Biology Final Part 1

40 Questions | Total Attempts: 100

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Biology Final Part 1

Questions and Answers
  • 1. 
    The different forms of a gene are called
    • A. 

      Traits

    • B. 

      Pollinations

    • C. 

      Alleles

    • D. 

      Hybrids

  • 2. 
    If a pea plant’s alleles for height are tt, what is true of its parents?
    • A. 

      Both parents were tall

    • B. 

      Both parents were short

    • C. 

      Both parents contributed a recessive allele

    • D. 

      Both parents contributed a dominant allele

  • 3. 
    When you flip a coin, what is the probability that it will come up tails?
    • A. 

      1

    • B. 

      1/2

    • C. 

      1/4

    • D. 

      1/8

  • 4. 
    Organisms that have two identical alleles for a particular trait are said to be
    • A. 

      Hybrid

    • B. 

      Homozygous

    • C. 

      Heterozygous

    • D. 

      Dominant

  • 5. 
    In the Punnett square shown in Figure 11–1, which of the following is true about the offspring  resulting from the cross?
    • A. 

      About half are expected to be short

    • B. 

      All are expected to be short

    • C. 

      About three fourths are expected to be tall

    • D. 

      All are expected to be tall

  • 6. 
    Gregor Mendel’s principles of genetics apply to
    • A. 

      Plants only

    • B. 

      Animals only

    • C. 

      pea plants only

    • D. 

      All organisms

  • 7. 
    Roan cattle show codominance for the color of their hair. There are alleles for red hair and white  hair. What would you expect a heterozygous roan bull to look like if the trait showed incomplete  dominance instead? 
    • A. 

      The hairs would be red

    • B. 

      The hairs would be white

    • C. 

      There would be both red and white hairs

    • D. 

      The hairs would be pink

  • 8. 
    In rabbits, there are four different versions of the gene for coat color. What pattern of  inheritance is this?
    • A. 

      Incomplete dominance

    • B. 

      Polygenic inheritance

    • C. 

      Codominance

    • D. 

      Multiple alleles

  • 9. 
    What determines the color of western white butterflies?
    • A. 

      Genes alone

    • B. 

      The environment alone

    • C. 

      Temperature and genes

    • D. 

      Exposure to sunlight and genes

  • 10. 
    The number of chromosomes in a gamete is represented by the symbol
    • A. 

      Z

    • B. 

      X

    • C. 

      N

    • D. 

      Y

  • 11. 
    Gametes are produced by the process of
    • A. 

      Mitosis

    • B. 

      Meiosis

    • C. 

      Crossing-over

    • D. 

      Replication

  • 12. 
    What stores information in a cell?
    • A. 

      Proteins

    • B. 

      Carbohydrates

    • C. 

      Lipids

    • D. 

      DNA

  • 13. 
    In what way is DNA like a book?
    • A. 

      DNA has information organized with an kind of index

    • B. 

      DNA has stored information, that can be copied and passed on

    • C. 

      DNA has information wrapped in an identifying cover

    • D. 

      DNA has information that is periodically updated

  • 14. 
    Figure 12–2 shows the structure of
    • A. 

      A DNA molecule

    • B. 

      An amino acid

    • C. 

      A RNA molecule

    • D. 

      A protein

  • 15. 
    Which of the following is a nucleotide found in DNA?
    • A. 

      Adenine + phosphate group + thymine

    • B. 

      Cytosine + phosphate group + guanine

    • C. 

      Deoxyribose + phosphate group + polymerase

    • D. 

      Deoxyribose + phosphate group + cytosine

  • 16. 
    Rosalind Franklin contributed to the understanding of DNA by
    • A. 

      Producing images of DNA molecules using X-rays

    • B. 

      Figuring out that DNA strands form a double helix

    • C. 

      Conducting experiments that showed which nucleotides are complementary

    • D. 

      Finding that DNA was nucleic acid made up of a long chain of individual nucleotides

  • 17. 
    Which scientist(s) figured out that the shape of a DNA molecule is a double helix?
    • A. 

      Hershey and Chase

    • B. 

      Griffith

    • C. 

      Watson and Crick

    • D. 

      Franklin

  • 18. 
    Which of the following forms a base pair with thymine?
    • A. 

      Deoxyribose

    • B. 

      Adenine

    • C. 

      Guanine

    • D. 

      Cytosine

  • 19. 
    During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the  bases
    • A. 

      TCGAAC

    • B. 

      GATCCA

    • C. 

      AGCTTG

    • D. 

      GAUCCA

  • 20. 
    What enzyme works to add DNA to ends of chromosomes in rapidly dividing cells such as those  found in an embryo, to prevent genes from being lost during replication?
    • A. 

      DNA polymerase

    • B. 

      Histones

    • C. 

      Telomerase

    • D. 

      Chromatin

  • 21. 
    In eukaryotes, DNA
    • A. 

      Is located in the nucleus

    • B. 

      Floats freely in the cytoplasm

    • C. 

      Is located in the ribosomes

    • D. 

      Is circular

  • 22. 
    RNA contains the sugar
    • A. 

      Ribose

    • B. 

      Deoxyribose

    • C. 

      Glucose

    • D. 

      Lactose

  • 23. 
    Which nucleotide in Figure 13–1 indicates the nucleic acid above is RNA?
    • A. 

      Uracil

    • B. 

      Guanine

    • C. 

      Cytosine

    • D. 

      Adenine

  • 24. 
    Which type of RNA brings the information in the genetic code from the nucleus to other parts  of the cell?
    • A. 

      RRNA

    • B. 

      TRNA

    • C. 

      MRNA

    • D. 

      RNA polymerase

  • 25. 
    What is produced during transcription?
    • A. 

      RNA molecules

    • B. 

      DNA molecules

    • C. 

      RNA polymerase

    • D. 

      Proteins

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