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Biology Exam
| Question | Answer |
|---|---|
| In eukaryotic cells, the timing of the cell cycle is regulated by, | cyclins |
| Which of the following is a correct statement about the events of the cell cycle? | Interphase consists of the G1, S, and G2 phases |
| Another name for cell division is | M Phase |
| If a normal cell divides, you can assume that | it has grown to its full size. |
| Cyclins are a family of closely related proteins that: | regulate the cell cycle |
| chromosomes pull apart | anaphase |
| chromosomes line up on equator | metaphase |
| uncontrolled mitosis | cancer |
| Egg or Sperm | Gamete |
| Naked | Gymno- |
| What is the role of the spindle during mitosis? | helps separate the chromosomes |
| One difference between cell division in plant cells and in animals cells is that plant cells have | a cell plate |
| the smaller a cell is, the more difficult it is for the cell to move enough materials across its cell membrane | False |
| the cell cycle is the | series of events that cells go through as they grow and divide |
| energy is released from ATP when | a phosphate group is removed |
| during which phase of mitosis do the chromosomes line up along the middle of the diving cell? | metaphase |
| as a cell becomes larger, its | volume increases faster than its surface area |
| cancer is a disorder in which some cells have lost the ability to control their | growth rate |
| first phase of mitosis | prophase |
| as a cell grows | has more demands on its DNA, has more trouble moving enough materials across its cell membrane uses up food and oxygen more quickly |
| Proper sequence of the phases of mitosis | prophase, metaphase, anaphase, telophase |
| happens when a cell divides | each daughter cell receives its own copy of the parent cell's DNA |
| which event occur during interphase? | the cell grows |
| a cell's chromosomes are duplicated during interphase | true |
| what are the reactants in the equation for cellular respiration? | glucose and oxygen |
| normal cells stop growing when they come in contact with other cells | true |
| once quilibrium is reached, roughly equal numbers of molecules move in either direction across a semi-permeable membrane and there is no further change in concentration on either side of the membrane | true |
| if carbon dioxide is removed from a plants environment, what would you expect to happen to its production of high-energy sugars? | fewer sugars will be produced |
| if a plant and a burning candle are placed under a bell jar, the candle will burn because the plant gives off carbon dioxide | False |
| when during the cell cycle are chromosomes visible? | only during cell division |
| when does DNA replicate? | S Phase |
| offspring that result from the crosses between true-breeding parents with different traits | hybrids |
| meiosis results in the formation of | haploid cells |
| photosynthesis uses the energy of sunlight to convert water and carbon dioxide into oxygen and ____ | glucose |
| Gamete are produced by the process of | meiosis |
| when alleles segregate from each other, they join. | false |
| if you made a Punnett square showing Mendel's cross between true-breeding tall plants with true breeding short plants, the square would show that | a genotype that was different from both parents |
| In many plants, the rate of photosynthesis ___ when the weather becomes very cold | decreases |
| living organisms require nitrogen to make ____ which are used to build protein | amino acids |
| a red blood cell placed in pure water will shrink | false |
| the diffusion of water across a selectively permeable membrane is called | osmosis |
| during DNA replication, only one strand of DNA serves as a template | False |
| what is produced during transcription? | RNA molecules |
| set of genes that orders the main structures of an organisms body | homeobox |
| DNA must be replicated so the next cell has a copy of it | true |
| alleles found close on a chromosome | gene linkage is taking place |
| The work of Fedrick Giffith, Why Microbes? | because they are helpful |
| Virulent Bacteria | Deadly (Dead Mice) |
| Nonvirulent Bacteria | Non Deadly (Live Mice) |
| Killed harmful bacteria | Injected in rat (Killed rat) |
| Virulent and Nonvirulent | turned the nonvirulent bacteria into virulent by transferring its DNA |
| chromatid | nucleoplasm |
| antiparralel | because we are making sister chromatids |
| growing cell divides | creates two "daughter" cells |
Created by:
nessarico18
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