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Quiz von 22alexpereyra, aktualisiert more than 1 year ago
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Erstellt von 22alexpereyra
vor fast 10 Jahre
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Frage 1
Frage
The result of fertilization is a zygote; what s the result of meiosis in animals?
Antworten
-
clones
-
gametes
-
somatic cells
-
diploid cells
-
gametophytes
Frage 2
Frage
Which of the following is not associated with mitosis?
Antworten
-
interphase
-
kinetochore
-
cell plate
-
tetrad
-
chromatin
Frage 3
Frage
In mitosis if each daughter cell has 20 chromosomes how many chromosomes would each parent cell have?
Antworten
-
5
-
10
-
20
-
40
-
80
Frage 4
Frage
Which of the following statements are true of metaphase?
Antworten
-
The duplication of chromosomes occur
-
homologous chromosomes cross over
-
the chromosomes are aligned at the spindle equator
-
the chromosomes move to opposite poles of the cell
-
the nuclear membrane reforms
Frage 5
Frage
Which of the following statements are false?
Antworten
-
metastasis is the spread of cancer from one location to another in the body
-
2 types of tumors are benign and malignant
-
cancer cells divide rapidly to produce a mass of cells
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proto oncogenes are mutated genes
-
tumor suppressor genes make p53 protein that inhibits mitosis
Frage 6
Frage
The chromosome number of an egg in drosophila melanogastor is 4 what is the chromosome number of a somatic cell?
Antworten
-
2
-
4
-
8
-
16
-
32
Frage 7
Frage
Order of cell cycle?
Antworten
-
DNA Replication, Telophase, Cytokinesis, and 2 identical daughter cells
-
nothing else
Frage 8
Frage
Which of the following does not produce genetic variation?
Antworten
-
sexual reproduction
-
crossing over
-
independent assortment
-
random fertilization
-
transcription
Frage 9
Frage
Circle with 4 Xs in four square, what stage of meiosis?
Antworten
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prophase 1
-
metaphase 2
-
prophase 2
-
metaphase 1
-
anaphase 2
Frage 10
Frage
Centromeres uncouple and chromatids are separated from each other
Antworten
-
statement true of mitosis
-
statement true of meiosis 1
-
statement true of meiosis 2
-
statement true of mitosis and meiosis 1
-
statement true of mitosis and meiosis 2
Frage 11
Frage
Which of the following is true?
Antworten
-
Spindle fibers are made up of centrioles
-
Spindle fibers bring together sister chromatids
-
Spindle fibers attach to chromosomes during anaphase
-
spindle fibers are always present in a cell
-
spindle fibers are made of microtubules
Frage 12
Frage
A karyotype shows all of the following characteristics of an individual except
Antworten
-
gender
-
species
-
down syndrome
-
number of chromosomes
-
ploidy number
Frage 13
Frage
What is the arrow pointing at in this figure (x with arrow)
Antworten
-
sister chromatid
-
sister chromosome
-
chromosome
-
centromere
-
homologous chromosomes
Frage 14
Frage
The correct flow of info from gene to phenotypic expression is
Antworten
-
RNA-DNA-protein-trait
-
trait-protein-DNA-RNA
-
DNA-RNA-protein-trait
-
protein-DNA-RNA-trait
-
trait-RNA-protein-DNA
Frage 15
Frage
Which enzyme is responsible for joining strands of DNA during replication
Antworten
-
DNA polymerase
-
DNA ligase
-
topoisomerase
-
primase
-
helicase
Frage 16
Frage
An insertion of a base pair in a coding region of a gene can result in a _____________ mutation where the reading of codons by the ribosome is altered
Antworten
-
frameshift
-
wobble
-
base-pair substitution
-
thymine dimer
-
nondisjunction
Frage 17
Frage
Which component is found in DNA molecules but not in RNA molecules
Antworten
-
ribose
-
thymine
-
nitrogen containing bases
-
phosphate group
-
guanine
Frage 18
Frage
All of the following occur during translation except
Antworten
-
helicase opens the strand for copying
-
an initiator tRNA binds to a ribosomal subunit and the mRNA
-
the initiation complex forms when a large ribosomal subunit joins the initiator tRNA and the mRNA
Frage 19
Frage
All of the following are post-transcription modifications f eukaryotic mRNA except
Antworten
-
introns are removed
-
exons may be spliced
-
peptide bonds are formed
Frage 20
Frage
prokaryotic DNA found outside the main chromosome is known as a
Antworten
-
PCR
-
cDNA
-
primer
-
DNA chip
-
plasmid
Frage 21
Frage
Master genes that control the formation of specific body parts are
Antworten
-
enhancers
-
promoters
-
exons
-
operons
-
homoeotic
Frage 22
Frage
PCR is used to
Antworten
-
isolate mutations
-
sequence DNA
-
mass produce a certain DNA fragment
-
attach a tracer to a segment of DNA
-
cut DNA at specific nucleotide sequences
Frage 23
Frage
Series of 3 nucleotide bases on a tRNA molecule that binds with mRNA
Antworten
-
anticodon
-
RNA Polymerase
-
rRNA
-
exon
-
operator
Frage 24
Frage
Enzyme responsible for pairing RNA bases with the DNA template
Antworten
-
RNA Polymerase
-
anticodon
-
rRNA
-
exon
-
operator
Frage 25
Frage
In prokaryotic cells this is is the section of DNA that will bind a repressor in order to control gene population
Antworten
-
operator
-
RNA Polymerase
-
anticodon
-
exon
Frage 26
Frage
The type of RNA found in ribosomes
Antworten
-
rRNA
-
RNA Polymerase
-
operator
-
exon
-
anticodon
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