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7th Cell Division
7th grade Cell Division, Reproduction and Protein Study Guide
| Question | Answer |
|---|---|
| Which Nitrogen base binds with cytosine? | Guanine |
| The last phase of meiosis is_____ | cytokinesis |
| Which organisms have rod-like chromosomes? | protists |
| The number of different types of chromosomes in the human species is ? | 23 |
| The two main stages of the cell cycle in a eukaryotic cell are interphase and ________. | mitotic phase |
| What kind of a cell is a diploid cell? | zygote |
| Types of mutagens include____________. | radiation, viruses and bacteria |
| Which type of RNA carries genetic information from the nucleus to a ribosome? | mRNA |
| The nitrogen base that is complementary to thymine is ? | adenine |
| Which phase follows metaphase ll? | anaphase ll |
| Compared with sexual reproduction, asexual reproduction. | is faster with less genetic variation |
| The two copies of a give chromosome in a diploid cell are called | homologous chromosomes |
| The last phase of mitosis is telophase | True |
| Meiosis l is just like mitosis. | False |
| Some mutations occur when errors are made in copying DNA. | True |
| DNA replication occurs only in eukaryotic cells. | False |
| Telophase is followed by cytokinesis. | True |
| A sea star can reproduce asexually by fragmentation | True |
| RNA is a double-stranded nucleic acid . | False |
| DNA replication occurs during the second phase of mitosis. | False |
| Uracil is a nitrogen base found only in RNA | True |
| Sexual reproduction is simpler than asexual reproduction. | False |
| Some organisms can produce both sexually and asexually | True |
| Sister chromatids line up at the center of a cell during metaphase. | True |
| Yeast cells can reproduce by budding. | True |
| The second phase of mitosis is called ____. | metaphase |
| During the stage called ____ a eukaryotic cell grows and prepares to divide. | interphase |
| Methods of _____ reproduction include fragmentation and binary fission. | asexual |
| The process in which proteins are made is called protein ___. | synthesis |
| The number of chromosomes in a normal human sperm cell is ___. | 23 |
| Reproduction that involves two parents is called _____. | sexual |
| A nucleotide consists of a sugar, a phosphate, and a nitrogen ___. | base |
| The type of cell division that results in four haploid cells is ____. | meiosis |
| ____ is the nucleic acid that helps make proteins. | RNA |
| The phase of the cell cycle in which the cytoplasm split apart and the cell pinches in two is called the ____. | cytokinesis |
| What are the steps of Mitosis and what is produced? | begins as one cell, consists of four stages, divides one time, two daughter cells are produced that each have 46 diploid chromosomes. Produces body cells |
| What are the steps of Meiosis and what is produced? | begins with one cell, consists of eight steps, divides two times, and produces four sex cells each with 23 haploid chromosomes. |
| Describe Transcription | takes place in the nucleus, a strand of DNA is copied to make a strand of mRNA |
| Describe Translation- | takes place in the cytoplasm, the genetic code in mRNA is read to make a protein |
| Crossing over | occurs during meiosis l when homologous chromosomes pair up and exchange bits of DNA. This recombines their genetic material. |
| Independent Assortment | Occurs when chromosomes go to opposite poles in the cell in anaphase l, which go to which pole is a matter of chance |
| Random Gametes | Which two gametes meet and fertilize are a matter of chance. |
Created by:
cromine