009-2008

MO640 - Multiple-choice question

Which alternative better represents the Central Dogma of molecular biology?

1. DNA --> (translation) --> Proteins --> (transcription) --> RNA
2. RNA --> (translation) --> Proteins --> (transcription) --> DNA
3. DNA --> (translation) --> RNA --> (transcription) --> Proteins
4. RNA --> (transcription) --> DNA --> (translation) --> Proteins
5. None of the above

Original idea by: Filipe Benevides Netto

015-2008

MO640 - Multiple-choice question

Which alternative contains amino acids only:

1. alanine, valine, glycine, leucine.
2. lipase, amylase, protease, glucoamylase.
3. keratin, mucin, hemoglobin, casein.
4. plasmocyte, limphocyte, leukocyte, thymocyte.
5. None of the above

Original idea by: Pedro Henrique Del Bianco Hokama

016-2008

MO640 - Multiple-choice question

Mark the item that does NOT correspond to one of the compounds linked to the main carbon atom (alpha carbon) of an amino acid:

1. H
2. O
3. NH₂
4. COOH
5. None of the above

Original idea by: Rajiv Santos

023-2008

MO640 - Multiple-choice question

In genetic engineering, expression systems are based on the insertion of a certain gene into a host cell, where it is translated yielding a protein.  Mark the item below that does NOT correspond to an advantage of using bacterial cells as hosts for expression systems:

1. Bacteria have simple physiology
2. High productivity, with up to 10% of the total mass.
3. Proteins in these cells usually fold correctly.
4. Reduced production time, since bacteria grow and multiply quickly.
5. None of the above

Original idea by: Fabio L. Usberti

021-2005

MO640 - Multiple-choice question

How do restriction enzymes help in genome sequencing?

1. They help decrease the time fro clone replication
2. They are used in the PCR technique to warp up the reaction
3. They break the genome into smaller fragments
4. They cut the genome in fragments that code for genes
5. None of the above

Original idea by: Daniel Piccolo Gasparotto

005-2015

MO640 - Multiple-choice question

Codon can be defined as:

  a) Gene region not involved in protein synthesis.
  b) Location of a gene in a chromosome.
  c) Long sequence of nucleotides that translates into a protein.
  d) Sequence of nucleotides that codes for an amino acid.
  e) None of the above

Original idea by: Patrícia Pilisson Côgo
Translation help by: Ramon Maciel

004-2015

MO640 - Multiple-choice question

A diploid cell with 2n = 32 chromosomes, after meiosis, gives origin to:

a) 2 cells with 16 chromosomes each
b) 2 cells with 32 chromosomes each
c) 4 cells with 16 chromosomes each
d) 4 cells with 32 chromosomes each
e) NOTA

Original idea by: Beto Marchesini.
Translation help by: Cicero Luiz Jr.

003-2015

MO640 - Multiple-choice question

Which of these are human cell structures that contain DNA?

A - Mitochondria and Chloroplast
B - Nucleus and Chloroplast
C - Nucleus and Mitochondria
D - Nucleolus and Ribosome
E - None of the Above

Original idea by: Leandro Tacioli

002-2015

MO640 - Multiple-choice question

Which statement about RNA is false?

a) The sugar in an RNA molecule is ribose.
b) There are four kinds of bases that can be found in RNA: adenine, guanine, cytosine and thymine.
c) There are three major classes of RNA: messenger RNA, transfer RNA and ribosomal RNA.
d) The three-dimensional structure of RNA is far more varied than that of DNA.
e) None of the above.

Original idea by: Miriam Ito

001-2015

MO640 - Multiple-choice question

Which kind of nucleic acid is not used in protein synthesis?

a) - DNA
b) - rRNA
c) - mRNA
d) - tRNA
e) - none of the above

Original idea by: Guilherme de Mello Barsoti