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Which of the following diseases is not hereditary?
a. sickle-cell anemia
b. cystic fibrosis
c. diabetes
d. arthritis
e. All of the above are hereditary.
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E
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Which genetic characteristics did Gregor Mendel omit from his studies?
a. hairy toe knuckles
b. pod texture
c. flower color
d. height
e. hybrids
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A
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What is the cellular function of deoxyribonucleic acid?
a. provides structure to the nucleus
b. governs all chemical functions
c. carries inheritance information
d. serves as an antibiotic for bacteria
e. b and c
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E
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Transcription of DNA
a. supplies information that runs cell chemistry.
b. divides the cell through mitosis.
c. determines the genetic code.
d. destroys extra nucleotides.
e. all of the above
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A
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Which statement about viruses is false?
a. Viruses kill the cell.
b. Viruses are RNA segments coated with protein.
c. Viruses can metabolize.
d. Viruses are DNA segments coated with protein.
e. Viruses use the cell’s enzymes.
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C
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Which of the following does not have to contain a DNA molecule?
a. gene
b. chromosome
c. cell
d. virus
e. zygote
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D
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Which does not follow from Mendel’s work?
a. All organisms employ the same genetic code.
b. Traits can be either dominant or recessive.
c. Units of inheritance pass traits from parents to offspring.
d. Both parents contribute equally to the traits of the offspring.
e. Tallness is dominant over shortness in pea plants.
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A
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The "double helix" of DNA refers to the
a. hydrogen bonding of the nucleotides.
b. twisting of the ladder-like double strands of bases.
c. hexagon shape of the carbon atoms.
d. fact that DNA is at the core of all medical studies.
e. unique chemistry of the RNA bases.
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B
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Which is not part of a nucleotide?
a. recessive gene
b. phosphate group
c. adenine
d. sugar
e. guanine
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A
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Which of the following statements about DNA is false?
a. DNA molecules are made of smaller molecules.
b. Every living cell on earth contains DNA molecules.
c. DNA strands contain alternating sugar and phosphate molecules.
d. RNA is the mirror opposite of DNA.
e. Hydrogen bonds join the two sides of the DNA ladder.
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D
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What did Mendel's genetic model predict?
a. Parents are equally important in the transfer of genetic information.
b. The male contributes most of the dominant traits.
c. The female contributes most of the dominant traits.
d. Physical traits are expressed in a random proportion.
e. Mental traits are expressed in a ratio of 9:3:3:1.
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A
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Which of these processes precedes fertilization?
a. oxidation
b. respiration
c. mitosis
d. meiosis
e. mutation
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D
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In a cell, the process of transcription
a. transfers DNA information from the nucleus to the rest of the cell.
b. uses RNA to carry genetic information.
c. relays instructions to regulate the cell chemistry.
d. all of the above
e. only two of the above
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D
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What is a codon?
a. the genetic code
b. a set of three bases on the mRNA
c. a set of three bases on the tRNA
d. an amino acid string
e. a protein
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B
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Where does protein synthesis in a cell actually take place?
a. tRNA
b. mRNA
c. nucleus
d. ribosome
e. codon
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D
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