1000 pt test

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Danielvu28
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151052
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1000 pt test
Updated:
2012-04-30 00:33:48
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bio
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1000 pt test
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  1. During normal mitotic cell division, a parent cell that has 14 chromosomes will produce two
    daughter cells each containing...
    14 CHROMOSOMES
  2. When during the cell cycle is a cell’s DNA replicated?
    S Phase
  3. Given a graphic of a chromosome be able to identify the sister chromatids and the centromere.
    a
  4. During which phases of mitosis are chromosomes visible?
    PROPHASE, METAPHASE, EARLY ANAPHASE
  5. In animal cells what is the role of centrioles (cellular anchors)?
    TO CONNECT SPINDLE FIBERS
  6. What is an advantage of sexual reproduction over asexual reproduction?
    IT PRODUCES GENETIC DIVERSITY
  7. How do embryonic cells specialize into heart muscle, skin, neurons, etc.?
    THROUGH A PROCESS CALLED DIFFERENTIATION
  8. What have cancer cells lost control of?
    THEIR ABILITY TO CONTROL THEIR GROWTH RATE AND THEIR DIVIDING RATE
  9. Why are stem cells important?
    THEY HAVE THE POTENTIAL TO DEVELOP INTO OTHER CELL TYPES.
  10. What are faulty/untrue examples of what stem cell therapy can achieve?
    • DEVELOPING A VACCINE FOR CANCER
    • GENERATING EMBRYOS
    • INCREASING A PERSON’S INTELLIGENCE
  11. In eukaryotes where is the DNA?
    NUCLEUS
  12. What shocking event occurred in Griffith’s experiment?
    HARMLESS BACTERIA BECAME HARMFUL/LETHAL
  13. What did Avery conclude about transformation?
    DNA IS THE TRANSFORMING FACTOR.
  14. Bacteriophage are viruses...what do they infect?
    BACTERIA
  15. Why did Hershey and Chase label viral DNA with radioactive phosphorus and not radioactive
    sulfur?
    DNA CONTAINS PHOSPORUS AND NO SULFUR
  16. What great scientist made groundbreaking x-ray diffraction photographs of DNA?
    ROSALIND FRANKLIN
  17. What are DNA’s nucleotides (A,T,C,G) made up of?
    DEOXYRIBOSE-PHOSPHATE GROUP-NITROGENOUS BASE
  18. What is Chargaff’s Rule?
    • The percent of A in a DNA sample equals that of T. The percent of C in a DNA sample equals
    • that of G.
  19. Given this DNA section TAGCTGAC what is the complimentary strand?
    ATCGACTG
  20. What does DNA replication produce?
    2 identical copies of DNA. Each copy has one new strand and one original strand.
  21. Which is the correct sequence of the transfer of information in most organisms?
    DNA -> RNA -> Protein
  22. Which nucleotide distinguishes RNA from DNA?
    URACIL
  23. What is the product of transcription?
    mRNA MOLECULES
  24. What is the template for the building of mRNA?
    DNA (Active Strand)
  25. Which type of RNA brings the genetic information from the nucleus to other parts of the cell?
    mRNA
  26. What happens during translation?
    THE CELL USES mRNA CODE TO MAKE PROTEINS.
  27. During translation what determines the amino acid that is added to the growing polypeptide?
    THE CODON ON THE mRNA AND THE ANTICODON ON THE tRNA
  28. How many nucleotides are needed to specify one amino acid?
    3 NUCLEOTIDES = 1 CODON
  29. There are 64 codons and 20 amino acids. How can this be?
    • SEVERAL DIFFERENT CODONS CAN SPECIFY THE SAME AMINO ACID (This
    • phenomenon is called redundancy.)
  30. What is the impact of the majority/day-to-day mutations?
    NO EFFECT (Evolution has established defenses against most mutations.)

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