開課系所︰農化系
考試時間︰2001.11.19
試題 :
蔡老師出題部分:
I.Match the followings(2%*20=40%)
1.From the following, choose the statement that correctly characterized bound
ribosomes.
(a)Bound ribosomes are enclosed in their own membrane
(b)Bound ribosomes are structurally different from free ribosomes
(c)Bound ribosomes gererally synthesized membrane proteins and secretory
proteins
(d)The most common location for bound ribosomes is the cytoplasmic surface
of the plasma membrane
(e)Bound ribosomes are concentrated in the cisternal space of rough ER
2.Which of the following organelles is LEAST closely associated with the
endomembrane system?
(a)nuclear envelop
(b)chloroplast
(c)Golgi apparatus
(d)plasma membranes
(e)ER
3.Eukaryotic cells are typically largegr than prokaryotic cells because
(a)Their plasma membrane has more control over the movement of materials
into the cells
(b)Their internal membrane system allow compartmentalization of functions
and extra surface area for nutrient exchange and placement of enzymes
(c)Their DNA is localized in the nucleus, whereas protein synthesis occur in
the cytoplasm, separating these competing function
(d)They have more chromosomes and a mitotic process of cell division
(e)They have a cytoskeleton composed of microtubules and microfilaments
4.An animal secretory cell and a photosynthetic leaf cell are similar in all
of the following ways EXCEPT:
(a)They both have a Golgi apparatus
(b)They both have mitochondria
(c)They both have transport proteins for active transport of ions
(d)They both have chloroplasts
(e)They both have a cell membrane
5.According to the fluid mosaic model of membrane structure, proteins of
membrane are mostly
(a)Spread in continuous layer over the inner and outer membrane and outer
surfaces of the membrane
(b)Confines to the hydrophobic core of the membrane
(c)Embedded in a lipid bilayer
(d)Randomly oriented in the membrane, with no fixed inside-outside polarity
(e)Free to depart from the fluid membrane and dissolve in the surrounding
solution
6.The cotransport protein that allow two different substances to pass through
a membrane in the same direction is
(a)usually also a uniport
(b)usually also a biport
(c)usually associated with a proton pump
(d)insensitive to temperature
(e)usually associated with an antiport
7.A particular cell has half as much DNA as some of the other cells in a
mitotically cative tissue. THE CELL in question is most likely in
(a)G1
(b)G2
(c)Prophase
(d)Metaphase
(e)anaphase
8.In some organisms, mitosis occurs without cytokinesis occurring. This will
result in
(a)cells with more than one nucleus
(b)cells that are unusually small
(c)cells lacking nuclei
(d)destruction of chromosomes
(e)cell cycles lacking an S phase
9.A human cell containing 22 autosomes and a Y chromosome is
(a)a somatic cell of a male
(b)a zygote
(c)a somatic cell of a female
(d)a sperm cell
(e)an ovum
10.Homologous chromosomes move to opposite poles of a dividing cell during
(a)mitosis
(b)meiosis I
(c)meiosis II
(d)fertilization
(e)binary fission
11.Multicellular haploid organisms
(a)are typically called sporophytes
(b)produce new cells for growth by meiosis
(c)produce gametes by mitosis
(d)are found only in aquatic environments
(e)are the direct result of syngamy
12.In analyzing the number of different bases in a DNA sample, which result
would be consistent with the base-pairing rules? Explain your answer
(a)A=G
(b)A+G=C+T
(c)A+T=T+G
(d)A=C
(e)T=G
13.The anticodon of a particular tRNA molecule is
(a)complementary to the corresponding mRNA codon
(b)complementary to the corresponding triplet in rRNA
(c)the part of tRNA that bonds to a specific amino acid
(d)changeable, depending on the amino acid that attaches to the tRNA
(e)catalytic, making the tRNA a ribozyme
14.Which of the following processes would never contribute to genetic
variation within a bacterial population?
