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當然~這是考古題~考古題~
答案為黃色字體~~
今天先 po 考卷A, 改天在 po 考卷B吧!
================================這是考古題分隔線==============================
General Biology Midterm Exam (A)
Match the followings: (2% each)
01.Transcription of the structural genes in an inducible operon
A) Occur all the time.
B) Starts when the pathway's substrate is present.
C) Starts when the pathway's product is present.
D) Stops when the pathway's product is present
E) Does not produce enzymes
02.An animal secretary 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
03.During the cell cycle, chromosome replicate occurs during which phase
A) G1 phase
B) G2 phase
C) S phase
D) M phase
04.Which of the following is/are not found in a prokaryotic cell?
A) Ribosomes
B) plasma membrane
C) Mitochondria
D) A) and C)
E) A), B), and C)
05.Organelles
A) Are membrane - bound compartments
B) Are tpical of eukaryotic cells, not prokaryotic cells.
C) Separate incompatible reactions in a cell.
D) Allow passage of molecules in sequence from one to another.
E) All of the above
06.Which molecule is NOT part of the cell membranes?
A) Lipids
B) Proteins
C) Carbonhydrates
D) Nucleic Acid
E) Phosphate group
07.What is the attachment site for RNA polymerase?
A) Structural gene region
B) Promote region
C) Initiation region
D) Operator region
E) Regulator region
08.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
09.Why are the lipid bilayers in cells called "semipermeable?"
A) They are not really all that permeable.
B) Their permeability is temperature dependent
C) Their permeability changes with their molecular composition
D) They are permeable to some substances but not others
10.Which of the following is NOT true of secreted proteins?
A) They are synthesized in the rough ER
B) They are transported through the endomembrane system in membrane-bound
transport organelles
C) They are transported from the golgi apparatus to the ER
D) They contain a signal sequence that directs them into the ER
11.How do cancer cells differ from normal cells?
A) Uncontrolled division and invasiveness
B) Uncontrolled division only-many normal cell types are invasive
C) Invasiveness only-many normal cell types row in an uncontrolled fashion
D) Interphase and M phase
12.Which of the following statements about enhancers is correct?
A) They contain a consensus sequence called a TATA box
B) They are located only in 5' flanking regions
C) They are located only in introns
D) They are found in a variety of locations, and are active in any
orientation.
13.Where and how are Okazaki fragments synthesized?
A) At the leading strand, oriented in a 5' → 3' direction
B) At the leading strand, oriented in a 3' → 5' direction
C) At the lagging strand, oriented in a 3' → 5' direction
D) At the lagging strand, oriented in a 5' → 3' direction
14.Which of the following is a frameshift mutation?
A) THERATATETHECAT
B) THETATATETHERAT
C) THECATARETHECAT
D) THECATATTETHECAT
E) CATATETHECAT
15.Alleles are
A) Different molecular forms of a gene
B) Different molecular forms of a chromosome
C) Self-fertilizing, true-breeding homozygotes
16.Which of the following events contributes to phenotypic variation in a
population?
A) Independent assortment
B) Cross over
C) Changes in chromosome structure and function
D) All of the above
17.A gamate affected by nondisjuction would have
A) A change from the normal chromose number
B) One extra or one missing chromosome
C) The potential fir a genetic disorder
D) All of the above
18.Mitosis and cytoplasmic division function in
A) Asexual reproduction of single-celled eukaryotes
B) Growth, tissue repair and sometimes asexual reproduction in many
multicelled eukaryotes
C) Gamete formation in prokaryotes
D) Both A) and B)
19.Sexual reproduction requires
A) Meiosis
B) Gamete formation
C) Fertilization
D) All of the above
20.One species' DNA differs from other in its
A) Sugars
B) Phosphate groups
C) Base sequences
D) Proteins
Fill in the Blanks: (2% each)
01.The most widely accepted model for the membrane is the fluid-mosaic model
02.Chromosomes become visible in the prophase of cell cycle.
03.A true-breeding tall, purple-flowered pea plant (TTPP) is cross with a
true-breeding dwarf, white flowered plant (ttpp). The true breeding parents
are referred to as the P generation. Their hybride offspring are
the F1 generation. The phenotypr of the F1 generation is tall,
purple-flowered plant.
04.Meiosis reduces chromosome number from diploid to haploid.
05.List any two patters of inheritance not described by Mendel, but this laws
of segregation and independent assortment can be extended to these more
complex cases sex-linked inheritance, Blood-group ingeritance.
06.Osmosis is the passive transport of water.
07.In bacteria, regulated genes are often clustered into units called operon
08.semi-conservative model of DNA replication predicts that the two
daughter DNA molecules each have one old strand from the parental DNA and
one newly formed strand.
09.Homologous chromosomes move to opposite poles of a dividing cell during
anaphase
10.The two principal organelles of the endomembrane system are rough ER
and golgi apparatus
11.Two principles of genetic proposed by Model are Independent assortment
and Laws of segregation
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