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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
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