1799255
Descrição
Quiz por 22alexpereyra, atualizado more than 1 year ago
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Criado por 22alexpereyra
mais de 9 anos atrás
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Questão 1
Questão
The result of fertilization is a zygote; what s the result of meiosis in animals?
Responda
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clones
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gametes
-
somatic cells
-
diploid cells
-
gametophytes
Questão 2
Questão
Which of the following is not associated with mitosis?
Responda
-
interphase
-
kinetochore
-
cell plate
-
tetrad
-
chromatin
Questão 3
Questão
In mitosis if each daughter cell has 20 chromosomes how many chromosomes would each parent cell have?
Responda
-
5
-
10
-
20
-
40
-
80
Questão 4
Questão
Which of the following statements are true of metaphase?
Responda
-
The duplication of chromosomes occur
-
homologous chromosomes cross over
-
the chromosomes are aligned at the spindle equator
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the chromosomes move to opposite poles of the cell
-
the nuclear membrane reforms
Questão 5
Questão
Which of the following statements are false?
Responda
-
metastasis is the spread of cancer from one location to another in the body
-
2 types of tumors are benign and malignant
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cancer cells divide rapidly to produce a mass of cells
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proto oncogenes are mutated genes
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tumor suppressor genes make p53 protein that inhibits mitosis
Questão 6
Questão
The chromosome number of an egg in drosophila melanogastor is 4 what is the chromosome number of a somatic cell?
Responda
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2
-
4
-
8
-
16
-
32
Questão 7
Questão
Order of cell cycle?
Responda
-
DNA Replication, Telophase, Cytokinesis, and 2 identical daughter cells
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nothing else
Questão 8
Questão
Which of the following does not produce genetic variation?
Responda
-
sexual reproduction
-
crossing over
-
independent assortment
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random fertilization
-
transcription
Questão 9
Questão
Circle with 4 Xs in four square, what stage of meiosis?
Responda
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prophase 1
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metaphase 2
-
prophase 2
-
metaphase 1
-
anaphase 2
Questão 10
Questão
Centromeres uncouple and chromatids are separated from each other
Responda
-
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
Questão 11
Questão
Which of the following is true?
Responda
-
Spindle fibers are made up of centrioles
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Spindle fibers bring together sister chromatids
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Spindle fibers attach to chromosomes during anaphase
-
spindle fibers are always present in a cell
-
spindle fibers are made of microtubules
Questão 12
Questão
A karyotype shows all of the following characteristics of an individual except
Responda
-
gender
-
species
-
down syndrome
-
number of chromosomes
-
ploidy number
Questão 13
Questão
What is the arrow pointing at in this figure (x with arrow)
Responda
-
sister chromatid
-
sister chromosome
-
chromosome
-
centromere
-
homologous chromosomes
Questão 14
Questão
The correct flow of info from gene to phenotypic expression is
Responda
-
RNA-DNA-protein-trait
-
trait-protein-DNA-RNA
-
DNA-RNA-protein-trait
-
protein-DNA-RNA-trait
-
trait-RNA-protein-DNA
Questão 15
Questão
Which enzyme is responsible for joining strands of DNA during replication
Responda
-
DNA polymerase
-
DNA ligase
-
topoisomerase
-
primase
-
helicase
Questão 16
Questão
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
Responda
-
frameshift
-
wobble
-
base-pair substitution
-
thymine dimer
-
nondisjunction
Questão 17
Questão
Which component is found in DNA molecules but not in RNA molecules
Responda
-
ribose
-
thymine
-
nitrogen containing bases
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phosphate group
-
guanine
Questão 18
Questão
All of the following occur during translation except
Responda
-
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
Questão 19
Questão
All of the following are post-transcription modifications f eukaryotic mRNA except
Responda
-
introns are removed
-
exons may be spliced
-
peptide bonds are formed
Questão 20
Questão
prokaryotic DNA found outside the main chromosome is known as a
Responda
-
PCR
-
cDNA
-
primer
-
DNA chip
-
plasmid
Questão 21
Questão
Master genes that control the formation of specific body parts are
Responda
-
enhancers
-
promoters
-
exons
-
operons
-
homoeotic
Questão 22
Questão
PCR is used to
Responda
-
isolate mutations
-
sequence DNA
-
mass produce a certain DNA fragment
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attach a tracer to a segment of DNA
-
cut DNA at specific nucleotide sequences
Questão 23
Questão
Series of 3 nucleotide bases on a tRNA molecule that binds with mRNA
Responda
-
anticodon
-
RNA Polymerase
-
rRNA
-
exon
-
operator
Questão 24
Questão
Enzyme responsible for pairing RNA bases with the DNA template
Responda
-
RNA Polymerase
-
anticodon
-
rRNA
-
exon
-
operator
Questão 25
Questão
In prokaryotic cells this is is the section of DNA that will bind a repressor in order to control gene population
Responda
-
operator
-
RNA Polymerase
-
anticodon
-
exon
Questão 26
Questão
The type of RNA found in ribosomes
Responda
-
rRNA
-
RNA Polymerase
-
operator
-
exon
-
anticodon
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