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Bio 102 - Quiz #1 Review - Leaderboard
Bio 102 - Quiz #1 Review - Details
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36 questions
| 🇬🇧 | 🇬🇧 |
| Each DNA nucleotide is composed of ____ | A five-carbon sugar, a phosphate group, and one of four nitrogenous bases |
| Which statement describes a difference between meiosis I and meiosis II? | Homologous chromosomes separate during meiosis I; sister chromatids separate during meiosis II. |
| Homologous chromosomes ____ | Contain a maternal and paternal chromosome |
| After the first meiotic division, the two daughter cells ____ | Have half the diploid number of chromosomes |
| How are purines distinguished from pyrimidines? | Purines are derived from a pair of fused C-N rings, while pyrimidines are derived from a single C-N ring. |
| Before anaphase II, the sister chromatids form a single chromosome; after anaphase II, each sister chromatid is an individual chromosome. | What is the difference between sister chromatids before and after anaphase II? |
| Adding nucleotides onto a growing DNA strand during DNA replication in cells occurs in ____ | The 5' → 3' direction only |
| The transforming principle described by Griffith in his work with Streptococcus pneumoniae is ____ | DNA |
| When Hershey and Chase labeled viruses with radioactive phosphorus, they concluded that the virus injects DNA and not protein into its host because ____ | Most of the radioactive DNA was inside the bacteria |
| Nondisjunction during meiosis I results in ____. | One pole of the cell receiving neither member of a homologous pair of chromosomes |
| Telophase | Mitotic spindle disassembles |
| Prophase | Duplicated chromosomes condense |
| Metaphase | Chromosomes align at the center of the cell |
| Anaphase | Sister chromatids are pulled to opposite spindle poles |
| Prophase | RNA synthesis shuts down |
| Telophase | Daughter chromosomes decondense and the nuclear envelope reforms |
| Prometaphase | Nuclear envelope disappears |
| Prophase (also) | Spindle fiber begins to form |
| Which statement describes a similarity between meiosis and mitosis? | DNA is replicated only once in both processes |
| The daughter cells produced by meiosis are ____ | Genetically different from the parent and each other |
| During which phase(s) of mitosis are chromosomes composed of two sister chromatids? | Prophase, prometaphase, and metaphase |
| Sexual reproduction has an advantage over asexual reproduction by ____ | Creating more genetic diversity |
| In their experiments to identify the transforming principle, Avery, MacLeod, and McCarty used enzymes that break down ____ | Protein, DNA, and RNA |
| What happens when living R strain Streptococcus pneumoniae bacteria are mixed with heat-killed S strain Streptococcus pneumoniae bacteria? | The R strain bacteria are transformed into S strain bacteria. |
| Hershey and Chase | Showed that the genetic material of bacteriophage T2 is DNA |
| Watson and Crick | Worked out the double helix model for DNA structure |
| Meselson and Stahl | Showed that DNA replication in Escherichia coli is semiconservative |
| Avery, MacLeod, and McCarty | Showed that DNA is the transforming principle responsible for transforming nonvirulent Streptococcus pneumoniae into a virulent strain |
| Griffith | Showed that a transforming principle from heat-killed S strain Streptococcus pneumoniae could be used to make the R strain virulent |