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Exam 3
PLB 115 Exam 3
49
Biology
Undergraduate 1
04/12/2015

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Term
If a bacterial protein contains 5 amino acids, the messenger RNA that would direct its manufacture would have at least ___________ nucleotides.
Definition
15
Term
The order in which the stages of mitosis proceed is
Definition
prophase, metaphase, anaphase, telophase, interphase.
Term
Both a base and a phosphate are attached ____ in a nucleotide.
Definition
to a sugar
Term
Egg cells are fertilized in the
Definition

oviduct.
Term
The cells that become eggs that a woman ovulates at age 40 were initially produced
Definition
when she was a fetus
Term
When a gene picks up nucleotides to build its noncoding strand, this is known as
Definition
DNA replication
Term
These enzymes have the ability to cut DNA at places where specific sequences of nucleotides occur.
Definition
restriction
Term
During which of the following stages of meiosis is the cell diploid?
Definition
metaphase I
Term
In meiosis, centromeres split in
Definition
anaphase II
Term
Homologous chromosomes separate during
Definition
The correct answer is:
anaphase I
Term
The process of translation can be broken down into three basic steps. Which of the following is NOT one of these
Definition
translocation
Term
Chromosomes move toward the poles during
Definition
anaphase II.
Term
During which of the following stages of the cell cycle does DNA replication take place?
Definition
interphase
Term
If a body cell has 8 chromosomes (e.g., fruit fly), how many pairs will form during Prophase II?
Definition
4
Term
The structure that transports sperm cells from the epididymis to the urethra is the
Definition
vas deferens.
Term
Sperm cells are moved out of the testes in the
Definition
vas deferens
Term
In humans, egg production (oogenesis) differs from sperm production (spermatogenesis) in that oogenesis
Definition
produces polar bodies.
Term
When the chromosomes have moved around so that they all lie on a plane in the middle of the cell, the stage is called
Definition
metaphase
Term
During prophase ____ are formed
Definition
spindles
Term
Which of the following most closely describes the cervix?
Definition
a region between the uterus and vagina
Term
If a bacterial protein contains 5 amino acids, the messenger RNA that would direct its manufacture would have at least ___________ nucleotides.
Definition
15
Term
The technique used to accomplish cloning in vertebrates is called
Definition
somatic cell nuclear transfer.
Term
An organelle found in animals and involved in cell division is the
Definition
centriole
Term
During which of the following stages of meiosis is the cell haploid?
Definition
anaphase II
Term
A single-stranded, straight chain copy of a coding strand of DNA that comes from the process of transcription is
Definition
mRNA
Term
DNA that contains "foreign" genes from another organism
Definition
recombinant DNA
Term
When homologous chromosomes are at the equator of the cell, it is in
Definition
metaphase I.
Term
Which of these results in the production of only one gamete as a result of meiosis?
Definition
oogenesis
Term
Spindles disappear during
Definition
telophase II.
Term
Centromeres separate allowing the chromatids to move toward the poles in
Definition
Anaphase II.
Term
Identical twins
Definition
are the result of one fertilized egg dividing to become two individuals.
Term
DNA replication occurs during
Definition
S phase of interphase.
Term
If a drug interferes with the activities of transfer RNA, which one of the following is likely to occur?
Definition
Proteins will not be produced.
Term
Bacterial cells pick up a recombinant DNA by taking it in through their outer cell boundaries using a process called
Definition
transformation
Term
Oogenesis normally produces ____ gamete(s) from one germ cell
Definition
1
Term
During which stage do two tRNAs properly align their two amino acids so that they may be chemically attached to one another?
Definition
translation
Term
In what mitotic stage does the cytoplasm divide?
Definition
telophase
Term
This is the process a cell goes through to become a particular cell type, based on the proteins that it expresses and is more-or-less a permanent condition.
Definition
differentiation
Term
The centromere divides during
Definition
anaphase II
Term
Chromosome number reduces during
Definition
meiosis I
Term
This is the process a cell goes through to select which genes it will express.
Definition
determination
Term
During which of the following stages of meiosis does the cell contain the greatest amount of DNA
Definition
prophase I
Term
Which one of the following is necessary for messenger RNA to be formed in the nucleus?
Definition
RNA polymerase must be present and functioning.
Term
This is the more technical term used by scientists to describe the carrier DNA molecule used when cloning genes.
Definition
vector
Term
What is the term used to describe segments of eukaryotic pre-mRNA that are removed in the final synthesis of mature mRNA?
Definition
introns
Term
The process of manufacturing RNA from template DNA is
Definition
transcription
Term
If an organism proceeds through meiosis and produces sex cells with 32 chromosomes (e.g., a horse), the cells of the horse's brain will each contain ______ chromosomes.
Definition
64
Term
This occurs when insertions or deletions cause the ribosome to read the wrong sets of three nucleotides.
Definition
frameshift
Term
Nondisjunction in humans can result in
Definition
47 chromosomes
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