(a)transduction
(b)transformation
(c)conjugation
(d)Mutation
(e)meiosis
15.In a nucleosome, the DNA is wrapped around
(a)polymerase molecules
(b)ribosomes
(c)histones
(d)the nucleolus
(e)satellite DNA
16.Substitution of the "WRONG" amino acid in the hemoglobin protein results in
the disorder of
(a)Huntington's disease
(b)Tay-Sachs disease
(c)phenylketonuria
(d)hemophilia
(e)sickle-cell disease
17.Which of the following terms is LEAST related to the others?
(a)homozygous
(b)tetrads
(c)recessive
(d)heterozygous
(e)dominant
18.The centromere is a region in which
(a)chromatids are attached to one another
(b)metaphase chromosomes become aligned
(c)chromosomes are grouped during telophase
(d)the nucleus is located prior to mitosis
(e)new spindals microtubules form
19.You would expect the lactose operon to be transcribed when
(a)there is more glucose in the cell than lactose
(b)there is more lactose in the cell than glucose
(c)there is lactose but no glucose in the cell
(d)the cyclic AMP levels are high within the cell
(e)both C and D are correct
20.Recent research has indicated that cancer cells
(a)transform normal cells by altering genes involved in the control of
mitosis
(b)always develop into a tumor
(c)contain more than the normal number of chromosomes
(d)are unable to complete the cell cycle after the S phase
(e)enter and exit the G0 phase three times before theu divide
選擇題解答:cbbde caadb cbaec ebaea
II.Fill in the blanks(2%*15=30%)
1.(1)_____ primer is required to initiate the sunthesis of a new DNA strand.
2.The (2)_____ allele is full expressed in an organism;s appearance.
3.The cell cycle contains (3)_____ phase and (4)_____ phase.
4.By Mendelian law of (5)_____, the two alleles for a character are packed
into separate gametes.
5.A 9:3:3:1 phenotypic trait is characteristics of the (6)_____ generation of
a dihybride cross.
6.The membrane activuty most nearly opposite to exocytosis is (7)_____.
7.The most abundant lipids in most membranes are (8)_____.
8.Facilitated diffusion is diffusion of solutes across a membrane, with the
help of (9)_____.
9.Cell division funct_____ions in (10)_____, growth and repair.
10.(11)_____ is the RNA-directed synthesis of a polypeptide.
11.The ability of a single gene to affect an organism in many ways in called
(12)_____.
12.A chromosome number that is more than two complete chromosome sets is
called (13)_____.
13.During interphase, portions of certain chromosomes in some cells exists in
highly condensed state is called (14)_____.
14.In plants, a zygote receives its plastids from the ovum, not from pollen.
Consequently, offspring receive cytoplasmic gene only from (15)_____.
解答:1.RNA 2.dominate 3.間期,分裂期(忘了英文) 4.Segregation 5.F2
6.endocytosis 7.phospholipids 8.proteins 9.生殖(忘了英文)
10.Translation 11.prieonity 12.pleiotropy(不確定) 13.heterochromatin
14.mother
(林老師出題部分)
(2%*15=30%)
1.You have just discovered a new flower species that has a unique
photosynthetic pigment. The leaves of this plant appear to be reddish
yellow. What wavelengths of visible light are NOT being absorbed by this
pigment?
(a)blue and violet
(b)green, blue, and violet
(c)red and yellow
(d)green and yellow
(e)blue, green, and red
2.Where is ATP synthase located in the mitochondrion?
(a)matrix
(b)outer membrane
(c)ribosomes
(d)cytochrome system
(e)inner membrane
3.The following statements compare combustion with the aerobic respiration of
glucose. Which is FALSE?
(a)Combustion releases nearly all energy as heat and light; respiration
captures some of the energy in chemical bonds.
(b)Combustion uses heat to provide activation energy; respiration uses
enzymes to lower activation energy.
(c)Combustion involves the direct transfer of hydrogen atoms to oxygen;
respiration uses an indirect transfer of hydrogens.
(d)Combustion releases energy from glucose at a more rapid rate than does
respiration.
(e)Combustion releases more total caloric energy from glucoses than does
respiration.
