?
a.mRNA
b.tRNA
c.ribosomes
d.DNA
e.codon/anticondon
23.Why are the genes involved in lactose metabolism
considered to be an operon?
a.They occupy adjacent loctions on the E.coli chromosomes.
b.They have a similar function.
c.They are all required for the normal cell function.
d.They are under the control of the same promoter.
24.Full induction of the lac operon occurs when:
a.lactose levels are low and glucose levels are low.
b.lactose levels are low and glucose levels are high.
c.lactose levels are high and glucose levels are low.
d.lactose levels are high and glucose levels are high.
25.CAP is said to be responsible for positive regulation
of the lac operon because:
a.CAP binds cAMP.
b.CAP binds the CAP binding site.
c.CAP prevents binding of the repressor to the operator.
d.CAP bound to the CAP binding site increases the
frequency of transcription initiation by RNA polymerase.
e.Extracellular glucose levels influence the ability of
CAP to bind to the CAP binding site.
--
ANS:
acbbb aabab
ddcab dacbc
dddce
=============================================================================
II.FILL IN THE BLANKS:(2% each)
1.Highly phagocytic cells, like some of your immune cells,
need __________ to degrade their phagocytosed particles.
2.DNA is composed of four nucleotides _________.
3.The mitotic spindle is a microtubular strcture that is
involved in __________.
4.Mitosis is the process of chromosome separation.
Cytoplasm is divided between the two daughter cells in
a process known as ___________.
5.A human somatic (body) cell normally contains 46
chromosomes. How many chromosomes would be expected in
a male's gamete? ______.
6.____________ is the type of replication used by cell to
copy DNA, in which each daughter DNA molecule is composed
of one old strand and one new strand.
7.Okazaki fragments which are short segments of DNA
produced during DNA replication, can be synthesized from
______ strand, oriented in a 5'→3' direction.
8.Lac operon of E.coli was negatively regulated by _______
and positively regulated by _______.
9.The name of the currently accepted model of membrane
structure is ____________________.
--
參考答案:
1.lysosome
2.A T G C
3.?
4.cytokinesis
5.23
6.半保留複製
7.?
8.? ?
9.fluid mosaic model
==============================================================================
以下是林讚標部分，佔三十分
Biology 2005 Fall
(佔30% 每題2分)
1.How is ATP used in biological systems?
a)ATP is found in your diet and is a source of energy.
b)ATP is necessary for enzymes to function. It is
transferred from cell to cell to provide energy.
c)ATP hydrolysis is coupled to endergonic reactions to
drive them.
d)ATP is one of the building blocks of fats.
2.The overall reaction of photosynthesis was expressed
as A and B:
A: CO2 + 2H2O + light → (CH2O)n + H2O +O2
B: 6CO2 + 12H2O + light → C6H12O6 + 6H2O + 6O2
Why B is more accurate than A?
____________________________________
3.Which compound(s) act as shuttles that transfer electrons
between complex proteins?
a)ubiquinone and cytochrome c
b)cytochrome c
c)cytochrome a
d)ubiquinone
4.Why not just stop at pyruvate in the absence of oxygen?
Why lactate?
a)The reaction from pyruvate to lactate converts NADH
back to NAD+, which is required for glycolysis.
b)The reaction from pyruvate to lactate converts ADP to ATP.
c)The reaction from pyruvate to lactate converts ATP to ADP.
d)The reaction from pyruvate to lactate generates energy.
5.In terms of energy production, what is the most important
product produced by the Krebs cycle?
a)ATP
b)CO2
c)NADH and FADH2
d)glucose
6.Which wavelength can oxidizing water?
a)wavelength 700 nm
b)wavelength 680 nm
c)wavelength of both 700 nm and 680 nm
d)wavelength 600 nm
e)wavelength of both 700 nm and 600 nm
7.What is the Emerson enhancement effect of red and
far red light?
___________________________________________________
8.During photosynthesis when PSII is active, electron
motive force is forming resulting
a)stroma pH 8 and thylakoid lumen pH 5
b)stroma pH 8 and thylakoid lumen pH 4
c)stroma low 5 and thylakoid lumen high 8 d)stroma pH 4 and thylakoid lumen pH 7
9.The committed step of glycolysis is phosphofructokinase,
which is inhibited by:
a)high concentration of fructose 6-P
b)high concentration of ADP
c)high concentration of ATP
d)high concentration of fructose 1,6-bisphosphate
10.What do carotenoid do in photosynthesis?
a)they turn northern forests into spectacular display
of yellow and orange.
b)they extend the range of wavelengths that can drive
photosynthesis.
c)they can protect free radicals in photosynthesis.
d)the pigment of light-dependent reactions use CO2 to
make ATP.
11.If the light-independent reactions synthesize glucose,
how can these be cyclic reactions?
a)Because glucose is the first reactant in the cycle.
b)Because glucose is part of the cycle.
c)Glucose is synthesized as a side reaction but the reation
intermediates are regenerated to complete a cycle.
d)Glucose is another name for RuBP.
12.Maximum yield of ATP per molecule of glucose in cellular
respiration is
a)40
b)36
c)30
d)26
13.In prokaryotes, the components of the electron transport
chain are located in the:
a)inner membrane of mitochondria
b)outer membrene of mitochondria
c)in the cell membrane
d)in the matrix of mitochondria
14._____________ reation converts NADP+ to NADPH.
15.Which of the estimate of chloroplast contained in one
cell is reasonable?
a)10-20
b)40-50
c)100-200
d)400-500
--
Form in personality is unable gentle,
only go through and try smelting and tormenting,
soul can just be strengthened; The vision just be distinct;
The great ambition can just be excited; And succeed and can just obtain.
~Helen Keller~
--
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