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Molecular Genetics and Cells

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Quiz on Molecular Genetics and Cells, created by 22alexpereyra on 16/12/2014.
22alexpereyra
Quiz by 22alexpereyra, updated more than 1 year ago
22alexpereyra
Created by 22alexpereyra almost 10 years ago
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Resource summary

Question 1

Question
The result of fertilization is a zygote; what s the result of meiosis in animals?
Answer
  • clones
  • gametes
  • somatic cells
  • diploid cells
  • gametophytes

Question 2

Question
Which of the following is not associated with mitosis?
Answer
  • interphase
  • kinetochore
  • cell plate
  • tetrad
  • chromatin

Question 3

Question
In mitosis if each daughter cell has 20 chromosomes how many chromosomes would each parent cell have?
Answer
  • 5
  • 10
  • 20
  • 40
  • 80

Question 4

Question
Which of the following statements are true of metaphase?
Answer
  • 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

Question 5

Question
Which of the following statements are false?
Answer
  • 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
  • proto oncogenes are mutated genes
  • tumor suppressor genes make p53 protein that inhibits mitosis

Question 6

Question
The chromosome number of an egg in drosophila melanogastor is 4 what is the chromosome number of a somatic cell?
Answer
  • 2
  • 4
  • 8
  • 16
  • 32

Question 7

Question
Order of cell cycle?
Answer
  • DNA Replication, Telophase, Cytokinesis, and 2 identical daughter cells
  • nothing else

Question 8

Question
Which of the following does not produce genetic variation?
Answer
  • sexual reproduction
  • crossing over
  • independent assortment
  • random fertilization
  • transcription

Question 9

Question
Circle with 4 Xs in four square, what stage of meiosis?
Answer
  • prophase 1
  • metaphase 2
  • prophase 2
  • metaphase 1
  • anaphase 2

Question 10

Question
Centromeres uncouple and chromatids are separated from each other
Answer
  • 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

Question 11

Question
Which of the following is true?
Answer
  • 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

Question 12

Question
A karyotype shows all of the following characteristics of an individual except
Answer
  • gender
  • species
  • down syndrome
  • number of chromosomes
  • ploidy number

Question 13

Question
What is the arrow pointing at in this figure (x with arrow)
Answer
  • sister chromatid
  • sister chromosome
  • chromosome
  • centromere
  • homologous chromosomes

Question 14

Question
The correct flow of info from gene to phenotypic expression is
Answer
  • RNA-DNA-protein-trait
  • trait-protein-DNA-RNA
  • DNA-RNA-protein-trait
  • protein-DNA-RNA-trait
  • trait-RNA-protein-DNA

Question 15

Question
Which enzyme is responsible for joining strands of DNA during replication
Answer
  • DNA polymerase
  • DNA ligase
  • topoisomerase
  • primase
  • helicase

Question 16

Question
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
Answer
  • frameshift
  • wobble
  • base-pair substitution
  • thymine dimer
  • nondisjunction

Question 17

Question
Which component is found in DNA molecules but not in RNA molecules
Answer
  • ribose
  • thymine
  • nitrogen containing bases
  • phosphate group
  • guanine

Question 18

Question
All of the following occur during translation except
Answer
  • 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

Question 19

Question
All of the following are post-transcription modifications f eukaryotic mRNA except
Answer
  • introns are removed
  • exons may be spliced
  • peptide bonds are formed

Question 20

Question
prokaryotic DNA found outside the main chromosome is known as a
Answer
  • PCR
  • cDNA
  • primer
  • DNA chip
  • plasmid

Question 21

Question
Master genes that control the formation of specific body parts are
Answer
  • enhancers
  • promoters
  • exons
  • operons
  • homoeotic

Question 22

Question
PCR is used to
Answer
  • isolate mutations
  • sequence DNA
  • mass produce a certain DNA fragment
  • attach a tracer to a segment of DNA
  • cut DNA at specific nucleotide sequences

Question 23

Question
Series of 3 nucleotide bases on a tRNA molecule that binds with mRNA
Answer
  • anticodon
  • RNA Polymerase
  • rRNA
  • exon
  • operator

Question 24

Question
Enzyme responsible for pairing RNA bases with the DNA template
Answer
  • RNA Polymerase
  • anticodon
  • rRNA
  • exon
  • operator

Question 25

Question
In prokaryotic cells this is is the section of DNA that will bind a repressor in order to control gene population
Answer
  • operator
  • RNA Polymerase
  • anticodon
  • exon

Question 26

Question
The type of RNA found in ribosomes
Answer
  • rRNA
  • RNA Polymerase
  • operator
  • exon
  • anticodon
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