4.Where does the Calvin cycle of photosynthesis take place?
(a)cytoplasm surrounding the chloroplast
(b)stroma of the chloroplast
(c)outer membrane of the chloroplast
(d)thylakoid membrane
(e)chlorophyll molecule
5.In green plants, the primary function of the Calvin cycle is to
(a)use ATP to release carbon dioxide
(b)construct simple sugars from carbon dioxide
(c)split water and release oxygen
(d)use NADPH to release carbon dioxide
(e)transport RuBP out of the chloroplast
6.The direct energy source that drives ATP synthesis during respiratory
oxidative phosphorylation is
(a)the difference in H+ concentrations on opposite sides of the inner
mitochondrial membrane.
(b)the thermodynamically favorable flow of electrons from NADH to the
mitochondrial electron transport carriers.
(c)the final transfer of electrons to oxygens.
(d)oxidation of glucose to CO2 and water.
(e)thermodynamically favorable transfer of phosphate from glycolysis and
Krebs cycle intermediate molecules of ADP.
7.Which of the following intermediary metabolites enters the Krebs cycle and
is formed, in part, by the removal of CO2 from a molecule of pyruvate?
(a)lactate
(b)oxaloacetic acid
(c)acetyl CoA
(d)glyceraldehyde phosphate
(e)citric acid
8.Which metabolic process is most closely associated with intracellular
membranes?
(a)glycolysis
(b)oxidative phosphorylation
(c)substrate-level phosphorylation
(d)ethanolic fermentation
(e)the Krebs cycle
9.Photorespiration lowers the efficiency of photosynthesis by removing which
of the following from the Calvin cycle?
(a)carbon dioxide molecules
(b)ATP molecules
(c)RuBP carboxylase molecules
(d)glyceraldehyde phosphate molecules
(e)ribulose bisphosphate molecules
10.What does chemiosmosis involve?
(a)a proton gradient that drives the redox reactions of electron transport
(b)a proton-motive force that drives the synthesis of ATP
(c)the uptake of NADH produced in glycolysis into the mitochondrion
(d)an ATP synthase that pumps protons across the inner mitochondrial
membrane
(e)the diffusion of water down an electrochemical gradient that drives ATP
synthesis
11.Figure 10.1 shows the absorption spectrum for chlorophyll a and the action
spectrym for photosynthesis. Why are they different?
(有給Figure 10.1)
(a)Green and yellow wavelengths inhibit the absorption of red and blue
wavelengths.
(b)Other pigments absorb light in addition to chlorophyll a.
(c)The two lines are probably the result of inaccurate measurements.
(d)Bright sunlight destroys photosynthetic pigments.
(e)Anaerobic bacteria probably interfered with light absorption.
12.All of the following statements about glycolysis are true EXCEPT:
(a)The end products of glycolysis are CO2 and H2O.
(b)Glycolysis has steps involving oxidation-reduction reactions.
(c)Glycolysis can operate in the complete absence of O2.
(d)Glycolysis makes ATP exclusively through substrate-level
phosphorylations.
(e)The enzymes of glycolysis are located in the cytosol of the cell.
13.The Krebs cycle produces which of the following molecules that then
transfer energy to the electron transport system?
(a)NADH, FADH2, and ATP
(b)CO2 and FAD
(c)NADH and ATP
(d)FADH2 and NADH
(e)ATP and CO2
14.The chemiosomotic process in chloroplasts involves the
(a)establishment of a proton gradient.
(b)diffusion of electrons through the thylakoid membrane.
(c)oxidation of water to produce ATP energy.
(d)reduction of carbon dioxide to glucose by NADPH and ATP.
(e)movement of water by osmosis into the thylakoid space from the stroma.
15.Because bundle-sheath cells are relatively protected from atmospheric
oxygen, the level of ______ is held to a minimum in C4 plants.
(a)oxidative phosphorylation
(b)decarboxylation of malic acid
(c)glycolysis
(d)photorespiration
(e)photosynthesis
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